CONTROL DEVICE FOR STEER-BY-WIRE STEERING MECHANISM
First Claim
1. A control device configured to perform control for a steer-by-wire steering mechanism,the steer-by-wire steering mechanism including:
- a steering wheel mechanically unconnected with a turning shaft, the turning shaft configured to turn wheels and change toe angles of the wheels;
a steering angle sensor configured to detect a steering angle of the steering wheel;
a turning motor configured to cause the turning shaft to perform turning operation; and
a toe angle controlling motor configured to cause the turning shaft to perform toe angle changing operation,the control device configured to control the turning motor based on a traveling state and a steering angle detected by the steering angle sensor and configured to control the toe angle controlling motor based on the traveling state,the control device comprising;
a tire lateral force detection unit configured to detect tire lateral forces acting on left and right wheels; and
a toe angle control unit configured to control toe angles of the left and right wheels independently of each other such that the detected tire lateral forces become target lateral forces.
1 Assignment
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Accused Products
Abstract
Provided is a control device for a steer-by-wire steering mechanism, the control device including: a tire lateral force detection unit configured to detect tire lateral forces acting on left and right wheels; and a toe angle control unit configured to control toe angles of left and right wheels independently of each other such that the detected tire lateral forces become target lateral forces. Not during deceleration, the toe angle control unit sets target lateral forces FLt and FRt such that the total sum of the left and right target lateral forces is not changed and the total sum of absolute values thereof is decreased, and during deceleration, the toe angle control unit sets the target lateral forces FLt and FRt such that straight traveling stability can be obtained.
36 Citations
6 Claims
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1. A control device configured to perform control for a steer-by-wire steering mechanism,
the steer-by-wire steering mechanism including: -
a steering wheel mechanically unconnected with a turning shaft, the turning shaft configured to turn wheels and change toe angles of the wheels; a steering angle sensor configured to detect a steering angle of the steering wheel; a turning motor configured to cause the turning shaft to perform turning operation; and a toe angle controlling motor configured to cause the turning shaft to perform toe angle changing operation, the control device configured to control the turning motor based on a traveling state and a steering angle detected by the steering angle sensor and configured to control the toe angle controlling motor based on the traveling state, the control device comprising; a tire lateral force detection unit configured to detect tire lateral forces acting on left and right wheels; and a toe angle control unit configured to control toe angles of the left and right wheels independently of each other such that the detected tire lateral forces become target lateral forces. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification