Performances of ultrasonic motor (USM) considerably depend on contact state between stator and rotor.Based on an electric contact method,the effects of thickness of single homogeneous friction material and gradient friction material on contact state between stator and rotor were studied.The relative contact length was employed to describe the contact characteristics of stator and rotor.With the decrease of thickness of friction material,the contact characteristic of stator and rotor were analyzed and compared when single homogeneous friction material and gradient friction material were used.The experimental results showed that the effect of gradient friction material on contact characteristic is smaller than that of single homogeneous friction material when the thickness of friction material decreases.The result can provide experimental guidance for design and choosing of friction material for USM.
<正>As the key contact material part in ultrasonic motor(USM) system,friction materials play a very important r...
Yan-li WANG,Jian-jun QU,Ning-ning ZHOU,Wei-ling CUI Department of Mechtronics Engineering,Harbin Institute of Technology, No.92 West Da-Zhi Street,Harbin,Heilongjiang 150001,China
<正>As one of key materials for improving the performance of ultrasonic motor,the wear of friction material pla...
Yan-li WANG1,* Jian-jun QU 2 Xiu TIAN 1 1 Beijing Aerospace Control Instrument Research Institute,Beijing 100854 2 School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001