Non-singular Terminal Sliding Mode Control of PMSM Based on a Novel Reaching Law and Disturbance Observer
To address issues of slow response speed and large chattering in permanent magnet synchronous motor(PMSM)speed control system,a non-singular terminal sliding mode control(NTSMC)strategy based on an improved double power reaching law(IDPRL)and load disturbance observer(DOB)was studied and proposed.The linear sliding mode surface was modified into non-singular terminal sliding surface,achieving reduction of system chattering and increase in convergence speed.The switching function is introduced into IDPRL to reduce steady-state error and system chattering.Moreover,a disturbance observer was designed,which compensated the observed value feedforward to the speed controller to realize accurate compensation of the disturbance.Simulation results show accuracy and feasibility of the proposed method.
NETL
NSTL
万方数据
维普
