中文摘要：

LI De-xin is a Ph. D and Associate Professor in the School of Machinery and Precision Instrument Engineering, Xi＇an University of Technology. His research interests are in CAD/CAM, CIMS and rotary mechan- ical nonlinear dynamics, lidexin@ xaut. edu. cn QIN Shan-feng is studying for a master＇s degree in the School of Machinery and Precision Instrument Engineering, Xi＇an University of Technology. His current interests are in mechanical CAD/CAM and structural design. ZHANG Chao is studying for a master＇s degree in the School of Machinery and Precision Instrument Engineering, Xi＇ an University of Technology. His current interests are in mechanical CAD/CAM and structural design and robotics. YANG Chun-xi is studying for a master＇s degree in the School of Machinery and Precision Instrument Engineering, Xi＇ an University of Technology. His current interests are in testing and control of mechantronic system and robotics.