Modelling of ultrasonic motor with dead-zone based on Hammerstein model structure  

作　　者：Xin-liang ZHANG Yong-hong TAN 

机构地区：[1]Department of Automation, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China [2]Laboratory of Intelligent Systems and Control Engineering, Guilin University of Electronic Technology, Guilin 541004, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2008年第1期58-64,共7页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project supported by the National Natural Science Foundation of China (No. 60572055);the Natural Science Foundation of Guangxi Province (No. 0339068), China

摘　　要：The ultrasonic motor (USM) possesses heavy nonlinearities which vary with driving conditions and load-dependent characteristics such as the dead-zone. In this paper, an identification method for the rotary travelling-wave type ultrasonic motor (RTWUSM) with dead-zone is proposed based on a modified Hammerstein model structure. The driving voltage contributing effect on the nonlinearities of the RTWUSM was transformed to the change of dynamic parameters against the driving voltage. The dead-zone of the RTWUSM is identified based upon the above transformation. Experiment results showed good agreement be- tween the output of the proposed model and actual measured output.The ultrasonic motor （USM） possesses heavy nonlinearities which vary with driving conditions and load-dependent characteristics such as the dead-zone. In this paper, an identification method for the rotary travelling-wave type ultrasonic motor （RTWUSM） with dead-zone is proposed based on a modified Hammerstein model structure. The driving voltage contributing effect on the nonlinearities of the RTWUSM was transformed to the change of dynamic parameters against the driving voltage. The dead-zone of the RTWUSM is identified based upon the above transformation. Experiment results showed good agreement between the output of the proposed model and actual measured output.

关 键 词：Ultrasonic motor （USM） Hammerstein model DEAD-ZONE NONLINEARITY IDENTIFICATION 

分 类 号：TM32[电气工程—电机]