Controlling a steering system in a motor vehicle
First Claim
1. A method for controlling a steering system in a motor vehicle, wherein the steering system converts a steering wheel angle to a steering angle of a steered wheel of the motor vehicle in order to control a yaw rate of the motor vehicle, and the method comprises the following steps:
- sampling of oscillations of the steering wheel angle and of the yaw rate;
detecting a predetermined phase difference between the oscillation of the steering wheel angle and the oscillation of the yaw rate; and
increasing damping in the conversion of the steering wheel angle to the steering angle, wherein the steering system comprises a servo steering system for converting a steering wheel force to an amplified steering force at the steered wheel, and wherein the increased damping is brought about by increasing a counterforce opposed to the steering wheel force.
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Accused Products
Abstract
A method for controlling a steering system in a motor vehicle, which system is designed to convert a steering wheel angle to a steering angle of a steered wheel of the motor vehicle in order to control a yaw angle of the motor vehicle. The method comprises steps of sampling oscillations of the steering wheel angle and of the yaw rate, detecting a predetermined phase difference between the oscillation of the steering wheel angle and the oscillation of the yaw rate, and increasing damping in the conversion of the steering wheel angle to the steering angle.
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Citations
8 Claims
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1. A method for controlling a steering system in a motor vehicle, wherein the steering system converts a steering wheel angle to a steering angle of a steered wheel of the motor vehicle in order to control a yaw rate of the motor vehicle, and the method comprises the following steps:
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sampling of oscillations of the steering wheel angle and of the yaw rate; detecting a predetermined phase difference between the oscillation of the steering wheel angle and the oscillation of the yaw rate; and increasing damping in the conversion of the steering wheel angle to the steering angle, wherein the steering system comprises a servo steering system for converting a steering wheel force to an amplified steering force at the steered wheel, and wherein the increased damping is brought about by increasing a counterforce opposed to the steering wheel force. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A control device for controlling a steering system in a motor vehicle, wherein the steering system converts a steering wheel angle to a steering angle of a steered wheel of the motor vehicle in order to control a yaw angle of the motor vehicle, and the control device comprises the following elements:
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a first sampling device for sampling an oscillation of the steering wheel angle; a second sampling device for sampling an oscillation of the yaw rate; a processing device for determining a phase difference between the oscillation of the steering wheel angle and the oscillation of the yaw rate and for determining whether the phase difference determined exceeds a predetermined threshold value; and a damping device for increasing the damping in the conversion of the steering wheel angle to the steering angle upon a determination that the phase difference determined exceeds a predetermined threshold value, wherein the steering system comprises a servo steering system for converting a steering wheel force to an amplified steering force at the steered wheel, and wherein the increased damping is brought about by increasing a counterforce opposed to the steering wheel force.
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Specification