电动汽车PMSM电机速度环分数阶滑模控制研究

Fractional Sliding Mode Control of PMSM Motor Speed Ring for Electric Vehicle

针对传统整数阶滑模控制器在PMSM速度环控制中存在的电机转矩抖振问题,提出了分数阶指数趋近律滑模变结构控制,利用分数阶系统缓慢传递能量的特性来消减电机扭矩的抖振。仿真结果表明分数阶指数滑模控制器与传统指数趋近律滑模控制器相比,不但能在一定程度上消减扭矩的抖振,还提高了系统抗外部扰动的能力。

To solve the problem of chattering of PMSM Torque caused by traditional sliding mode control,we proposed fractional order sliding mode control.Use fractional calculus’property to reduce the chattering of Torque.Simulations show that new speed controller can reduce the chattering of Torque in some degree and increase the ability to response to the speed and disturbance.