| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power steering device capable of calculating a steering angle correctly even when environmental temperature changes.SOLUTION: An ECU 29 calculates a steering angle of a steering wheel 2 based on output of a rotation angle sensor 28 and EPS gear ratio (gear ratio of a rack part 13a and a pinion shaft 11a and reduction ratio of a transfer mechanism 24). The ECU 29 further calculates correction amount for cancelling a steering angle error caused by temperature change based on temperature of the rack shaft 13 detected by a temperature sensor 15 and a map M stored in a memory 29a, and adds the correction amount to the calculated steering angle for correction. |
