Self-adaptive compensation strategy for minimum output current position error of bearingless slice motor

The invention discloses a self-adaptive compensation strategy for a minimum output current position error of a bearingless slice motor, and aims to solve the problem of rotor position estimation error caused by non-ideal factors such as loop filtering and motor parameter error in a traditional rotor flux observer, and the self-adaptive compensation is carried out on the rotor position error based on the thought of a perturbation and observation method. According to the strategy, output current is taken as an observation object, and full compensation of the bearingless slice motor rotor position estimation error is realized. The observed quantity is convenient to obtain, the rotor position error can be accurately reflected, the algorithm is easy to implement, and the system structure is simple. 本发明公开了无轴承薄片电机最小输出电流位置误差自适应补偿策略，针对传统转子磁链观测器中环路滤波、电机参数误差等非理想因素造成的转子位置估算误差问题，基于扰动观察法的思想，对转子位置误差进行自适应补偿。此策略以输出电流为观察对象，实现无轴承薄片电机转子位置估算误差的全补偿。该观察量便于获取，且能够准确反映转子位置误差，算法实现简单，系统结构简单。