Kubota Corporation

Akiyoshi Hanazawa

Shiro Takada

Taro Saito

Mutsumi Sunahata

Akira Nakamoto

Takuji Mori

Kazunori Sakunaga

A torque measuring system can detect the magnitude of a torque applied to a torque sensing shaft and output a torque signal with respect to the torque. A torque sensor of the system has a measurement mode for producing torque signals and a correction mode for correction of its detection characteristics. An external signal for selection of one of the two modes is supplied to the torque sensor by a characteristic check device. The correction mode enables the correction of the torque sensor characteristics to be effected accurately and in a short time period without requiring manual labor.

Torque measuring system

A temperature compensating device for a torque measuring apparatus of the magneto-strictive type. A torque transmission shaft has a magnetically anisotropic portion formed on the periphery of the shaft. A sensing coil is disposed around the torque transmission shaft in corresponding relation to the magnetically anisotropic portion. A DC voltage from a constant voltage generator is supplied to the sensing coil. A torque detection signal is derived from the AC component of the voltage developed across the sensing coil, and the DC resistance of the sensing coil is detected from the DC component of the voltage, whereby the temperature of the sensing coil is detected. The torque detection characteristics of the apparatus is temperature-compensated on the basis of the temperature detection signal.

Temperature compensating device for torque measuring apparatus

Growing community of inventors

Yao, Japan

Akiyoshi Hanazawa