Method of controlling traveling stability of vehicle
First Claim
1. A method of controlling traveling stability of a vehicle, comprising the steps of:
- setting driver'"'"'s desired yaw rates on various road surface conditions using a steering wheel angle and a reference speed of the vehicle while turning;
judging a road surface condition on which the vehicle is traveling, by comparing lateral acceleration of the vehicle, which is estimated using the reference vehicle speed and a preset yaw rate on a preset reference road surface condition, with actual lateral acceleration measured by a lateral acceleration sensor;
determining one of the driver'"'"'s desired yaw rates corresponding to the judged road surface condition as a reference yaw rate, and determining whether the vehicle is understeered or oversteered by comparing the determined reference yaw rate with an actual yaw rate measured by a yaw rate sensor; and
controlling braking force and driving force according to the determination result.
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Accused Products
Abstract
Disclosed herein is a method of controlling traveling stability of a vehicle. In the present invention, a driver'"'"'s desired yaw rate is estimated using a steering wheel angle and a reference speed of the vehicle while turning. The condition of a road surface the vehicle is traveling on is judged by comparing lateral acceleration of the vehicle, estimated using the estimated yaw rate and a reference vehicle speed, with lateral acceleration actually measured by a lateral acceleration sensor. A driver'"'"'s desired reference yaw rate is determined according to the judged road surface condition. It is determined whether a vehicle is understeered or oversteered by comparing the determined reference yaw rate with an actual yaw rate measured by a yaw rate sensor. According to the determined result, braking force and driving force of the vehicle are controlled, thus obtaining excellent vehicle stability.
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Citations
5 Claims
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1. A method of controlling traveling stability of a vehicle, comprising the steps of:
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setting driver'"'"'s desired yaw rates on various road surface conditions using a steering wheel angle and a reference speed of the vehicle while turning;
judging a road surface condition on which the vehicle is traveling, by comparing lateral acceleration of the vehicle, which is estimated using the reference vehicle speed and a preset yaw rate on a preset reference road surface condition, with actual lateral acceleration measured by a lateral acceleration sensor;
determining one of the driver'"'"'s desired yaw rates corresponding to the judged road surface condition as a reference yaw rate, and determining whether the vehicle is understeered or oversteered by comparing the determined reference yaw rate with an actual yaw rate measured by a yaw rate sensor; and
controlling braking force and driving force according to the determination result. - View Dependent Claims (2, 3, 4, 5)
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Specification