摘要
以一台无轴承永磁薄片电机为例,分析了电机悬浮机理并推导了悬浮力数学模型。通过对扩张状态观测器基本理论的分析,构造了电机悬浮系统扩张状态观测器,将作用于电机悬浮系统的外部扰动作为系统状态变量之一,将其观测出来并通过前馈补偿的控制方式施加于悬浮控制的输入端,与径向位移PID构成复合控制算法以提高悬浮性能。仿真和实验结果表明了所提控制策略的有效性。
A bearingless permanent magnet slice motor was investigated of which levitation principle and levitation force mathematical model were analyzed and deduced respectively. A extended state observer （ESO） of levitation system was established based on the fundamental theory of ESO, by utilization of which the outer disturbance of levitation system was viewed as one of system state variables. Then, the outer disturbance was observed and imposed on the input end of levitation control system by feedforward compensation method to form compound control signal with the radial displacement PID algorithm. Finally, the specific simulation and experiment results show the effectiveness of the proposed control strategy.
出处
《电气传动》
北大核心
2014年第12期58-61,共4页
Electric Drive
基金
江苏省精密制造工程技术研发中心开放基金资助(ZK13-04-01)
关键词
无轴承
薄片电机
径向扰动
扩张状态观测器
bearingless
slice motor
radial disturbance
extended state observer（ESO）
