超声波电机电学匹配与控制技术研究

摘要

由于微机电领域中超声波电机得到越来越的关注，其伺服控制技术的研究也越来越广泛。笔者首先对超声波电机进行电学分析。之后分析了超声电机3种控制变量，研究其控制特点及他们与控制目标的关系。指出结合调频调相调幅等多种控制方式，综合多种先进控制策略的优点，实现超声电机的速度、位置、能量转换效率和电机寿命等多目标优化控制，将是超声电机伺服控制的发展方向。之后分析了目前超声电机控制系统常见的三种控制器，指出用DSP为核心的控制器将是其控制系统的首选。%Servo control technology of ultrasonic motors(USM)is not mature enough. Firstly,the electrical match of USM is analyzed. Then,a concrete analysis is made of the characteristics of three kinds of control variable and the relationships between control variable and control objective,al kinds of control models and control strategies. Final y,3 kinds of control ers of USM in used are analyzed,indicating that building special servo control system of USM based on DSP is the ifrst choice.