Roll over stability control for an automotive vehicle
First Claim
1. A stability control system for an automotive vehicle comprising:
- a speed sensor;
a lateral acceleration sensor;
a roll rate sensor;
a yaw rate sensor; and
a controller coupled to said speed sensor, said lateral acceleration sensor, said roll rate sensor, said yaw rate sensor, said controller determining a roll angle estimate in response to lateral acceleration, roll rate, vehicle speed, and yaw rate, and changing a tire force vector in response to the relative roll angle estimate.
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Accused Products
Abstract
A stability control system 24 for an automotive vehicle as includes a plurality of sensors 28-37 sensing the dynamic conditions of the vehicle and a controller 26 that controls a distributed brake pressure to reduce a tire moment so the net moment of the vehicle is counter to the roll direction. The sensors include a speed sensor 30, a lateral acceleration sensor 32, a roll rate sensor 34, and a yaw rate sensor 20. The controller 26 is coupled to the speed sensor 30, the lateral acceleration sensor 32, the roll rate sensor 34, the yaw rate sensor 28. The controller 26 determines a roll angle estimate in response to lateral acceleration, roll rate, vehicle speed, and yaw rate. The controller 26 changes a tire force vector using brake pressure distribution in response to the relative roll angle estimate.
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Citations
28 Claims
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1. A stability control system for an automotive vehicle comprising:
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a speed sensor;
a lateral acceleration sensor;
a roll rate sensor;
a yaw rate sensor; and
a controller coupled to said speed sensor, said lateral acceleration sensor, said roll rate sensor, said yaw rate sensor, said controller determining a roll angle estimate in response to lateral acceleration, roll rate, vehicle speed, and yaw rate, and changing a tire force vector in response to the relative roll angle estimate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling roll stability of a vehicle comprising:
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determining a yaw rate for the vehicle;
determining a roll rate for the vehicle;
determining a lateral acceleration for the vehicle;
determining vehicle speed; and
generating a tire moment in response to yaw rate, roll rate, lateral acceleration and vehicle speed so that a net moment on the vehicle is counter to a roll direction. - View Dependent Claims (8, 9, 10, 11)
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12. A method of controlling roll stability of a vehicle comprising the steps of:
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determining a roll angle estimate in response to lateral acceleration, roll rate, vehicle speed, and yaw rate; and
determining a tire force vector in response to the relative roll angle estimate. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A stability control system for an automotive vehicle comprising:
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a speed sensor;
a lateral acceleration sensor;
a roll rate sensor;
a yaw rate sensor; and
a controller coupled to said speed sensor, said lateral acceleration sensor, said roll rate sensor, said yaw rate sensor, said controller determining a roll angle estimate in response to lateral acceleration, roll rate, vehicle speed, and yaw rate, and changing a tire force vector in response to the relative roll angle estimate, said tire force vector by determining a brake pressure distribution. - View Dependent Claims (25, 26, 27, 28)
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Specification