System for driving stability control during travel through a curve
First Claim
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1. A system for improving the driving stability of a vehicle during travel through a curve, comprising:
- means for measuring a yaw rate of the vehicle;
means for calculating a desired yaw rate;
means for determining a difference between the desired yaw rate and the measured yaw rate;
situation recognition means for determining whether the vehicle is travelling in a curve, and whether the vehicle is travelling in reverse; and
logic means responsive to the difference determining means and the situation recognition means for initiating a corrective yawing moment if the difference exceeds a predetermined threshold value and the vehicle is not traveling in reverse.
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Abstract
A system for improving the driving stability of a vehicle during travel through a curve is provided. The system includes a sensor for measuring the actual yaw rate of the vehicle, and a facility for calculating a desired yaw rate. The difference between the desired yaw rate and the measured yaw rate is determined. A situation recognition facility determines whether the vehicle is travelling in a curve, and whether the vehicle is travelling in reverse. A logic initiates a corrective yawing moment if the difference exceeds a predetermined threshold value and the vehicle is not traveling in reverse.
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8 Claims
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1. A system for improving the driving stability of a vehicle during travel through a curve, comprising:
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means for measuring a yaw rate of the vehicle; means for calculating a desired yaw rate; means for determining a difference between the desired yaw rate and the measured yaw rate; situation recognition means for determining whether the vehicle is travelling in a curve, and whether the vehicle is travelling in reverse; and logic means responsive to the difference determining means and the situation recognition means for initiating a corrective yawing moment if the difference exceeds a predetermined threshold value and the vehicle is not traveling in reverse. - View Dependent Claims (2, 3, 4)
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5. In a device for controlling the yawing moment of a four-wheel motor vehicle during travel through a curve, with a vehicle reference model, which calculates the deviation of a measured yaw rate from a calculated desired yaw rate, and with an activation logic unit, which induces a yawing moment control in certain driving situations when this deviation exceeds a certain threshold, the improvement comprising:
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a situation recognition means for determining and sending information to the activation logic unit at least on whether the vehicle is traveling through a curve and whether the vehicle is traveling in a reverse direction, and the activation logic unit uses the information to determine whether to initiate yawing moment control, and the activation logic unit does not initiate any yawing moment control during reverse travel. - View Dependent Claims (6, 7)
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8. In a device for controlling the yawing moment of a four-wheel motor vehicle during travel through a curve, including a vehicle reference model which calculates the deviation of a measured yaw rate from a calculated desired yaw rate, and an activation logic unit which induces a yawing moment control in certain driving situations when this deviation exceeds a certain threshold, the improvement comprising:
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situation recognition means for sending information to the activation logic unit at least on whether the vehicle is traveling through a curve, said situation recognition means including means for determining travel through a curve based on a measured lateral acceleration only when a steering angle value exceeding a preset minimum threshold is measured.
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Specification