A displacement sensor with smaller volume and lower cost is needed for magnetic suspension control system.A transverse flux displacement sensor based on eddy current sensors is studied.The sensor analysis is based on its working principle.The parameters of excitation coil and induction coil are designed by particle swarm optimization,and the design process of the transverse flux sensor is simplified.The developed displacement sensor has a sensitivity of 7.2 V/mm,a linearity of 1.7%,and a detection range of±0.5 mm.The sensor is applied in a magnetic levitation permanent magnet synchronous motor system.When the motor speed is 20 000 r/min,the high-speed magnetic levitation rotor still maintains stable operation.The transverse flux displacement sensors developed in this paper can meet the requirements of magnetic suspension motor displacement detection and suspension control,and achieve the control effect of similar products.
关键词
电涡流传感器/横向磁通传感器/粒子群算法/磁悬浮系统/永磁同步电机
Key words
eddy current sensor/transverse flux sensor/particle swarm optimization/magnetic levitation system/permanent magnet synchronous motor
维普
万方数据