An Ultrasonic Actuating Driver for a Central Supporting Bending Mode Using a Motional Current Technique

Fuhliang WEN  Chao-Chun WEN  Ming-Hung LAI  Ichien HSU  

IEICE TRANSACTIONS on Electronics   Vol.E92-C    No.8    pp.1058-1065
Publication Date: 2009/08/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E92.C.1058
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (IS-EMD2008))
Category: Actuators & Pulse Generators
ultrasonic actuator,  driving circuit,  motional current,  resonant circuit,  admittance,  

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This paper proposes the design of a driver to deal with a thin-disc central supporting structure ultrasonic actuator based on the vibration modes and the equivalent circuit. In order to gain the electromechanical match at resonant frequency, a spectrum analyzer should measure admittance for driving piezoelectric ceramics. The virtual analyzer also investigated the characteristics of a MODEL-E equivalent circuit based upon the admittance-frequency response. The inherent capacitance from an ultrasonic actuator became the partial component in the design of a resonant circuit. IsSpice software is introduced to simulate as well as the experimental results has demonstrated a high agreement related to the conceptual design and practical implementation for the driving circuit.