基于DSP的专家PID控制在无刷直流电机的应用

Application of Expert PID Control Based on DSP in Brushless DC Motor 

摘要:

针对无刷直流电机传统控制的不足,在DSP控制框架内设计了电机的专家整定PID控制系统;系统将DSP技术和专家控制技术相结合,DSP在完成信息分析处理和协调各部件等工作的同时,计算出无刷直流电机转子转速,转速值与上位机设定值比较后,将差值送入专家整定PID控制器,利用专家整定PID控制器快速、灵活、准确的参数整定优势,输出合适的PWM占空比控制转速,实现电机的闭环控制;仿真结果显示,该控制方法与普通PID控制相比,具有响应快、误差小、抗负载扰动能力强等优点,验证该方案的有效性,具有一定的应用借鉴意义。

Abstract:

In allusion to the deficiency of traditional control of BLDCM, this paper studies the realization of expert self-adjusting PID motor control system in the DSP control theory framework. The DSP chip to calculate the rotor speed of BLDCM at the same time to completed these works of Information analysis processing and coordinate the various components. Transfers the difference to expert self-adjusting PID controller after comparing the calculated results with the PC setting value, By using the advantage of expert self-adjusting PID controller to parameter tuning is rapid, accurate, convenient and flexible. Thus output the appropriate PWM duty ratio to control the speed, So as to realize the motor closed-loop control. Compared with common PID control simulation results, the simulation results show that fast response, small error, and good anti jamming ability verified the effectiveness of the program, It has a certain reference meaning in the real application .