The effect of tangential elasticity of the contact layer between stator and rotor in travelling wave ultrasonic motors

Storck, Heiner; Wallaschek, Jörg

doi:10.1016/s0020-7462(01)00048-8

Cited by 66 publications

(48 citation statements)

References 11 publications

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“…Based on Kirchhoff's plate theory, the neutral plane of the stator can be expressed in terms of an ideal traveling wave as (2) while assuming that the stator is not affected by the contact force [1][2][3]11]. Here, r is the position in the radial direction, R(r) is the amplitude at radius r, and n is the number of nodal lines.…”

Section: Formula For the Motion Of A Statormentioning

confidence: 99%

“…The nonlinearity of the contact mechanism of the TWUSM has been made it difficult to propose an effective characteristic analysis method [1][2][3][4][5][6]. Hence, many researchers have investigated the contact mechanisms of TWUSMs over the past few decades.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, many researchers have investigated the contact mechanisms of TWUSMs over the past few decades. Numerous types of characteristic analysis methods using diverse kinds of contact models have been proposed for the TWUSM by many researchers [2,[7][8][9][10][11][12][13]. However, some of the proposed methods have to use the unreasonable values of material coefficients or inconsistent material coefficients to fit the calculated data to the simulated results.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characteristic Analysis of an Traveling Wave Ultrasonic Motor using a Cylindrical Dynamic Contact Model

Ro¹,

Yi²,

Chung³

et al. 2013

Journal of Electrical Engineering and Technology

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-The traveling wave ultra-sonic motor (TWUSM) is operated through the frictional force between the rotor and the stator. Hence, the contact mechanism should be analyzed to estimate the motor performance. However, the nonlinearity of the contact mechanism of the TWUSM makes it difficult to propose a proper contact model and a characteristic analysis method. To address these problems, a novel contact model is proposed and be termed the cylindrical dynamic contact model (CDCM) in this research. An estimation method of the motor performance is proposed using the CDCM, an analytical method, and a numerical method. The feasibility and usefulness of the proposed characteristic analysis are verified through experimental data.

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Section: Formula For the Motion Of A Statormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characteristic Analysis of an Traveling Wave Ultrasonic Motor using a Cylindrical Dynamic Contact Model

Ro¹,

Yi²,

Chung³

et al. 2013

Journal of Electrical Engineering and Technology

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show abstract

“…Each pattern provides standing wave individually. The superposition of these standing waves produce a travelling-wave used in TWUSMs [4,15].…”

Section: Travelling-wave Ultrasonic Motormentioning

confidence: 99%

“…In a second step the oscillations are converted to continuous linear or rotary motion by friction forces generated in the contact interface of the vibrating member and a second body which is pressed against the oscillator. Usually the vibrating part is stator and the second part is rotor [4].…”

Section: Introductionmentioning

confidence: 99%

Microcontroller based digitally controlled ultrasonic motor drive system

et al. 2007

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Piezoelectric driven ultrasonic motors have been attracted as considerable actuators for the servo speed and position applications in recent years. These motors have important features and advantages to be preferred in the special movement applications. Ultrasonic motors have different operating principles and different drive and control systems than the electromagnetic motors. In this study, microcontroller based digitally controlled drive system has been proposed for a travelling-wave ultrasonic motor. Drive system includes power circuit, interface electronics circuits and microcontroller parts. Power circuit is combined from half-bridge serial-resonance inverter to provide highfrequency two-phase voltages. Interface circuits include gate drive, direction control, opto-coupler and filter circuits. Microcontroller is programmed to generate required digital control signals for overall control of the motor. Related to the reference speed, the microcontroller generates control signal resulting proper driving frequency. Consequently, the actual motor speed tracks the reference speed precisely. The speed feedback is taken from optical encoder and transmitted to the controller as digital speed and position signals.The developed drive system has been tested experimentally. The obtained results show the effectiveness and reliability of the proposed system. The microcontroller based drive system can be applied easily and successfully to the ultrasonic motor.

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Computer Algebra for the Formation of Structural Matrices of Piezoceramic Finite Elements

Čepulkauskas

Kulvietienė

Kulvietis

2006

Computational Science – ICCS 2006

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This paper deals with the description of a theoretical background of systematic computer algebra methods for the formation of structural matrices of piezoceramic finite elements. The efficiency of computer algebra application was compared here with the numerical integration methods of forming the structural matrices of the finite elements. To this end, the computer algebra system VIBRAN was used. Two popular finite elements for modelling piezoceramic actuators of the sector-type and the triangular one are discussed. All structural matrices of the elements were derived, using the computer algebra technique with the following automatic program code generation.

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The effect of tangential elasticity of the contact layer between stator and rotor in travelling wave ultrasonic motors

Cited by 66 publications

References 11 publications

Characteristic Analysis of an Traveling Wave Ultrasonic Motor using a Cylindrical Dynamic Contact Model

Characteristic Analysis of an Traveling Wave Ultrasonic Motor using a Cylindrical Dynamic Contact Model

Microcontroller based digitally controlled ultrasonic motor drive system

Computer Algebra for the Formation of Structural Matrices of Piezoceramic Finite Elements

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