基于球对称环型阵列传感器的扭矩测量系统

Torque Measurement System Based on Spherically Symmetric Circular Array Sensor

针对恶劣环境下机械转轴扭矩动态测量问题,利用交流电磁感应原理,采用球对称环型阵列器件和专门的磁电式检测器,构造一种新型的非接触扭矩测量传感器。文章设计了传感器的结构并对测量原理进行了分析,给出了测量系统框架结构。通过磁性钢球作切割磁力线运动,引起感应信号的周期性变化,实现位移信号到电信号的转换,得到了两路具有相位差的扭矩信号,对信号进行了放大、调相和整形处理,并给出了相应的方法和处理电路。

Aiming at the problems on dynamic measurement of mechanical spindle torque in extreme environments, we used the electromagnetic induction principle of AC, a spherically symmetric circular array device and a magneticelectric detector to compose a new type of non-contact torque sensor. In this paper, we designed the structure and analyzed the measuring principle of the sensor, then established the framework of the measurement system. By the movement of magnetic ball cutting through the magnetic line of force, the inducted signal changes periodically. We achieved displacement signal to electrical signal conversion, and get two torque signal with different phase. We had amplified, modulated phase and shaped with the signal, and given the corresponding methods and processing circuits.