Brake steer vehicle dynamics control intervention
First Claim
1. A method of controlling brakes on a vehicle after sudden tire rupture, said vehicle including a plurality of wheels and brakes corresponding to said wheels, said brakes responding to a plurality of brake actuator signals and said brakes applying a braking torque to said wheels corresponding to said brake actuator signals, said method comprising, in combination, the steps of:
- generating a tire rupture signal indicative of whether a tire on said vehicle has ruptured;
generating a first trajectory signal corresponding to a desired trajectory of said vehicle;
generating a second trajectory signal corresponding to an actual trajectory of said vehicle in response to said tire rupture signal; and
comparing said first trajectory signal to said second trajectory signal and generating responsive brake actuator signals whereby the braking of said vehicle is selectively controlled to alter said actual trajectory of said vehicle.
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Accused Products
Abstract
An electronic controller applies a braking force to selected wheels when sudden tire rupture is detected. A tire rupture signal indicative of whether a tire on the vehicle has ruptured is generated. Signals corresponding to a desired trajectory of the and the actual trajectory of the vehicle are calculated. Corresponding brake actuator signals are generated and applied to appropriate brakes of the vehicle, controlling the actual trajectory of the vehicle.
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Citations
12 Claims
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1. A method of controlling brakes on a vehicle after sudden tire rupture, said vehicle including a plurality of wheels and brakes corresponding to said wheels, said brakes responding to a plurality of brake actuator signals and said brakes applying a braking torque to said wheels corresponding to said brake actuator signals, said method comprising, in combination, the steps of:
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generating a tire rupture signal indicative of whether a tire on said vehicle has ruptured; generating a first trajectory signal corresponding to a desired trajectory of said vehicle; generating a second trajectory signal corresponding to an actual trajectory of said vehicle in response to said tire rupture signal; and comparing said first trajectory signal to said second trajectory signal and generating responsive brake actuator signals whereby the braking of said vehicle is selectively controlled to alter said actual trajectory of said vehicle. - View Dependent Claims (2, 3)
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4. A method of controlling trajectory of a vehicle after sudden tire rupture, said vehicle including a right side and a left side, said right side including a right front portion with a first wheel and a first brake, and a right rear portion with a second wheel and a second brake, said first brake and said second brake comprising a right brake pair, said left side including a left front portion with a third wheel and a third brake, and a left rear portion with a fourth wheel and a fourth brake, said third brake and said fourth brake comprising a left brake pair, said method comprising, in combination, the steps of:
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generating a tire rupture signal indicative of whether a tire on any of the first wheel, second wheel, third wheel and fourth wheel has ruptured generating an actual trajectory value indicative of the trajectory of said vehicle in response to said tire rupture signal; generating a desired trajectory range indicative of a desirable trajectory of said vehicle; and responding to said actual target trajectory value being outside of said desired trajectory range by controlling the braking of one of said brake pairs. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A method of controlling braking on a vehicle after sudden tire rupture, said vehicle including a front portion and a rear portion and a right side and a left side, said left side including a left brake pair with a front brake and a rear brake, said right side including a right brake pair with a front brake and a rear brake, said method comprising, in combination, in response to detecting a rupture of a tire on a wheel at any said portion of the vehicle, the steps of:
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determining a selected brake pair corresponding to which of said left brake pair and said right brake pair should be selected; generating a first signal indicative of a desired torque correction on said front brake of said selected brake pair; generating a second signal indicative of a desired torque correction on said rear brake of said selected brake pair; generating a third signal indicative of a maximum brake torque correction on said front brake of said selected brake pair; generating a fourth signal indicative of a maximum brake torque correction on said rear brake of said selected brake pair; generating a first relational value having one of at least two preset values by comparing said first signal and said third signal; generating a second relational value having one of at least two preset values by comparing said second signal and said fourth signal; generating a first torque actuator signal and a second torque actuator signal corresponding to said first relational value and said second relational value, respectively; and controlling said selected brake pair by applying said first torque actuator signal to said front brake of said selected brake pair and applying said second torque actuator signal to said rear brake of said selected brake pair, whereby vehicle trajectory is controlled. - View Dependent Claims (11, 12)
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Specification