摘要：磁悬浮轴承转子位移传感器检测的速度和精度，对磁悬浮轴承位移闭环控制的精度具有重要影响。论文指出了磁悬浮轴承转子传统的位移传感器检测方法的不足，分析了参数估计法，状态估计等几种目前主要的磁悬浮轴承自检测技术的基本原理，性能和适用范围，最后，对磁悬浮轴承位移自检测技术的发展趋势做了进一步阐述。

关键词：磁悬浮轴承；自检测；参数估计；状态估计

Abstract: The speed and accuracy of rotor displacement sensor for magnetic bearings have important impact on the precision of closed-loop control for magnetic bearings The article pointed out the drawbacks of the traditional displacement sensors The principles, performances and applicable ranges of parameter estimation, state estimation and other main self-sensing technologies were analyzed Finally, the development trend and prospect of self-sensing
technology were further formulated

Key words: magnetic bearings；self-sensing；parameter estimation；state estimation