Brake control method based on a linear transfer function reference model
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United States of America Patent
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Aug 3, 1999
Grant Date -
N/A
app pub date -
Sep 24, 1998
filing date -
Sep 24, 1998
priority date (Note) -
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Abstract
An active brake control method including an improved method of developing the desired state variables, enabling the system designer to specify the damping ratio and the un-damped natural frequency of desired vehicle performance. The desired state variables are determined by converting a linear time domain model into a transfer function model and solving for the lateral velocity and yaw rate as a function of the driver steering angle, the damping ratio, the un-damped natural frequency of the vehicle, and the transfer function zeros. The damping ratio, the un-damped natural frequency of the vehicle, and the transfer function zeros may either be computed or specified in a look-up table as a function of vehicle speed. This allows the system designer to provide increased damping at high vehicle speeds, for example.
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