Patent ID: 11926375
Assignee: JTEKT CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A steering control device for a steering system including a housing, a turning shaft which is accommodated in the housing such that the turning shaft is able to reciprocate, and an actuator which applies a motor torque for causing the turning shaft to reciprocate using a motor as a drive source, the steering control device comprising an electronic control unit configured to:
detect an absolute steering angle which is a rotation angle of a rotation shaft which is able to be converted into a turning angle of turning wheels connected to the turning shaft and which is expressed as an absolute angle including a range exceeding 360°;
determine whether movement of the turning shaft is limited and acquire a limit position determination angle corresponding to the absolute steering angle when it is determined that movement of the turning shaft is limited; and
compare a first stroke width which is a sum of an absolute value of the limit position determination angle on a right side and an absolute value of the limit position determination angle on a left side with a stroke threshold value corresponding to an entire stroke range of the turning shaft when an angle which indicates that the turning shaft is located at an end position and which is correlated with the absolute steering angle is defined as an end-position-corresponding angle and the limit position determination angles on the right and left sides are acquired, and set the end-position-corresponding angles on the right and left sides in a memory based on the limit position determination angles on the right and left sides when the first stroke width is greater than the stroke threshold value;
wherein the set end-position-corresponding angles on the right and left sides are angles at which movement of the turning shaft is physically limited by contact with the housing,
wherein the limit position determination angles on the right and left sides are less than the set end-position-corresponding angles on the right and left sides, respectively, when movement of the turning shaft is not physically limited by contact with the housing, and
wherein the stroke threshold value is an angle range that is less than an angle at which movement of the turning shaft is physically limited by contact with the housing.