模糊分数阶滑模控制的BLDCM控制系统

针对整数阶滑模控制在无刷直流电机系统中容易引起的抖振现象,以及无刷直流电机系统的非线性、实时性,设计一种模糊分数阶滑模控制器。在整数阶滑模控制器的基础上,在滑模切换函数中加入分数阶微积分算子,结合系统二阶状态方程和指数趋近律,设计了分数阶滑模控制器,并且通过Lyapunov稳定性原理和分数阶微积分理论证明了系统的稳定性。仿真及试验的结果表明,对比传统的整数阶滑模控制,所提方法可以有效减弱无刷直流电机系统的抖振,具有更好的动静态控制性能。

BLDCM Control Systembased on Fuzzy Fractional Order Sliding Mode Control

An improved fuzzyfractional order sliding model control was proposed for brushless DC speed regulating system to the chattering appearance caused by disturbance in sliding model control,also for the non-linearity and thereal-time performance of brushless DC motor system.The operator of fractional calculus was introduced to the switching function of sliding mode,and fractional sliding model was designed combining second order mathematical model andexponential reaching law.The stability analysis of the system was based on Lyapunov theorem and fractional calculus.The simulation and experimental results showed that the chattering was reduced effectively by the proposed method,also the dynamic and static control performances were better.