Brushless DC motor stepless speed regulation system based on  fuzzy adaptive PI controller

LI Cong ，YIN Wenqing , FENG Xuebin , ZHANG Yi

（Ｃｏｌｌｅｇｅ ｏｆ Ｅｎｇｉｎｅｅｒｉｎｇ, Ｎａｎｊｉｎｇ Ａｇｒｉｃｕｌｔｕｒａｌ Ｕｎｉｖｅｒｓｉｔｙ, Ｎａｎｊｉｎｇ ２１００３１, Ｃｈｉｎａ）

Abstract: In order to solve the problems of slow response, low control precision of the motor speed control, and traditional PID control strategy is difficult to achieve the expected effect when load or parameters of the motor speed system change, a new fuzzy adaptive PI control strategy was investigated, also, the simulation was studied to this strategy in the applications of brushless DC motor speed control system The TI company's TMS320F2812 was considered as the main control chip, and the IR2136 was taken as the drive chip to design the hardware platform on stepless speed regulation system of brushless DC motor The experimental results show that the fuzzy adaptive PI control strategy can speed up the response speed of motor speed control system, and it has good stability , high precision, and strong robustness, so it gets a good control effect, has a high application value

Key words: brushless DC motor；fuzzy adaptive PI controller；digtal signal processor(DSP)；stepless speed regulation system