| 摘要 |
PROBLEM TO BE SOLVED: To execute calibration of a torque sensor by using a torque sensor signal in a state of excluding an influence of mechanical components, etc. in executing the calibration in a state of assembling the torque sensor in a steering column.SOLUTION: A torque sensor (3) is arranged between an input shaft (2a) and an output shaft (2b) of a steering shaft (2) for transmitting input torque to wheels, and outputs a torque sensor signal according to the input torque. Two encoders (21a, 21b) are arranged to the input shaft (2a) and the output shaft (2b) one by one, and output angle information according to the input torque. A calibration device (30) calculates differential values of the two encoders (21a, 21b) and the angle information, removes the differential values from the toque sensor signal, and executes calibration of the toque sensor (3) by using the toque sensor signal from which the differential values are removed. |
