Magnetic Elastomer Sensor for Dynamic Torque Measurements in Magnetic Gears

Abstract

In this paper is proposed a dynamic torque sensor for precise measurement of torque changes at high rotational speeds. Sensor is based on magnetic elastomer material deformation and corresponding change in magnetic field amplitude and direction. Proposed sensor design is simple and acquire reliable readings for a wide range of rotational speeds. Sensor construction consists of magnetic elastomer coating with nanoparticles which is used for a sensing convertor, magneto-resistive linear field sensor, microprocessor unit for calibration and control. Numerical and experimental test results are demonstrated and analyzed. Sensor implementation aims magnetic gear mechatronic system specific requirements.