基于转动惯量辨识与扰动补偿的永磁同步电机滑模控制

针对永磁同步电机负载转矩波动及负载转动惯量的变化对控制性能的影响，采用一种模型参考自适应控制方法实时辨识转动惯量，利用设计的扰动补偿观测器，结合辨识出的转动惯量估算出负载转矩值，然后将观测的负载转矩转换为观测电流值与给定电流值的误差，从而对控制系统进行前馈补偿，以减小转矩电流脉动，提高系统的抗扰能力和响应速度。通过模型在环实物仿真平台验证，所采用的控制策略对系统的抗扰性能和响应速度都有很好的改善效果，增强了系统的鲁棒性。

Sliding Mode Control of Permanent Magnet Synchronous Motor Based on Moment of Inertia Identification and Disturbance Compensation

In view of the negative influence of load torque fluctuation and load moment of inertia exerted on the control performance of permanent magnet synchronous motor, a model reference adaptive control method has thus been adopted to identify the moment of inertia in real time. By using the designed disturbance compensation observer, the load torque value combined with the identified moment of inertia can be estimated, with the observed load torque converted into the observed current value for the error with the given current value. Thus, the feed forward compensation of the control system helps to reduce the torque current ripple, thus improving the anti-interference ability and response speed of the system. Based on the verification of model in the loop physical simulation platform, it is testified that the control strategy has a good effect on the anti-interference performance and response speed of the system, thus enhancing the robustness of the system.