无轴承电机轴向混合磁轴承自抗扰控制

Active disturbance rejection control for axial hybrid magnetic bearings of bearingless motors

为了实现无轴承电机轴向混合磁轴承的准确和稳定控制,依据自抗扰控制理论,设计了轴向混合磁轴承自抗扰控制系统,并给出其控制算法和控制结构。根据实验样机参数,利用MATLAB软件环境,构建了仿真系统,针对系统的阶跃响应、转子起浮、抗干扰能力等情况进行了仿真研究和性能分析。仿真试验结果表明,所设计的自抗扰控制系统具有精确度高、响应速度快、抗干扰能力强等特点,满足无轴承电机轴向混合磁轴承的高性能控制要求。

In order to achieve precise and steady control of axial hybrid magnetic bearings （HMB） of bearingless motors, an active disturbance rejection control （ADRC） system based on the theory of ADRC for the axial HMB is designed. The control arithmetic and configuration are given. According to parameters of the experiment rig, the simulation system was set up with Matlab software. The step response of system, the start up displacement curve of rotor and the performance of anti-disturbance of system were simulated and analyzed. The simulation results show that the active disturbance rejection control system is effective to the high-quality needs of the axial HMB with high precision, high speed of response and strong anti-disturbance.