无轴传动控制系统滑模变结构观测器研究

摘要

It is difficult to observe the rotor flux accurately for every driving motor in the vector control system of shaft-less drive. A new rotor flux observer based on sliding mode theory was designed, and the algorithm convergence was proved by the Lyapunov theory. The simulation results show that the method has high accuracy of rotor flux observer, and has strong robustness to the change of rotor resistance.%针对无轴传动中矢量控制系统各运动单元驱动电机、转子磁链难以精确观测的问题,设计了一种基于滑模变结构理论的转子磁链观测器,并用李亚普诺夫理论证明了算法的收敛性.仿真结果显示,该方法有较高的转子磁链观测准确度,并对转子电阻的变化具有鲁棒性.