Fluid-pressure and analogous brake systems – Speed-controlled – With yaw control
Patent
1998-08-20
2000-06-27
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
With yaw control
303147, 303140, 701 72, B60T 832
Patent
active
060798009
ABSTRACT:
An improved active brake control for carrying out a desired wheel speed differential for enhanced vehicle lateral stability while maintaining suitable front-to-rear brake pressure proportioning. During driver braking, the target speeds for the wheels of the driven axle during active brake control are determined as a combined function of the wheel speeds of the un-driven axle and the desired wheel speed differential. Specifically, the target speeds for the driven wheels are determined according to the measured speeds of the corresponding un-driven wheels, and one of the target speeds is reduced to reflect the desired wheel speed differential. If the desired wheel speed differential is designed to produce a clockwise yaw moment, the target speed for the driven wheel on the right-hand side of the vehicle is reduced; if the differential is designed to produce a counter-clockwise yaw moment, the target speed for the driven wheel on the left-hand side of the vehicle is reduced. As a result of the control, the stability enhancing effect of the ABC is achieved without disturbing the ideal front-to-rear brake effort proportioning.
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Chin Yuen-Kwok
Chin-Woei Lin William
Ghoneim Youssef Ahmed
Sidlosky David Michael
General Motors Corporation
Kramer Devon
Oberleitner Robert J.
Simon Anthony Luke
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