差动动铁型磁电速度传感器的研究

摘要

针对目前软支撑平衡测试机普遍使用的动圈型磁电速度传感器的缺点,研究了一种改进的动磁铁型磁电速度传感器的结构,分析了其结构优点,给出了有限元软件的磁场分析结果.结果表明利用差动特性使传感器具有较高的输出灵敏度和更好的线性度.进行了实验测试,将该传感器与标准传感器进行了比对,证明了计算的正确性.最后将动磁铁型磁电速度传感器应用于软支撑平衡测试机,证明了其有效性.%Aiming at the disadvantages of the coil-moving type velocity sensor applied to the soft suspension balancing test machine, a kind of enhanced differential magnet-moving type velocity sensor is studied.The advantage of the structure of the new sensor is discussed.The analysis of the magnetic filed distribution based on the Finite Element Method (FEM) indicates that the magnet-moving type sensor hosts a high sensitivity and a good linearity.The test of the sensor compared with the standard velocity sensor is performed, which confirms the FEM result.The application of the differential magnet-moving type velocity sensor to the soft suspension balancing test machine proves that the sensor is able to work very well.