开关磁阻电机的模糊分数阶PID控制算法研究

开关磁阻电机(SRM)的双凸极机械结构和开关工作特性,导致常规控制算法在其调速控制时,存在转矩脉动大、动态性能一般等问题。论文应用分数阶PID控制算法鲁棒性强和模糊控制不依赖于精确数学模型的优点,提出了一种基于模糊分数阶PID转矩控制算法。在适应SRM转矩控制模糊规则表的基础上,以转速偏差和偏差变化率为输入,通过模糊推理自适应调整分数阶PID控制器的比例系数、积分阶次、微分阶次,使SRM的转矩脉动较小。仿真结果表明该算法使开关磁阻电机的转矩脉动较小,动态响应好。

Research on the fuzzy-fractional PID control algorithm in switched reluctance motor

The switched reluctance motor (SRM) of doubly salient mechanical structure and the switching characteristics lead to the torque ripple, dynamic general performance and other issues of the conventional control algorithm in its speed control.Application papers of fractional PID control algorithm robustness and advantages of fuzzy control do not depend on the advantage of precise mathematical model, and a control algorithm based on fuzzy fractional order PID torque is proposed.On the basis of fuzzy rules adapt to SRM torque control, the speed deviation and the deviation change rate are taken as input, SRM turn torque ripple is small which is achieved by fuzzy inference adaptive fractional order PID controller proportional coefficient, integral order and the differential order.Simulation results show that the algorithm enables torque ripple of switched reluctance motor is smaller, as well as good dynamic response.