摘要
在无刷直流电机转矩性能优化控制问题的研究中,为克服无刷直流电机电流滞环控制策略电磁转矩脉动抑制效果不明显、无刷直流电机直接转矩控制存在磁链观测困难、控制系统结构复杂,以及传统的PID控制方法在对无刷直流电动机进行控制时存在精度低、抗干扰能力差等问题,提出了一种采用模糊自适应PID理论的省去磁链观测器的改进无刷直流电机直接转矩控制方法,采用模糊自适应PID控制算法设计了转速调节器器,推导了电磁转矩观测的计算式并制定了简化直接转矩控制控制的开关表。通过MATLAB平台进行仿真,表明无刷直流电机的简化直接转矩控制比电流滞环控制转矩脉动更少、抗干扰性更强,模糊自适应P1D控制无刷直流电机控制系统比传统的PID控制转速响应快,超调更少。
In this paper, an improved Brushless DC motor direct torque control method of eliminating flux observ- er was proposed based on the theory of fuzzy adaptive PID. A speed regulator was designed based on the fuzzy adap- tive PID control algorithm and electromagnetic torque observer. The formula of Electromagnetic torque observer was derived and the switch table of simplified direct torque control was made. The simulation based on MATLAB/SIMU- LINK shows that the simplified direct torque control of brushless DC motor has less torque ripple than current hystere- sis control and stronger anti-interference. The Brushless DC motor control system based on fuzzy adaptive PID control has faster speed response and much less overshoot than Brushless DC motor control system based on traditional PID control.
出处
《计算机仿真》
CSCD
北大核心
2014年第1期323-327,共5页
Computer Simulation
