Back to results
US 6,618,661 B2Granted
Road friction coefficients estimating apparatus for vehicle
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorMasaru Kogure
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorMasaru Kogure
Estimating the term…
A road friction coefficient estimating apparatus for a vehicle includes a high friction coefficient road reference value estimating section for calculating a high friction coefficient road reference yaw rate based on a vehicle motion model when the vehicle travels on a road surface with high friction coefficient, an actual value estimating section for calculating an actual yaw rate, a Lissajou figure processing section for forming a Lissajou's figure based on the high friction coefficient road reference yaw rate and the actual yaw rate and for calculating a gradient and area of this Lissajou's figure, a road friction coefficient estimating section for estimating a road friction coefficient based on the area of the Lissajou's figure when the gradient is in the neighborhood of 45 degrees and for estimating a road friction coefficient based on a lateral acceleration when the gradient is out of the neighborhood of 45 degrees.
A road friction coefficient estimating apparatus for a vehicle comprising:
A road friction coefficient estimating apparatus for a vehicle comprising:
A road friction coefficient estimator, comprising:
Dependencies are inferred from the claim text.