永磁同步电机分数阶与滑模变结构复合控制研究

针对永磁同步电机矢量控制系统的速度环,通过引入分数阶微积分及滑模变结构控制理论,设计了一种分数阶与滑模变结构复合控制器.该复合控制器通过一个可变的加权因子α将分数阶PIλDμ与滑模变结构控制有效、协调地组合起来,从而达到了既克服滑模变结构在滑动平面原点附近产生高频颤动的缺点,又拓宽了相对于传统比例-积分-微分(PID)控制器的调节范围,使得永磁同步电机控制系统的鲁棒性、快速性、稳定性和抗干扰能力得以提高,对于采用多种复合交叉控制方法来改善电动机控制系统具有参考意义.

Hybrid Control of Fractional Order and Sliding-Mode Variable Structure in Permanent Magnet Synchronous Motor

For the speed loop of a permanent magnet synchronous motor(PMSM),fractional calculus and the sliding-mode variable structure control theory were employed to design the hybrid controller which integrates a fractional order PIλDμ controller with a sliding-mode variable structure controller.The fractional order PIλDμ and sliding-mode variable structure control are effectively combined by using the variable weighted factor α.The hybrid controller not only overcomes the high-frequency quiver near the origin of the sliding plane but also broadens the scope of adjustment of conventional PID controllers,leading to higher robustness,anti-jamming capability,good rapidity and stability of PMSM.The results of this study may be beneficial to the improvement of complex cross-control methods in motor control systems.