Finite-element analysis of the rotor/stator contact in a ring-type ultrasonic motor

Maéno, Takashi; Tsukimoto, T.; Miyake, Akira

doi:10.1109/58.165549

Cited by 151 publications

(70 citation statements)

References 4 publications

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“…Indeed, modeling of contact mechanics and control of piezoelectric motors to clarify the nature of the operating principal and to optimize performance has always been an important study area in the field of piezoelectric motors [78][79][80][81][82][83][84][85][86][87].…”

Section: Discussionmentioning

confidence: 99%

Piezoelectric Motors, an Overview

Spanner

Koç

2016

Actuators

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Piezoelectric motors are used in many industrial and commercial applications. Various piezoelectric motors are available in the market. All of the piezoelectric motors use the inverse piezoelectric effect, where microscopically small oscillatory motions are converted into continuous or stepping rotary or linear motions. Methods of obtaining long moving distance have various drive and functional principles that make these motors categorized into three groups: resonance-drive (piezoelectric ultrasonic motors), inertia-drive, and piezo-walk-drive. In this review, a comprehensive summary of piezoelectric motors, with their classification from initial idea to recent progress, is presented. This review also includes some of the industrial and commercial applications of piezoelectric motors that are presently available in the market as actuators.

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Section: Discussionmentioning

confidence: 99%

Piezoelectric Motors, an Overview

Spanner

Koç

2016

Actuators

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“…Important contributions are the equivalent circuit model [4], finite element approaches [6] or the analytical model incorporating the stator-rotor interface forces and predicting the resulting motor performance as a function of design parameters [7].…”

Section: B Modelingmentioning

confidence: 99%

Sensorless Speed Control of Traveling Wave Ultrasonic Motor

Flueckiger

Bullo

Perriard

2006

Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting

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Abstract-Ultrasonic motors are a good alternative to electromagnetic motors in medical robotics, since they are electromagnetically compatible. Estimating speed instead of using encoders reduces cost and dimension of the robot on the one hand and increases reliability on the other hand. However, no sensorless speed controller is yet industrialized. Analytical models of the traveling wave ultrasonic motor being too complex to be exploited for sensorless control purpose, we suggest speed estimation based on artificial neural networks. The artificial neural network is designed based on a sensitivity analysis using design of experiments methods. Factorial designs have been chosen to find out the effects of each input factor, but also the effect of their interactions. First results show that speed estimation using artificial neural networks is a promising approach. The artificial neural network optimized with design of experiments methods is a valid model of the traveling wave ultrasonic motor to estimate speed.

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“…On the other hand, the translational, coupling and rotary inertia I 0 , I 1 and I 2 , respectively, can be expressed as: (14) In this case, even if the Poisson ratios of the materials are different the coupling inertia I 1 becomes null when the reference plane is chosen at: (15) …”

Section: Mechanical Coupling In Laminated Platesmentioning

confidence: 99%

“…With regard to TWUMs, an important body of knowledge has been achieved on the modelling of the stator dynamics [2,4,5,6,7,8,9,10,11,12], and contact mechanics between stator and rotor [13,14,15,16,17,18,19]. The latter problem is concerned with the frictional transmission of motion and energy at the contact layer, which is in itself a too wide and complicated topic to be reviewed here.…”

Section: Introductionmentioning

confidence: 99%

Modelización del estator de un motor piezoeléctrico de onda viajera: una revision integrada y nueva perspectiva

Rodríguez¹,

Ceres²,

Calderón³

et al. 2004

Bol. Soc. Esp. Ceram. Vidr.

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Articles from different areas which are closely related to the modelling of the stator of travelling wave ultrasonic motors (TWUMs) are reviewed in this work. Thus, important issues relevant to this problem are identified from the areas of vibration of annular plates, laminated plate theories, and modelling of piezoelectric transducers. From this integrated point of view, it becomes clear that there are some very important issues yet to be addressed in the modelling of TWUMs. Firstly, the influence of material properties and stator dimensions on output efficiency, electromechanical coupling coefficients (EMCC) and maximum output energy is to be investigated in more detail. Secondly, the modelling of the electric potential field (by explicitly including the charge equation) for TWUMs seems to be a must for better prediction of displacements and electric fields close to the resonance, as suggested by some recent works [1]. Moreover, the improvement of current models by using shear deformation (or higher order) laminated plate theories (LPTs) in conjunction with approximated methods of solution are discussed. In addition to analytical models, those works using Finite Element and Finite difference Methods (FEM and FDM) for the modelling and simulation of the TWUM stator dynamics are reviewed. Keywords: analytical model, piezoelectric motor, resonant actuation Modelización del estator de un motor piezoeléctrico de onda viajera: una revision integrada y nueva perspectivaEn este trabajo se realiza una revisión de los trabajos de investigación realizados en diversas áreas sobre el modelado del estátor de los motores ultrasónicos de onda viajera (TWUMs). Entre los problemas relevantes que se han estudiado podemos citar la vibración de placas anulares, las teorías de placas laminadas y el modelado de transductores piezoeléctricos. A raíz de este punto de vista integral se hace manifiesto que todavía quedan asuntos importantes que estudiar en el modelado de los TWUMs. En primer lugar, la influencia de las propiedades del material y las dimensiones del estátor en la eficiencia del motor, los coeficientes de acoplamiento electromecánico (EMCC) y la máxima energía entregada deberían ser estudiados más detenidamente. En segundo lugar, el modelado de la distribución del campo eléctrico en los TWUMs (incluyendo la ecuación de carga explícitamente) parece imprescindible para lograr una predicción mejor del desplazamiento y del campo eléctrico cerca de la resonancia, como se ha apuntado en referencias actuales [1]. Además, se discute las mejoras que incorporaría a los modelos existentes en la actualidad la inclusión de las teorías de placas laminadas (LPTs) con deformaciones de corte (o de orden superior), resueltas mediante métodos aproximados. Como complemento a los modelos analíticos, se realiza asimismo una revisión de las técnicas de elementos finitos (FEM) y diferencias finitas (FDM) empleadas en la simulación de la dinámica del estátor de los motores TWUM.

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Finite-element analysis of the rotor/stator contact in a ring-type ultrasonic motor

Cited by 151 publications

References 4 publications

Piezoelectric Motors, an Overview

Piezoelectric Motors, an Overview

Sensorless Speed Control of Traveling Wave Ultrasonic Motor

Modelización del estator de un motor piezoeléctrico de onda viajera: una revision integrada y nueva perspectiva

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