Research on Planetary Gear Reducer with Dynamic Torque Measurement

Abstract

Torque is a main parameter of mechanical transmission system, while the dynamic torque measurement is a technical difficulty in mechanical test system. In order to improve the level of dynamic torque measurement technique, the authors synthetically analyzed the existing problems of the existing torque sensor, studied on the principle of planetary gear transmission, researched piezoelectric sensor performance, and then put forward the planetary gear reducer with torque self-inspection. To improve the design of planetary gear reducer and use piezoelectric force sensor in measuring the gear ring of torque, then calculate the torque of input shaft and output shaft, and transfer torque measurement and dynamic transmission into one, change the complex torque measurement into simple pressure measurement, simplify the torque measuring system, improve the dynamic performance of the torque measurement. The study indicates that the planetary gear reducer with torque self-inspection has such advantages as the simple principle of measurement, high sensitivity, high signal-to-noise ratio, reliable work, small impact by environmental factors, convenient maintenance and so on. It can greatly improve the detection accuracy and efficiency of torque measurement, and be widely used in all kinds of torque measurement field.