Basic Characteristics of a Magnetostrictive-Type Torque Sensor for a Torque Sensor for a Low-Carbon Steel Steering Shaft

摘要

There are many requiremends for measuring torque, such as non-contact with the shaft, small size of the measurment device, and simple installation. Other requirements include no special processing in the shaft and cost-effectiveness. Therefore, we have proposed three magnetostrictive-type torque sensors for a steering shaft using an inverse magnetostrictive effect.Generally, a magnetostrictive-type torque sensor for a low-carbon steel shaft has a large hysteresis to the torque and output fluctuation due to axis rotation (0-level fluctuation). In this sensor, we show that the hysteresis and the 0-level fluctuation on the output voltage can be drastically decreased.