Roll stability control system for an automotive vehicle using coordinated control of anti-roll bar and brakes
First Claim
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1. A roll stability control system for an automotive vehicle comprising:
- an active anti-roll bar system;
a rollover sensing system generating a roll attitude signal indicative of an impending rollover of the vehicle; and
a controller coupled to the active anti-roll bar system and the rollover sensing system, said controller controlling the active anti-roll bar to prevent the vehicle from rolling over in response to the roll attitude signal.
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Abstract
A roll stability control system (18) for an automotive vehicle (10) includes an active anti-roll bar system (62) and a rollover sensor (40) that generates a roll attitude signal indicative of a pending rollover of the vehicle. A controller (26) controls the active anti-roll bar system (62) to prevent the vehicle from rolling over in response to the roll attitude signal. The controller (26) may also control a brake system (60). The brake system may be used in addition to the active anti-roll bar system to prevent rollover of the vehicle.
13 Citations
21 Claims
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1. A roll stability control system for an automotive vehicle comprising:
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an active anti-roll bar system; a rollover sensing system generating a roll attitude signal indicative of an impending rollover of the vehicle; and a controller coupled to the active anti-roll bar system and the rollover sensing system, said controller controlling the active anti-roll bar to prevent the vehicle from rolling over in response to the roll attitude signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a roll stability control system for an automotive vehicle having an active anti-roll bar comprising:
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determining a roll attitude signal indicative of an impending rollover of the vehicle; and controlling the active anti-roll bar system to prevent the vehicle from rolling over in response to the roll attitude signal. - View Dependent Claims (9, 10, 11)
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12. A method of operating a roll stability control system for an automotive vehicle having an active anti-roll bar and a brake system comprising:
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determining a roll attitude signal indicative of an impending rollover of the vehicle; when the roll attitude is between a first and second threshold, controlling the active anti-roll bar system to reduce a rolling moment of the vehicle; and when the roll attitude is above a second threshold, controlling the active anti-roll bar system and the brake system to reduce a rolling moment of the vehicle. - View Dependent Claims (13, 14)
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15. A method of controlling roll stability of an automotive vehicle having a front and rear brake system, and a front and rear active anti-roll bar system comprising the steps of:
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determining a roll angle estimate in response to roll sensing system sensors; controlling a front and rear active anti-roll bar in response to the roll angle estimate; and controlling a front and rear brake controller in response to the relative roll angle estimate to provide a predetermined tire force vector. - View Dependent Claims (16, 17, 18)
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19. An automotive vehicle comprising:
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an antilock brake controller generating an antilock brake signal; a traction controller generating a traction control brake signal; an active anti-roll bar system having a front active anti-roll bar actuator and a rear active anti-roll bar actuator; a front brake actuator; a rear brake actuator; a roll attitude sensing system for producing a rollover signal in response to an impending rollover of the vehicle; and a rollover controller coupled to said rollover sensor, said active anti-roll bar system, and said front brake actuator and rear brake actuator, said rollover controller having brake pressure priority logic generating a brake actuator signal in response to said rollover signal, said antilock brake signal, and said traction control brake signal, said controller generating a front and/or rear active anti-roll bar actuator signals in response to said rollover signal, said active anti-roll bar actuator signals controlling said front and/or rear active anti-roll bar actuators and said brake actuator signal controlling said brake actuator to prevent the vehicle from rolling over. - View Dependent Claims (20, 21)
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Specification