中文摘要：

无轴承永磁薄片电机转子径向偏移和转角的实时精确检测对电机高速运行时的稳定悬浮至关重要。利用三个电涡流传感器的安装位置和输出参数在径向空间上的坐标关系，建立数学模型，并在数字控制器上实时分析计算，解算出无轴承永磁薄片电机转子径向偏移量；依据三个霍尔传感器的安装位置，综合比较各霍尔传感器输出磁密信号，分析判断转子转角象限，通过反余弦法计算出转子转角。将实时计算得到的转子径向偏移值和转角值代人无轴承永磁薄片电机的径向悬浮力数学模型，最后通过实验实现电机高速闭环运行时的稳定悬浮，验证本文提出的转子径向偏移和转角检测方法的正确性。

英文摘要：

Real-time and accurate detection of rotor radial offset and rotor angle of bearingless permanent magnet slice motor are quite essential for the stable suspension in high-speed operation. In this paper, the coordinate relations between the locations of three eddy current sensors and output parameters on the radial space was put forward to analyze and calcu- late real-time solution with the establishment of mathematical models, and the rotor radial offset of bearingless permanent magnet slice motor was calculated. Based on the installation position of three Hall sensors, comprehensive comparison of each Hall sensor output flux density signal was achieved, the rotor angle quadrant was analyzed and determined, the rotor an- gle was calculated by arceosine rotor angle. The realtime rotor radial deviation value and angle value were substituted to ra- dial suspension force mathematical model of bearingless permanent magnet slice motor. The experiment which can realize the stable suspension of rotor at high speed closed loop operation verifies the correctness of real-time accurate detection of rotor radial offset and angle.