VEHICLE STEERING CONTROL DEVICE AND METHOD
First Claim
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1. A vehicle steering control device:
- wherein a steering wheel is mechanically disconnected from a turning mechanism for tuning a steering road-wheel;
configured to perform a normal control for controlling a turning angle of the steering road-wheel on the basis of a first target turning angle set according to a steering angle of the steering wheel;
configured to perform an automatic turning control for controlling the turning angle of the steering road-wheel on the basis of a second target turning angle set according to a running state of vehicle; and
wherein the vehicle steering control device comprises a reaction-force control section configuredto control a steering reaction force to be applied to the steering wheel, by defining a value of the steering angle at which the steering reaction force is equal to 0, as a value of the steering angle at a time of straight running of the vehicle, under the normal control, andto control the steering reaction force, by defining a value of the steering angle set according to the second target turning angle, as the value of the steering angle at which the steering reaction force is equal to 0, under the automatic turning control.
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Abstract
Under an automatic turning control, a steering controller defines a value of steering angle set according to a target turning angle of the automatic turning control, as a value of steering angle at which a reaction force is equal to 0. Thereby, the steering controller controls a steering reaction force on the basis of a difference between an actual steering angle and the value of steering angle at which the reaction force is equal to 0.
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Citations
8 Claims
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1. A vehicle steering control device:
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wherein a steering wheel is mechanically disconnected from a turning mechanism for tuning a steering road-wheel; configured to perform a normal control for controlling a turning angle of the steering road-wheel on the basis of a first target turning angle set according to a steering angle of the steering wheel; configured to perform an automatic turning control for controlling the turning angle of the steering road-wheel on the basis of a second target turning angle set according to a running state of vehicle; and wherein the vehicle steering control device comprises a reaction-force control section configured to control a steering reaction force to be applied to the steering wheel, by defining a value of the steering angle at which the steering reaction force is equal to 0, as a value of the steering angle at a time of straight running of the vehicle, under the normal control, and to control the steering reaction force, by defining a value of the steering angle set according to the second target turning angle, as the value of the steering angle at which the steering reaction force is equal to 0, under the automatic turning control. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle steering control method comprising:
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performing a normal control for controlling a turning angle of a steering road-wheel on the basis of a first target turning angle set according to a steering angle of a steering wheel, wherein the steering wheel is mechanically disconnected from a turning mechanism for tuning the steering road-wheel; performing an automatic turning control for controlling the turning angle of the steering road-wheel on the basis of a second target turning angle set according to a running state of vehicle; controlling a steering reaction force to be applied to the steering wheel, by defining a value of the steering angle at which the steering reaction force is equal to 0, as a value of the steering angle obtained at a time of straight running of the vehicle, under the normal control; and controlling the steering reaction force, by defining a value of the steering angle set according to the second target turning angle, as the value of the steering angle at which the steering reaction force is equal to 0, under the automatic turning control.
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Specification