Method for road grade/vehicle pitch estimation
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United States of America Patent
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Mar 30, 2004
Grant Date -
Jul 10, 2003
app pub date -
Jan 7, 2002
filing date -
Jan 7, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A control system (13) for an automotive vehicle (10) includes a longitudinal accelerometer (24) that generates a longitudinal acceleration signal corresponding to a longitudinal acceleration of a center of gravity (COG) of the vehicle body. A lateral velocity sensor (22) generates a lateral velocity signal corresponding to the lateral velocity of the vehicle body. A controller (14) is coupled to the yaw rate sensor (18), the longitudinal accelerometer (24) and the lateral velocity sensor (22). The controller (14) determines a longitudinal speed from the longitudinal acceleration signal. The controller determines a vehicle pitch angle in response to the longitudinal speed, the yaw rate signal and the lateral velocity signal.
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