RESEARCH PAPERS

microprocessor based motor




Microprocessor-based neural network controller of a stepper motor for a manipulator arm
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ABSTRACT The development and implementation of an FPGA neural network control system for motion control is a task that requires techniques and methods from several engineering fields. In this paper is presented the design of a microprocessor-based neural control 

Design and Analysis of Closed Loop Microprocessor Based Static Slip Energy Recovery Controlled Slip Ring Induction Motor Drive
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ABSTRACT In this paper the complete design and analysis of microprocessor based closed loop static slip energy recovery controlled slip ring induction motor drive is presented. The speed and current controllers are implemented using INTEL-8085 microprocessor. The 

A Real Time Microprocessor Based DC Motor Speed
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A microprocessor based speed controller for a separately excited armature controlled notor driven by antiparallel-connected dual thyristor converters has been developed. The prototype employs proportional plus integral co~ pensation in both the 

Microprocessor Based Single Phase Speed Control of Induction Motor Drive
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ABSTRACT The old mechanical drives and traditional drives were replaced with the electrical drives and the demand for the automated drives existed which lead to develop the electrical drives. The power drives are widely used in the industrial control applications. The various 

Microprocessor Based Controller For A Motor Car Park
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ABSTRACT This work involves the implementation of a microprocessor based motor car park management system. Embedded system design approach was adopted. Components were selected and interconnected according to their function. The system comprised of two 

DESIGN OF MICROPROCESSOR-BASED SPEED SERVOMECHANISM WITH AC MOTOR AND ELECTROMAGNETIC RESOLVER
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ABSTRACT This paper describes a novel procedure for optimal tuning of the speed controller parameters in the presence of a position sensor and an actuator performance limits. The proposed speed servo system is AC motor based and uses a resolver-type sensor for 

ultrasonic motor



Hybrid transducer type ultrasonic linear motor
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Hybrid transducer type ultrasonic motors have the advantage of freedom of design. A linear motor of this type consists of a longitudinal vibrator and multilayered piezoelectric actuators. The transducer is operated at the resonance frequency of the vibrator. In this paper, the

A digitally controlled drive system for travelling-wave ultrasonic motor
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Abstract A digitally controlled drive system was implemented in this study to control the speed and direction of a travelling-wave ultrasonic motor. The drive system, based on a 2- phase voltage-fed high-frequency serial-resonant inverter, uses the mechanical resonant

Development of a Bar-shaped Ultrasonic Motor for Multi-degrees of freedom Motion
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ABSTRACT Small and precise actuators that enable multi-degrees of freedom (multi-DOF) are required in order to construct dexterous robot arms and manipulators. However, the total system of general electromagnetic motors used to generate multi-DOF motion is usually

Efficiency improvement of an ultrasonic motor driven with rectangular waveform
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Ultrasonic motors have many advantages such as high torque, silent drive, quick response and no magnetic field generation, but their efficiency is not high enough compared with that of the electromagnetic motor. In order to improve the efficiency of the ultrasonic motor, we

Hybrid transducer type ultrasonic linear motor using flexural vibrator
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Reduction of the size and weight of a hybrid transducer type ultrasonic motor without increase of the resonance frequency was accomplished by using a flexural vibrator in place of a driving vibrator. The contact parts of the transducer were fabricated so that they

Precise position control of ultrasonic motor using fuzzy control with dead-zone compensation
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The ultrasonic motor has a heavy non-linearity and time-varying characteristics which vary with driving conditions. Besides, it possesses a variable dead-zone in the control input. These are problems for accurate actuator positioning in industrial applications. Therefore,

Systematic design of a disc type Traveling Wave Ultrasonic Motor
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ABSTRACT The objective of this project is to develop a systematic way in the design of disc- typed travelling wave ultrasonic motor based on the fundamental operating mechanism of piezoelectric disc. Four disc-typed prototypes were designed and fabricated. A test rig was

Ultrasonic motor
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During the last decade, ultrasonic motors developed into practical actuators in Japan. There are two major types of motors to convert high frequency vibrations into unidirectional motion using frictional force. They are the standing wave motor and the traveling wave motor. As

Design of a piezoelectric ultrasonic motor for microrobotic application, in '
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Abstract In a piezoelectric ultrasonic motor, exciting at least two orthogonal mechanical vibration modes of the composite stator using single or orthogonal multiple high frequency AC signals generates a mechanical vibration on the stator surface. The rotor is pressed

Numerical study of a hybrid transducer type ultrasonic motor
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We have proposed and successfully made a hybrid transducer type ultrasonic motor whose stator consists of multi-layered piezoelectric actuators and a torsional vibrator. 11]¦ í21 This type motor has an advantage of freedom for construction, and can be applied to of a

Position control of a small travelling wave ultrasonic motor
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Travelling wave piezo-electric actuators can produce high torque at low rotational speed. But because of the contact between stator and rotor, the torque on the shaft is not easy to impose: speed or position control are difficult to achieve, especially when a load torque is

Pre-loading Mechanism and Angular Positioning Control Algorithm for Multi-DOF Ultrasonic Motor with a Weight Load
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Abstract A multi-degree of freedom (multi-DOF) ultrasonic motor is anticipated as an actuator for the next generation because it can drive three-DOF motion with high torque and low noise. Before a multi-DOF ultrasonic motor can be used as a servomotor in actual robots,

A modified particle swarm optimization with nonlinear decreasing inertia weight based PID controller for ultrasonic motor
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Abstract:Ultrasonic motor (USM) exhibits non-linearity that relates the input and output. It also causes serious characteristic changes during operation. PID controller has been widely used as the control scheme for USM. However, it is difficult for the fixed-gain type PID

Variable gain type PID control using PSO for ultrasonic motor
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Abstract:Ultrasonic motor exhibits non-linearity that relates the input (Phase difference) and output (Velocity). It also causes serious characteristic changes during operation. PID control has been widely used as the design scheme for USM. However, it is difficult for the

Simulation of Ultrasonic Piezoelectric Motor
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Abstract--This paper presents the implementation of a mathematical model of the piezoelectric ultrasonic motor in the software Matlab/Simulink. This model describes the dynamic behavior of the traveling wave ultrasonic motor. To implement this model, a

Experimental Examination of Speed Control Methods for a Travelling Wave Ultrasonic Motor
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ABSTRACT In this study, speed control methods of a travelling wave ultrasonic motor are examined experimentally. A digital controlled drive system is developed to drive ultrasonic motor. The drive system is based on two-phase serial-resonant inverter which includes

Positioning control of a novel thin-disc ultrasonic motor using fuzzy sliding-mode control
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ABSTRACT The thin-disc piezoceramic-driving ultrasonic actuator dedicated to a stepping ultrasonic motor is proposed. The mechanical hysteresis and dead-zone phenomena are automatically compensated by a closed loop servo control, ie Fuzzy Sliding-Mode Control

Design of Linear Ultrasonic Micro Piezo Motor for Precision Mechatronic Systems
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Abstract: This paper presents a new design for a linear ultrasonic piezo motor for precision positioning developed by Physik Instrumente (PI). The stator of the ultrasonic motor consists of a rectangular piezoceramic plate. Two sliders, bonded to a spring which presses them

Non linear Positioning Compensator of a Novel Thin-Disc Ultrasonic Motor Using Fuzzy Sliding Mode Control
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Abstract: An approach of controller design based on fuzzy set and sliding-mode control theory for positioning purpose of a thin-disc edge-driving ultrasonic motor (USM) is developed in this study. A commercially available thin-disc buzzer used as a novel

Power Supplies for high-power piezoelectric multi-mass ultrasonic motor
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Abstract Due to the particular performances of piezoelectric ultrasonic motors compared to classical electromagnetic motor, such as high torque at low rotational speed and low inertia, they qualify for specific industrial applications. During the progress towards the" More

Miniaturization of non-contact ultrasonic motor using a thin metal disk
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Abstract A rotor in a non-contact ultrasonic motor is levitated and rotated via radiation pressure and acoustic viscous stress. The authors proposed a cylindrical non-contact high- speed ultrasonic motor some time ago, in which a hollow cylinder rotor is inserted into a

Development of a multi-degreeof-freedom ultrasonic motor using single mode vibrations
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Abstract This paper presents a novel type of ultrasonic motor that can generate a multi- degree-of-freedom (MDOF) movement based on a selection of reciprocating vibration modes. Ultrasonic motors driven by a single phase are more practical than those driven by

Design of a linear high precision ultrasonic piezoelectric motor
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Piezoelectric standing wave motors generate motion using a combination of flexural, torsional and/or longitudinal vibrations of a piezoelectric actuator. One of the vibration components produces a normal force, while the other vibration component generates

Configurations of an Ultrasonic Motor Using a Circular Vibration Disk with Three Longitudinal Transducers
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Abstract Vibration and load characteristics of an ultrasonic motor using a circular vibration disk with three longitudinal transducers are studied. Three bolt-clamped Langevin type longitudinal transducers of 20 mm diameter are installed along the circumference of the

A Low-Profile Micro Ultrasonic Motor utilizing Sector Shape Piezoelectric Vibrators
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This paper reports a fabrication process and evaluation of a low-profile micro ultrasonic motor. The actuator unit of this motor consisted of two sector shaped vibrators united with pre- load mechanism. The pre-load mechanism had a plated structure. The outer diameter and

Effects of anisotropy of friction material on properties of ultrasonic motor
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Abstract Three kinds of friction materials of USM with different fiber orientation were developed A experimental research was carried out on a simulated tester of USM. A simple contact model for describing the contact mechanics between stator and rotor of a traveling

Method for controlling multi-DOF ultrasonic motor using neural network
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A multi-DOF ultrasonic motor developed by the authors can generate multi-DOF rotation of a spherical rotor using three orthogonal natural vibrations of a bar-shaped stator. The ultrasonic motor is suitable for making small, lightweight and simple multi-DOF motion unit

Adaptive PSO-based self-tuning PID controller for ultrasonic motor
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Abstract. An adaptive particle swarm optimization based proportional-integral-derivative (APSO-PID) controller is proposed to control an ultrasonic motor (USM). Since the dynamic characteristic of the USM is difficult to obtain and the motor parameters are time varying,

Planar motor based on the principle of ultrasonic wave using pzt
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Recently manufacturing system is required to reduce producing cost and development time in response to sudden model change that demands reconfigurable factory. The micro factory has been studied to bring a solution to these requirements. The micro factory of size is so

Novel piezoelectric linear ultrasonic motor based on shaking beam
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Abstract Design of a piezoelectric actuator for the ultrasonic motor should ensure that the contact point has elliptic trajectory of movement.[1] A new idea of the elliptic trajectory formation of the piezoelectric actuator is investigated in the paper. Shaking beam for the

Dumbbell-shaped small-sized hybrid ultrasonic motor
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A dumbbel-shaped torsional vibrator is studied in the construction of a small hybrid transducer type ultrasonic motor whose stator consists of a Langevin type torsional vibrator and a longitudinal piezoelectric actuator. Two kinds of stators 20 mm in diameter are Abstract A thin, square, frame-type ultrasonic motor was proposed for applications in small actuators. The stator is easy to fabricate because of the simple structure where eight piezoelectric ceramics are attached on the thin square frame-shaped elastic body. When

An ultrasonic motor using bending cylindrical transducer based on pzt thin film
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ABSTRACT Ultrasonic motors have a distinguished performance of high torque. Especially, it seems that cylinder type ultrasonic motors are superior to disk or ring type ultrasonic motors in sense of high torque application. For miniaturization of a motor size, simple

MICRO–DRIVER FOR ULTRASONIC MOTOR BASED ON COMPLEX PROGRAMMABLE LOGICAL DEVICE
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First, the relation between the output voltage and energy efficiency of an ultrasonic motor driver and the duty cycle of the driving pulse is analyzed. The rationality of 37% duty cycle is proved in this paper. Then a mini-driver based on CPLD for ultrasonic motor is designed

Study On The Contact Model Of Ultrasonic Motor Considering Shearing Defomation
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The interface contact model between the stator and rotor of a travelling wave type ultrasonic motor is presented, assuming that the rigid stator contacts the flexible rotor over an area, and the frictional material is regarded as a distributed linear spring and without shearing

Generation of analytical redundancy relations for fault detection and isolation of ultrasoniclinear motor
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Abstract In this paper Bond Graph modeling, simulation and monitoring of ultrasonic linear motors are presented. Only the vibration of piezoelectric ceramics and stator will be taken into account. Contact problems between stator and rotor (slider) are not treated here. So,

A quantitative circuit model of the stator of piezoelectric ultrasonic motor
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933. Development of ultrasonic motor with a coil type stator and its application to vascular endoscope
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Abstract. IVUS (Intravascular Ultrasound) is a useful medical device to observe the thrombus in blood vessels, and such a micro motor less than 1.0 mm in outer diameter is desired to apply IVUS in narrow brain vessels. In our previous works, ultrasonic motor consisting of a

Ultrasonic evaluation of weak liner/Propellant bonding in a rocket motor
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AN Sinclair1, M. Jastrzebski1, and V. Safavi-Ardebili1 1 Department of Mechanical and Industrial Eng., University of Toronto, Canada Abstract: An attempt was made to develop an ultrasonic nondestructive evaluation technique for detection of poor interfacial bonding

Control of ultrasonic motor based on DSP
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ABSTRACT Considering the special working principle of USM (ultrasonic motor), we selected a drive voltage which was taken as the controlling variable to regulate its speed. In this paper, we improved the traditional PID control into incremental PID control. In order to

-shaped Ultrasonic Motor with Multi-Degree of Freedom
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Abstract:An ultrasonic motor with multi-degree of freedom motion was proposed and some motor characteristics were measured. Four multilayered piezoelectric actuators were used to construct the motor. Motor characteristics around the X-axis rotation and Y-axis rotation

Study on implementing of an ultrasonic motor in robotics
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Abstract:-This paper aims the studying, modeling and testing of models of linear motors which use ultrasonic waves to achieve the movement. The studied motors are characterized by the positioning accuracy, small inertia, wide speed control (does not require gears and

A new scheme for experimental based modelling of a travelling wave ultrasonic motor
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Abstract:In this paper, a new method for equivalent circuit modeling of a traveling wave ultrasonic motor is presented. The free stator of the motor is modeled by an equivalent circuit containing complex circuit elements. A systematic approach for identifying the elements of

Computer Simulation and Modelling of Standing Wave Piezoelectric Ultrasonic Motor Using a Single Flexural Vibration Ring Transducer
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ABSTRACT A rotary standing wave ultrasonic motor using single flexural ring transducer is developed and presented in this paper. The motor consists of three main components, the stator, rotor and housing unit. The stator is a piezoelectric transducer ring. The rotor is

Speed control of an ultrasonic motor considering the influence of temperature
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Since the industrialization of ultrasonic motors (USMs) by the Shinsei and Canon Company in the 80's, two decades had gone by and USMs are now widely used in various application fields, such as optical equipment, vehicles, robots, medical instruments, precision

Influence of piezoelectric hysteresis on the rotor speed characteristics in an ultrasonic motor
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Abstract: In this work a hysteretic dissipation in the ultrasonic motor is simulated by means of additional state variables (internal variables). The hysteretic model constructed has Masing- Bouc-Wen structure. It was demonstrated that hysteresis can lead to change for the worse

Forces Study and Control Approaches in the Ultrasonic Motor
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Abstract: This work presents an overview on ultrasonic motors of type traveling wave (TWUSMs). TWUSMs in our work are exposed, in first by their general structure; in second by their principle of function; in third by detailed studies on the various cases of the

Primary resonance of a disk-type stator for rotary traveling wave ultrasonic motor
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Abstract A nonlinear dynamic model of the stator with PZT (lead zirconate titanate) of a traveling wave ultrasonic motor is established considering the nonlinear constitutive relations of piezoelectric materials using the Hamilton's principle and the Rayleigh-Ritz

Online analysis of the ultrasonic Doppler signals of the fetal motor activity in the LabVIEW environment
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Fetal motor activity and the fetal heart rate are important indicators of fetal well-being. The motor activity consists of pseudobreathing movements. trunk and limb movements. These movements can be detected using the ultrasonic Doppler method. The software

A Low Mass Translation Mechanism for Planetary FTIR Spectrometry Using an UltrasonicPiezo Linear Motor
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Abstract One of the key components of a Fourier Transform Infrared Spectrometer (FTIR) is the linear translation stage used to vary the optical path length between the two arms of the interferometer. This translation mechanism must produce extremely constant velocity

Control of a Simple DC Motor Robot Equipped with Ultrasonic Sensors Via a Field Programmable Gate Array and a Speech Recognition Board and Microphone
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Abstract: This paper documents a feasibility study showing the initial development into building a practical robotic speech controlled system; this can be used to assist people with disabilities, gaining more of their independence back. Speech recognition is a very useful,

Tribological Approach for Reliability and Durability of Ultrasonic Motor
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Abstract The reliability and durability of an ultrasonic motor is usually determined by wear at the contact interface between a drive and a driven element, due to its driving mechanism. Wear control is therefore essential as the key design input to achieve ultimate

A Piezo-on-Slider Type Linear Ultrasonic Motor for theApplication of Positioning Stages
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Abstract: In this paper, a pie-m-on-slider type linear ultrasonic motor (USM) for the application of positioning stages was described. The positioning stage driven by the piezo- on-slider type tinear USM has a very simple and compact structure, which consists of a

Differential Gear Transmission for Low-speed Drive of Ultrasonic Motor
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Abstract: We have studied a differential gear transmission for low-speed drive of ultrasonic motor. This transmission outputs the half of the difference of two ultrasonic motors. Therefore when both motors rotate at approximately similar speed in the counter direction, the

Load Characteristics of a Diagonally Symmetric Form Ultrasonic Motor Using a LiNbO3 Plate
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The authors study on the high-speed rotational ultrasonic motor using LiNbO3 1, 2) single crystal which is the Pb-free piezo-electric material and has better vibrational velocity dependence over the wide vibrational velocity range 3, 4). Especially in performing the

Design and Simulation of Piezoelectric Ultrasonic Micro Motor
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Abstract: Micro machined motors are a recent development in the domain of electrical machines. As compared to conventional electromagnetic motors, micro machined motors offer higher torque at lower speeds, and are they are compact in size. This paper focusses

Precise Positioning System Use of a Hybrid Transducer Type Ultrasonic Motor
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This paper presents a precise angular positioning system using a hybrid transducer type ultrasonic motor. In addition to the operation as an ultrasonic motor, the hybrid transducer acts as a very precise angular actuator if we apply a DC voltage to the torsional part.

ONE DEGREE OF FREEDOM ULTRASONIC MOTOR
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Abstract: The article presents the authors research in the field of the ultrasonic motors, especially of the rotary ultrasonic motors. The basics of the analytic calculations, the vibration movement simulation of the active piezoceramic element and the constructive

An Ultrasonic Motor Driver Using a Resonant Booster
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According to the capacitive characteristic of the ultrasonic motor, a non-transformer driver scheme for ultrasonic motor using LC resonant is proposed in this paper. The circuit is theoretically analyzed and verified by simulation. The relationships of the amplitudes and

TORQUE CHARACTERISTICS ANALYSIS FOR TRAVELLING WAVE ULTRASONIC MOTOR
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Abstract- This paper presents a set of results regarding the torque of travelling wave ultrasonic motor. It is known the fact that at this type of motor there are a set of phenomena which requires some advanced investigations. The analysis of torque characteristics

DEVELOPMENT AND CONTROL OF XY STAGE WITH A HYBRID BOLT CLAMPED LANGEVIN TYPE ULTRASONIC MOTOR
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ABSTRACT The development and control of XY stage driven by ultrasonic linear motor is presented. In this paper, the stage is driven by the hybrid-bolt clamped Langevin-type (Hybrid BLT) ultrasonic motor which consists of a longitudinal and a lateral PZT. The

New construction of loudspeaker for low frequency range by rotational type ultrasonic motor
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ABSTRACT This work gives a new loudspeaker construction which is completely different from the conventional electrodynamic loudspeakers. Direct-radiator-loudspeaker is required a large diaphragm displacement and low resonant frequency for satisfactory performance

Method for Controlling a Multi-DOF Ultrasonic Motor using a Sigmoid Function
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ABSTRACT A multi-degrees-of-freedom (DOF) ultrasonic motor developed by the authors generates rotations of a spherical rotor around three perpendicular axes using three natural vibrations of a bar-shaped stator. A method is proposed for controlling the multi-DOF

Rotary Ultrasonic Motors: Daimler-Benz AWM 90–X TWUSM motor, Experimental and Simulation mechanical characteristics
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Abstract--Rotary ultrasonic motors have now been investigated for several years. Their key features are high thrust forces related to their volume and good positionaccuracy. This study is consisted by two main parts. In the first we describe of the development of the structure

Effects on Normal Force and Input Voltage Variation in the ResonanceCharacteristics of anUltrasonic Motor
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ABSTRACT In an ultrasonic motor, a piezoelectric ceramic material forms the active element which vibrates the stator, thus initiating the rotational motion. In the operation of ultrasonic motors, many factors exist that can affect the resonance characteristics of the piezoelectric

Development of Spherical Ultrasonic Motor for Critical Environment
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Abstract. In recent years, due to advances in science technology, space satellites have made progress. So, the presence of space debris has become problem in the world because they may collide each other. In our study, we have developed Spherical Ultrasonic Motor (

Driving Characteristics of Hexadecagon Shaped Ultrasonic Motor
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Abstract: Novel hexadecagon shaped ultrasonic motor was proposed. It is easy to fabricate the stator because of the simple structure of the stator. Stator of the hexadecagon ultrasonic motor is composed of an elastic ring and ceramics. The elastic ring has sixteen sides and

Study of a Hollow Ultrasonic Rotary Motor
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Abstract:In this study, a hollow cylinder ultrasonic motor has been designed in order to be integrated into mechatronic devices where the bore is either occupied for functional reasons or must remain free. The design approach consists in performing a FE modelling of the

THE CONTACT MECHANISM OF AN ULTRASONIC MOTOR
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Abstract-This paper presents a new method to clarify the mechanical characteristics of an Ultrasonic Motor. We calculate the vibration mode of a stator by using the Finite Element Method (FEM, MSC/NASTRAN). The shape of the elliptic motion at the surface point of

THE EQUIVALENT CIRCUIT AND CONTROL SYSTEM OF TRAVELLING WAVE TYPEULTRASONIC MOTOR
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Abstract The ultrasonic motor is a sort of new type of micromotor with special structure. By use of piezoelectric converse effect of ceramics, the electrical energy is transformed into mechanical energy. Its operating principle is quite different from that of the traditional

An Ultrasonic Motor Precision Adjustable Speed Scheme Study and Analysis
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(1. Northeastern University Advanced manufacturing and automation Institute of Technology, Shenyang, China 110819 2. Shenyang Vocational and Technical College Department of Electrical Engineering, Shenyang, China 110045) amfchen111@sina.com bpzou425@163.com

Supervisory Genetic Algorithm Control for Linear Ultrasonic Motor Drive
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Abstract This study presents a supervisory genetic algorithm (SGA) control system for a linear ultrasonic motor (LUSM) driven by a two-inductance two-capacitance (LLCC) resonant driving circuit. First, the motor configuration and driving circuit of an LUSM are

FINITE ELEMENT MODELLING OF AN ULTRASONIC ROTARY MOTOR.
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Abstract. This paper tackles the use of ultrasonic motors with three degrees of freedom in view of various applications. In nanotechnology, due to their high precision values, fast speeds and response, the piezo positioning systems have become a key component in

Traveling Wave Ultrasonic Motor Type Daimler-Benz AWM90–X: Modeling and Simulation Mechanical Characteristics
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Abstract--During the last decade, many modeling methods, concerning TWUM, have been proposed to optimize their operational performance such as output speed, torque, power, and efficiency. In this work an analytical modeling is proposed and detailed. The study

Numerical Analyses on Multi-DOF Ultrasonic Motor
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Abstract:A multi-DOF ultrasonic motor developed in our previous study has significant potentials for dexterous actuation. The ultrasonic motor provides multi-DOF rotation of a spherical rotor using three natural vibrations of a bar-shaped stator. In this paper,

STUDY ON THE DRIVING MODEL OF ULTRASONIC MOTOR
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ABSTRACT The interface contact model between the stator and the rotor of traveling wave ultrasonic motor is presented, assuming that the rigid stator contacts the flexible rotor over an area, and the frictional material is regarded as distributed linear spring and without

Characteristics of screw-shaped ultrasonic motor that incorporates three transducers
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ABSTRACT We devised a screw-shaped ultrasonic motor that incorporates three separate transducers. Three bolt-clamped Langevin-type longitudinal vibration transducers (BLTs) were installed in the shape of a screw in order to generate torque. It is difficult for practical

Ultrasonic motor using surface acoustic wave device
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ABSTRACT We have proposed HF band (3-30 MHz) and higher frequency surface acoustic wave motors and demonstrated its possibility. With a stator transducer of 15x60x1 mm3 operating at 9.6 MHz, noload speed of 1 m/s and maximum output force of 10 N were

Characteristics of Hybrid Ultrasonic Rotary Motor
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This paper proposes a hybrid type ultrasonic motor, in which the driving force is generated by a torsional vibrator and timing of contact is controlled by a multilayered piezoelectric actuator. A rotary motor of 20mm in diameter is made for trial, and its characteristics are

Modal analysis of a stator of Double Rotor Traveling Wave Rotary Ultrasonic Motor(DTRUM)(Single Degree of Freedom)
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ABSTRACT: This paper outlined the modal analysis of a Double Rotor Bar-type Rotary Traveling Wave Ultrasonic Motor (DBTRUM) with single degree of freedom (SDOF). The first bending vibration mode generated from the inverse piezoelectric effect produces traveling

SELF-TUNING FUZZY SPEED CONTROLLER OF TRAVELLING WAVE ULTRASONIC MOTOR
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Abstract-Aiming at the nonlinear characteristic of ultrasonic motor, some control strategies have been proposed to control the rotating speed of ultrasonic motor. But most of these strategies are too complex to realize using a low-cost embedded device. In this paper, a

A new loudspeaker for low frequency radiation by linear motion type ultrasonic motor
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ABSTRACT This work gives a new loudspeaker construction which is completely different from the conventional electrodynamic loudspeakers. Direct-radiator-loudspeaker is required a large diaphragm displacement and low resonant frequency for satisfactory performance

A linear ultrasonic motor for positioning stages
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Abstract: In this paper, a linear ultrasonic motor for the positioning of stages was described. The positioning stage driven by the linear ultrasonic motor has a very simple and compact structure, which consists of a linear guide and the linear ultrasonic motor. The linear

Numerical Simulation of Properties of Longitudinal and Torsional Hybrid Ultrasonic Motor
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Abstract Based on a new time domain driving model of longitudinal and torsional hybrid ultrasonic motor (TLHUSM), the input parameters' effects on the ultrasonic motor's performance are calculated numerically. Those parameters are static pre-load, stator's

ANALYSIS AND APPLICATION A 3 DOF LINEAR ULTRASONIC MOTOR
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Abstract The paper deals with the study and the use of a piezoelectric linear ultrasonic motor (USM) at low voltages. Standing waves generated in a 64 x 38 x 3 mm3 resonator are converted by the friction of four legs with a glass worktop into rigid body displacements:

Design of a Plate Type Multi-DOF Ultrasonic Motor and its Driving Characteristics
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Abstract Multi-DOF actuators have become more useful in the field of robotics, thanks to the increasing number ofDOFs of systems. General features of ultrasonic motor are suitable for constructing a direct-drive multi-DOF actuator. However, those previously developed do Abstract--This paper presents a specially-designed new prototype of an application-specific traveling-wave type ultrasonic motor (USM) for driving the small type ball valve and its new control scheme developed for a precise direct drive position servo motion. A feasibility-

THERMAL CONDITIONS FOR USR30-S3 TRAVELLING WAVE ULTRASONIC MOTOR
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Abstract-This paper presents a study about thermal conditions for USR30-S3 traveling-wave ultrasonic motor (TWUM). It is known that the largest problem in ultrasonic motors is heat generation and causes a serious degradation of the motor characteristics. The author has

Numerical modelling and analysis of high frequency dynamic contact in the hybrid transducer type ultrasonic motor
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A standing wave hybrid transducer type ultrasonic motor is one of the intermittent contact type piezoelectric ultrasonic motors which has been first proposed in the 1980s. Due to its excellent properties such as large output torque and high efficiency, this motor is attractive

Finite Element Analysis of a Flexure Based Ultrasonic motor.
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Abstract: The ineluctable change to micro and subsequently nano has engendered the need for precision control and actuation. With Piezoelectric technology at the heart, a new type of motor is improving small-scale motion systems in a big way. In the following study a novel

Regular paper Rotary Ultrasonic Motors: Daimler-Benz AWM 90–X TWUSM motor, Experimental and Simulation mechanical characteristics
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Rotary ultrasonic motors have now been investigated for several years. Their key features are high thrust forces related to their volume and good position-accuracy. This study is consisted by two main parts. In the first we describe the development of the structure and

Design of Feedforward Compensator for the Travelling Wave Ultrasonic Motor Based on Non-uniform Rational B-splines Curve Neural Network
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Abstract: In this study, a novel feedforward compensator which is based on the non-uniform rational B-splines (NURBS) curve neural network (NURBSCNN), is developed for the travelling wave ultrasonic motor (TWUSM). The proposed NURBSCNN consists of three

Adaptive-fuzzy-identification-based sliding-mode control for linear ultrasonic motor
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Abstract:-An adaptive-fuzzy-identification-based sliding-mode control (AFISMC) design method is proposed to control an Linear Ultrasonic Motor (LUSM). Since the dynamic characteristic of the LUSM is difficult to obtain and the motor parameters are time varying,

Measurement of Attitude Angles of Single Stator Multi-Degrees of Freedom Ultrasonic Motor
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ABSTRACT In order to measure the attitude angles of our ultrasonic motor, a compact single stator multi-degree-of freedom (DOF) ultrasonic motor with a cylindrical stator and a spherical rotor is designed with one OEM encoder and 2D PSD (Position Sensitive

Novel ultrasonic motor using torsional/longitudinal vibration
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Abstract:Longitudinal-torsional mode converters have greatly simplified the structure of ultrasonic motors using a combined torsional/longitudinal vibration, making miniaturization more practical. A previous design of this type of motor used a multilayer piezoelectric

PERIODIC DISTURBANCE ATTENUATION FOR A SPEED CONTROL SYSTEM OF ULTRASONIC MOTOR VIA DELAY-INVOLVED WEIGHTING FUNCTIONS
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A rotary type ultrasonic motor (USM) is composed of a stator and rotor1). It is driven by vibration of stator and frictional force between stator and rotor. USM has a remarkable advantage of quiet operation characteristic because it does not need gear transmissions.

A Positioning Control System for Ultrasonic Motor Based on LabVIEW
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Abstract Aiming at the present control system of ultrasonic motor (USM), which has the disadvantages such as simple systemic functions, complicated circuits and high price, a positioning control system for ultrasonic motor based on LabVIEW was developed. The

Numerical and Experimental Study of Piezoelectric Ultrasonic Linear Motor Using Surface Acoustic Waves
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Abstract This paper presents the results of numerical analysis and experiment on Ultrasonic Linear Motor (ULM). For estimation of behavior of ultrasonic linear motor, analytic method was used. Numerical analysis was conducted for precise characteristics of ultrasonic

Robust Control of Ultrasonic Motor Operating under Severe Operating Conditions
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Abstract Ultrasonic motor technology is a key system component in integrated mechatronics devices working on extreme operating conditions subjected to thermal cyclings or large thermal variations, EM disturbances, radiations, corrosion, or strong vibrations. Due to

Controlled Ultrasonic Motor for Servo-Drive Applications
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Abstract. This paper deals with an advanced speed control scheme for inverter-fed travelling wave ultrasonic motors. It is implemented as an additional outer control loop of an underlaid voltage and travelling bending wave vector controller and verified by measurements on a

Dynamic Analysis of a Piezoelectric Ultrasonic Motor
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This thesis describes the work I have done at Mapper Lithography BV in Delft, as a final project for my masters Precision and Microsystems Engineering at Delft University of Technology, faculty 3mE. This project is part of the process of designing a high-precision

Bond Graph Modelling for Fault Detection and Isolation of an Ultrasonic Linear Motor
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Abstract In this paper Bond Graph modeling, simulation and monitoring of ultrasonic linear motors are presented. Only the vibration of piezoelectric ceramics and stator will be taken into account. Contact problems between stator and rotor are not treated here. So, standing

Analysis and Design of a Small Size Rotary Ultrasonic Motor
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Abstract:-Up to the present time, the analysis and design of the USM have been almost always performed using rough analytic methods or using commercial analysis tools or using the trial and error method without considering the USM's contact mechanisms. As a result, Abstract:This paper deals with the control and experimentation of a one-degreeof-freedom haptic stick, actuated by a travelling wave ultrasonic motor. This type of actuator has many interesting properties such as low-speed operation capabilities and a high torque-to-

Ultrasonic semiotics of peripheral nerves in multifocal motor neuropathy and amyotrophic lateral sclerosis (short reports)
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The results of ultrasonography in patients with multifocal motor neuropathy (10 patients), and 4 patients with amyotrophic lateral sclerosis. Differences are reflected ultrasound signs of 2 groups: the presence of mosaic segmental asymmetric structural changes in patients

Research of Double Mode Ultrasonic Testing in Multi-layered Adhesive Structure of the Solid Rocket Motor
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Abstract In inspecting steel-rubber multi-layered structure, shielding of steel layer and intense attenuation of rubber layer result in ultrasonic echo from the interfaces of the deep layers being very weak. In order to overcome the difficulty, the double mode testing Abstract An open-looped ultrasonic stepping motor with self-correction function was studied theoretically. In order to analyse the mechanism for the motor's function, A linear ultrasonic self-correcting stepping motor is designed, and the dynamics of the motor was studied. For

ULTRASONIC TREATMENT OF WASTE MOTOR OIL
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Abstract Motor oil is used as lubricant for internal combustion engines. This is important as it helps to decrease the heat caused by friction and reducing wear in the engine. However, it needs to be replaced at certain time. The waste motor oil becomes the major concern

PIEZOELECTRIC ULTRASONIC MICRO MOTOR OPTIMIZATION
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ABSTRACT In understanding the gearless design of piezoelectric actuators, the uses of piezoelectric materials applied in ultrasonic micro-motors are investigated. The converse piezoelectric effect, in which an applied electric field on a piezoelectric ceramic causes a


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