The development on digital angular displacement sensor of carriage's torque force

This paper discusses the principle of a digital angular displacement sensor used to dynamically measure the angular displacement of carriage torque force or torque moment. Secondary instrument and software are also designed. The environment experiments and table calibrating experiments are given in the paper, the results of these experiments show the sensor has reliable performance and high precision. It has been proven the sensor is suitable to dynamically measure the torque moment of all carriages' torque axis and monitor the life cycle of torque axis.