摘  要：以旋转行波型超声电机为例，初步构建了超声电机理论体系，系统地提出并阐述了超声电机机电耦合动力系统的构成、模块划分及其在整个超声电机理论体系中的关键地位，分析并指出了超声电机机电耦合动力系统建模的思想方法、技术路线和实现措施，提出了超声电机需进一步研究的关键技术问题。
关键词：超声电机；机电耦合动力系统；理论体系；数学模型

Abstract: This paper proposed the fundamental system info of ultrasonic motors.Detailed analysed on the construction of the electro-mechanical dynamic system,functions and characteristics of its separate modules.Key ideas were also given to fully understand the modeling methods of the dynamic system,and to improve the electro-mechanical properties of ultrasonic motor.
Key Words: Ultrasonic motor；Electro-mechanical dynamic system;System info;Theoretical modeling