Effect of thickness of friction material on contact state of ultrasonic motor  

作　　者：曲建俊 王彦利 周宁宁 崔崴岭 

机构地区：[1]School of Mechatronics Engineering,Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2011年第6期7-10,共4页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.50975057);the National Basic Research Program of China(Grant No.2007CB607602)

摘　　要：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.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 gradiem 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.

关 键 词：ultrasonic motor contact state friction material GRADIENT 

分 类 号：TH117.3[机械工程—机械设计及理论]