一种双轴差动自感式传感器

A dual-axis self-induction differential sensor

主要介绍一种双轴差动自感式传感器的结构原理及测量线路,分析计算了双轴差动自感式传感器的标度因数和相位差;分析了在工程实践中测量电路、气隙长度与铁芯截面面积,以及铁芯短路,线圈匝间短路和分布参数对测量精度的影响。同时,针对电磁反作用力矩对测量精度的影响,通过计算分析,利用提高激磁电源频率、降低激磁电压方案,能够有利于双轴差动自感式传感器零位的调节,减小了电磁反作用力矩带来的测量误差。

This paper mainly introduces the structure and the measuring circuit of a dual-axis self-induction differential sensor.The scale factor and the phase difference of the sensor are analyzed and calculated.The influences of the measuring circuit,the air gap length,the core section area,the core short-circuit,the coil interturn short-circuit and the distribution parameters on the measuring accuracy in engineering practice are analyzed.In view of the influence of the electromagnetic reaction torque on the measurement accuracy,the zero position adjustment of the sensor is improved by increasing the exciting power frequency and reducing the exciting voltage.In this way the measurement error caused by electromagnetic reaction torque is reduced.