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		题名	作者	年代	出处	被引量
	1	A new hybrid piezoelectric ultrasonic motor with two stators显示文摘A new hybrid piezoelectric ultrasonic motor, which consists of one rotor and two stators, was proposed in this paper. In order to match the resonance frequencies of longitudinal vibration and torsional vibration excited in the stators, a symmetrical structure was adopted in design of the motor. A so-called mass matching method, namely adding two rings to the outside circumference of the two stators respectively, was used to adjust the resonance frequencies of these two vibrations. A finite element model was developed using ANSYS software for the purpose of analyzing the resonance frequencies of longitudinal vibration and torsional vibration as well as the function of the adjusting rings. The results show that the resonance frequency of torsional vibration varies with the position of the ring, but the resonance frequency of longitudinal vibration changes little. By means of adjusting the mass and the position of the rings, the first order resonance frequency of longitudinal vibration is coincided with that of torsional vibration and the value is 20.75kHz. An experimental prototype motor was fabricated according to the analytical results and its performance is in agreement with the theoretical predictions. The speed of motor reaches the maximum 92r/min at the working frequency 19.0kHz.	易幼平 Wolfgang Seemann Rainer Gausmann 钟掘	2005	Journal of Central South University of Technology2005，12，3：	2
	2	Development and analysis of a longitudinal and torsional type ultrasonic motor with two stators 显示文摘	YI You-ping SEEMANN W GAUSMANN R	2005	Ultrasonics2005，43，：	1
	3	Reflectance of leaf components 显示文摘	Gausmann H W	1977	Remote Sensing Environment1977，6，：	1
	4	A new hybrid piezoelectric ultrasonic motor with two stators显示文摘	YI Y P SEEMANN W GAUSMANN R ZHONG Jue		0，，：	1
	5	Development and analysis of a longitudinal and torsional type ultrasonic motor with two stators显示文摘	YI Youping SEEMANN W GAUSMANN R	2005	Ultrasonics2005，43，：	1
	6	A method for matching the eigenfrequencies of longitudinal and torsional vibrations in a hybrid piezoelectric motor 显示文摘	Yi Y P Seemann W Gausmann R	2006	Journal of Sound and Vibration2006，295，35：	1
	7	Age effects of cotton leaves on light reflectance,transmittance,and absorption and on water content and thickness显示文摘	GAUSMANN H W ALLEN W A ESCOBAR D E	1971	Agronomy Journal1971，，43：	1
	8	Development and analysis of a longitudinal and torsional type ultrasonic motor with two stators显示文摘	YI Youping SEEMANN Wolfgang GAUSMANN Rainer	2005	Ultrasonics2005，43，：	1

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