Speed-regulation System of BLDC Motor Based on P-Fuzzy Self-adaptive PID Control
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摘要: 分析了无刷直流电动机的数学模型,提出了一种新型的P-模糊自适应PID控制方法,并在Matlab/Simulink环境中建立了基于P-模糊自适应PID控制的无刷直流电动机调速系统仿真模型。在该调速系统中,电流控制采用电流滞环,转速控制采用P控制和模糊自适应PID控制相结合的方式,实现了电流滞环和转速模糊控制的双闭环调速控制功能。仿真结果表明,该系统与基于常规PID控制的调速系统相比,系统响应时间缩短一半,且超调减小,具有较强的鲁棒性和自适应能力。Abstract: The paper analyzed the mathematical model of BLDC motor,proposed a novel P-fuzzy self-adaptive PID control method and established a simulation model of speedregulation system of BLDC motor based on P-fuzzy self-adaptive PID control in Matlab/Simulink.In the system,a current hysteresis is applied in the current loop and a hybrid scheme of P and fuzzy self-adaptive PID control is applied in the speed loop,thus speed-regulation control function of double close loops is realized.The simulation result showed that the speed-regulation system of BLDC motor based on P-fuzzy self-adaptive PID control has half-shortened response time,less overshoot,and stronger robustness and self-adapting ability compared with the speed-regulation system based on normal PID control.
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