永磁同步电机分数阶智能积分调速控制

Application of fractional intelligent integral controller for PMSM

永磁同步电机是一个多变量、非线性、强耦合的系统,对外界扰动及内部参数变化非常敏感。为改善其调速系统的动、静态性能,提高系统鲁棒性,提出了一种新的调速控制方法—分数阶智能积分控制策略。该控制策略是将比例作用与分数阶智能积分作用相结合,构成了分数阶智能积分控制器(PⅡλ)。相对于PI控制器,分数阶智能积分控制器可以获得更好的控制效果。仿真试验结果表明,分数阶智能积分控制器不仅能够快速、精确地跟踪给定速度,而且对负载扰动及参数变化具有更好的抗扰性和鲁棒性。

The permanent magnet synchronous motor（ PMSM） is a multivariable and nonlinear system with strong coupling. It’ s sensitive to interference and parameters variation. To improve the system static, dy-namic performance and robustness, a new speed control strategy-fractional intelligent integral strategy was proposed, which couples the proportion with fractional intelligent integration to constitute the fraction-al intelligent integral controller （ PⅡ^λ） . Compared with PI controller, the fractional intelligent integral controller achieves better control performance. The simulation results verify the fractional intelligent inte-gral controller not only can track the given speed quickly and accurately, but also has better anti-inter-ference and robustness with load and parameters variations.