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2012全国压电和声波理论及器件技术研讨会

作者： Ying-xiang LIU Wei-shan CHEN Di LU Xiao-hui YANG Yu YAO State Key Laboratory of Robotics and System Harbin Institute of Technology School of Astronautics Harbin Institute of Technology

A linear ultrasonic motor using longitudinal vibration transducers with single foot was proposed,designed,fabricated and tested in a previous *** longitudinal vibrations of two orthogonal bolt-clamped transducers are superimposed to produce eUiptical movements on the driving ***,the operating principle of the proposed motor is *** longitudinal and bending vibrations of the transducers are gained by modal ***,the resonance frequencies and input impendence characteristics of the individual transducers and the motor are calculated respectively to gain the effect from the vibration *** study results state that the vibration coupling between the transducers make thenlongitudinal resonance frequencies have small increases and the electromechanical coupling factor of the vertical transducer has an obvious decrease after it is linked with the horizontal *** last,the coupling bending vibrations of the transducers are tested by using a scanning laser Doppler vibrometer.

关键词： Ultrasonic motor longitudinal transducer Vibration coupling Input impendence

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Actuating mechanism and design of a T-type linear ultrasonic motor

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Journal of Harbin Institute of Technology(New Series) 2011年第2期18卷 43-46页

作者：刘英想刘军考陈维山石胜君 State Key Laboratory of Robotics and System Harbin Institute of Technology

To take advantage of merits of higher output-power and efficiency of bolt-clamped transducer,a T-type linear ultrasonic motor was proposed in this *** proposed motor contained a horizontal transducer and a vertical *** horizontal transducer included two exponential shape horns,and the vertical transducer contained one exponential shape *** the horns intersected at tip ends where a driving foot was *** longitudinal vibrations of transducers were excited by the stretching vibration of PZT *** vibrations were superimposed in the motor and generated elliptical trajectory at the driving *** actuating mechanism of the proposed motor was *** two working modals of the motor were gained with *** resonant frequencies of two working modals were degenerated by adjusting the structural *** motion trajectory of nodes on the driving foot was gained by transient *** vibration amplitude of node on the driving foot indicates that the proposed motor has potential good output *** results verify the feasibility of the proposed design and provide instructions for the development of the new ultrasonic motor.

关键词： ultrasonic motor linear T-type longitudinal transducer FEM

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DESIGN AND ANALYSIS OF A CYLINDRICAL STANDING WAVE ULTRASONIC MOTOR USING CANTILEVER AND SANDWICH TYPE transducerS

DESIGN AND ANALYSIS OF A CYLINDRICAL STANDING WAVE ULTRASONI...

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第三届全国压电和声波理论及器件技术研讨会

作者： Ying-xiang LIU,Wei-shan CHEN,Jun-kao LIU,Sheng-jun SHI State Key Laboratory of Robotics and System,Harbin Institute of Technology, 92 West Dazhi Street,Harbin,Heilongjiang Province,China

A cylindrical standing wave ultrasonic motor using cantilever and sandwich type transducers was proposed in this paper. There are four pairs of cantilevers outside the cylindrical stator,and four PZT ceramics are set between each pair of *** PZT ceramics together with a pair of cantilevers compose a longitudinal *** bending mode of cylindrical stator is excited by the longitudinal vibration of PZT ***,linear simple harmonic motions are achieved at the particle on the *** the frictional force between rotor and stator is the driving force to realize the rotational motion of *** PZT ceramics work with d mode,which have high electromechanical coupling efficiency and could improve the output *** working principle of proposed motor was *** cylinder and longitudinal transducer were designed with *** sensitive parameters of resonant frequency of transducers and cylinder were gained with modal *** longitudinal resonant frequency of transducers and bending resonant frequency of cylinder were degenerated,and the motion trajectories of nodes on the teeth were *** results of this study could be useful in the development of this new type of ultrasonic motor.

关键词： Ultrasonic motor cylindrical cantilever type longitudinal transducer FEM

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