基于DSP+CPLD的无刷直流电机三环控制设计

Design of BLDCM Triple-loop Control Based on DSP+CPLD

以先进的TMS320F2812型数字信号处理器(DSP)为主控制芯片,利用CPLD实现无刷直流电机(BLDCM)的逻辑换相,以位置环控制为主,速度环和电流环控制为辅,设计了一套BLDCM的三环控制系统。系统对数字电路与功率电路进行光耦隔离,确保整个系统具有良好的电磁兼容性。控制软件采用定周期控制,循环等待中断发生。实验结果表明,该系统工作稳定、可靠,具有良好的动、静态特性,且实时性强。

A triple-loop control system is designed.h uses the advanced digital signal processor（DSP） TMS320LF2812 as the main control chip,and it uses CPLD as logic phasic exchange of brushless direct current motor（BLDCM）.Digital circuit and power circuit are divided by photoelectric coupler.So it has good electromagnetic compatibility property.The set cycle control is adopted by the control software, and interrupt style is used.Experimental results show that the system works stably and reliably, and it has good dynamic and static performance and perfect real-time property is fine.