To accurately correct a linearity error in a detection value from a magnet type torque sensor.SOLUTION: A torque sensor 1 comprises a storage unit 47c that stores a correction map indicating the relationship between a correction value and a detection value output from a magnetic detection element 47a. The correction map stores correction values at at least a first correction point and a second correction point and a third correction point between the first correction point and second correction point. The third correction point is set so that the difference between an actual detection value and an interpolation value obtained by performing linear approximation and interpolation between a detection value at the first correction point and a detection value at the second correction point becomes maximum.SELECTED DRAWING: Figure 13
【課題】磁石式トルクセンサの検出値の直線性誤差を精度良く補正する。【解決手段】トルクセンサ1は、磁気検出素子47aが出力する検出値と補正値との間の関係を示す補正マップを記憶した記憶部47cを備える。補正マップは、少なくとも第1補正点及び第2補正点と、第1補正点及び第2補正点との間の第3補正点と、における各々の補正値を記憶し、第1補正点の検出値と第2補正点の検出値との間を直線近似して補間することにより得られる補間値と、実際の検出値と、の間の差分が最大となる点に第3補正点が設定されている。【選択図】図13
TORQUE SENSOR, VEHICLE STEERING DEVICE, AND METHOD FOR MANUFACTURING TORQUE SENSOR
トルクセンサ、車両操向装置及びトルクセンサの製造方法
2024-04-17
Patent
Electronic Resource
Japanese
TORQUE SENSOR, MANUFACTURING METHOD OF TORQUE SENSOR, ADJUSTMENT DEVICE AND VEHICLE STEERING DEVICE
European Patent Office | 2022
|European Patent Office | 2022
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