Fluid-pressure and analogous brake systems – Speed-controlled – With yaw control
Patent
1998-11-19
2000-12-19
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
With yaw control
303139, B60T 860
Patent
active
061619051
ABSTRACT:
An improved vehicle active brake control based on an estimate of vehicle yaw rate and slip angle, wherein the estimate is based on a weighted average of two yaw rate values developed with two different estimation techniques. In general, the first estimate of yaw rate is based on the relative velocity of the un-driven wheels, and the second estimate is based on a measure of lateral acceleration. Confidence levels in each estimate are determined and used to form a third or preliminary yaw rate estimate based on a weighted average of the first and second estimates, and the third estimate is supplied to a closed-loop nonlinear dynamic observer which develops the final estimate of yaw rate, along with estimates of lateral velocity and side-slip angle.
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Hac Aleksander Boguslaw
Simpson Melinda Daniele
Butler Douglas C.
Delphi Technologies Inc.
DeVries Christopher
General Motors Corporation
Nguyen Xuan Lan
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