超声波电动机驱动用DDS信号发生器误差分析  

Error Analysis of DDS Signal Generator Used in Ultrasonic Motor Driver

作　　者：王龙帅[1] 史敬灼[1] 

机构地区：[1]河南科技大学,洛阳471003

出　　处：《微电机》2009年第4期69-72,共4页Micromotors

基　　金：河南省高校杰出科研人才创新工程项目基金资助(2005KYCX007)

摘　　要：根据超声波电动机对其驱动控制单元的要求,设计了一种用于超声波电机驱动的DDS信号发生器。该信号发生器基于可编程逻辑器件(CPLD)实现,能够给出频率及相位差可调的两路正弦信号,信号特征符合超声波电机驱动需求。DDS信号发生器处于超声波电机控制系统的前向通道中,其误差分析不仅可以指导DDS信号发生器的设计,而且对于提高系统动态控制性能具有重要意义。针对超声波电动机驱动应用场合,对DDS信号发生器进行了详细的误差分析,给出了定量分析结果。According to ultrasonic motor drive control unit, designed a DDS signal generator for ultrasonic motor-driven. The signal generator based on the CPLD, it generated the two sinusoidal signals with frequency and phase difference adjustable, and the signal characteristics with ultrasonic motor-driven demand. DDS signal generator at the front of ultrasonic motor control system, its error analysis not only could guide the design of DDS signal generator, but also had a great significance to improve the dynamic performance. According to ultrasonic motor application, this paper detailed error analysis of DDS signal generator, and gave the results of quantitative analysis.

关 键 词：超声波电动机 误差分析 直接数字频率合成 定量分析 

分 类 号：TM359.9[电气工程—电机]