摘 要:该文提出在转速、电流双闭环的直流电机调速系统转速环采用模糊-PID混合控制方法。当给定转速与实际转速的偏差大于某一阈值时,采用模糊控制;而当偏差减小到设定阈值以下时,采用PID调节。利用Matlab对该控制方法进行仿真,仿真表明混合控制系统的动、静态性能明显优于常规PID控制系统。将该控制方法应用于DDSZ-1型电机及电气技术实验装置中的DJ23直流电机,以Atmega128为核心,以PWM为控制信号,设计了模糊-PID混合控制电机调速装置。试验结果验证了设计的混合控制调速系统鲁棒性好, 实用性强,结构简单。 关键词:直流电机;模糊-PID;混合控制;速度调节
Abstract: In this paper, a new hybrid speed regulating method based on Fuzzy-PID was proposed. It can be used in the speed loop for speed and current closed loop control DC motor control system.When the error between reference speed and real speed is bigger than some threshold value, uses the fuzzy control. But when the error reduces to the threshold value below, changes the PID adjustment.The simulation research on the hybrid speed regulating system of DC motor was carried out. The simulation results show that the system based on this hybrid speed regulating has better dynamic and static performance than the system based on PID speed regulating. A speed control system of DJ23 DC motor used in DDSZ-1 electrical machinery and electrical technology test installation was introduced.The system based on this new hybrid speed regulating method has a control unit of the single-chip Atmega128, using PWMcontrol signal to control DC motor.The results of experiment show that the system is of better robustness and strong practicality and simple structure. Key words: DC motor;fuzzy-PID; hybrid control;speed regulate
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