感应电机模糊自适应全阶磁链观测器的仿真研究

Simulation Study on the Fuzzy Adaptive Full-order Flux Observer for Induction Motor

针对感应电机的全阶磁链观测器存在低速不稳定问题,提出一种模糊自适应全阶磁链观测器。通过设计观测器的反馈增益矩阵,使得系统不稳定区域最小化,并采用模糊转速自适应律来替代PI型转速自适应律,提高转速辨识精度。将模糊自适应全阶磁链观测器应用到转子磁场定向矢量控制系统,仿真和实验结果表明该系统在各种工况下都能稳定运行,具有较好的自适应性和鲁棒性。

For the low-speed instability problem of speed adaptive full order flux observer for induction motor,a fuzzy adaptive full-order flux observer was presented,and the feedback gain matrix of the observer was given to minimize the unstable area of the system. A fuzzy speed adaptive law design method was proposed to replace the PI speed adaptive law and to improve the accuracy of the speed identification. The fuzzy adaptive full-order flux observer was applied to the rotor field oriented vector control system. The simulation and experimental results show that the system can run stably under various operating conditions, and has good adaptability and robustness.