Immune PI control on PMSM speed regulating system

This paper presents an immune PI control that consists of immune optimization algorithm and PI control. Traditional PI control can't quickly match variation of motor variables or load disturbance in permanent magnet synchronous motor since control parameters are discrete and off-line adjusted. Therefore, by designing target function, antigen affinity, antibodies affinity and mutation, the immune algorithm optimizes parameters and memory cells. The tests and the simulation with time-based Parameters demonstrate immune algorithm makes control strategy and has global optimization ability and strong robustness. Based on DSP technology and SVPWM algorithm, the system shows that immune PI control system can obtain stable situation in 50ms, have much improvement in dynamic and static performance.