Fluid-pressure and analogous brake systems – Speed-controlled – With yaw control
Patent
1996-10-02
1998-11-24
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
With yaw control
B60T 832
Patent
active
058397990
ABSTRACT:
A behavior control device of a vehicle, comprising: means for detecting vehicle speed; means for detecting steering angle of front left and front right wheels; means for detecting slip angle of at east one of rear left and rear right wheels; means for calculating a target value of the slip angle based upon parameters related with turn behavior of the vehicle including at least the vehicle speed detected by the vehicle speed detecting means and the steering angle detected by the steering angle detecting means; and control means for calculating a value of yaw moment to be applied to the vehicle body such that, when the calculated value of yaw moment is applied to the vehicle, the slip angle detected by the slip angle detecting means conforms to the target value thereof calculated by the target slip angle calculation means. The control means operates the brake means so as to variably brake a selected one or ones of the wheels to apply the calculated value of the yaw moment to the vehicle body. The behavior control device may further comprise means for calculating a liability of the vehicle body to spin for producing a spin value which generally increases along with increase of the spin liability; and means for calculating a liability of the vehicle body to drift-out for producing a drift-out value which generally increases along with increase of the drift-out liability, so that control means modifies the calculated value of the yaw moment applied to the vehicle body according to at least one of the spin value and the drift-out value such that the yaw moment applied to the vehicle body is greater as the spin value or the drift-out value is greater.
REFERENCES:
patent: 5079708 (1992-01-01), Brown
patent: 5640324 (1997-06-01), Inagaki
patent: 5648903 (1997-07-01), Liubakka
Bartz C. T.
Oberleitner Robert J.
Toyota Jidosha & Kabushiki Kaisha
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