Research on Anti-Disturbance Control of PMSM Based on Non-Singular Torque Observer
To solve the influence of load torque disturbance and the change in moment of inertia of perma-nent magnet synchronous motor on the control performance,a non-singular sliding mode observer of load torque is used to identify the load torque in real time,and the observed load torque was converted into com-pensation current in proportion.The observed load torque feed forward is compensated into the torque cur-rent,for the control system and reduce the influence of load disturbance.It adopts the model reference adap-tive algorithm to,and input the observed moment of inertia into the load torque observer to reduce the influ-ence of inertia load disturbance.The simulation and physical simulation results show that the compensation effect of the designed non-singular load torque sliding mode observer is better than that of the first order sliding mode torque observer when the load torque and system inertia change under different working condi-tions.The compensation effect can be quickly restored to the given speed,and the anti-disturbance perform-ance of the system is greatly improved.
permanent magnet synchronous motorload torque observervariable gain algorithmsliding mode control
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维普
