Turn control apparatus for a motor vehicle equipped with antiskid braking system
First Claim
1. A turn control apparatus for a motor vehicle, the vehicle having a set of wheels including an outside front wheel and an inside rear wheel as viewed in a turning direction of said vehicle, and equipped with an antiskid braking system, comprising:
- detection means for detecting a kinetic condition of said vehicle;
turning condition determining means for determining whether the vehicle is turning in an understeer condition or an oversteer condition based on an actual yaw rate and a required yaw moment;
computation means for computing a required control amount of a braking force to be applied to each of said wheels such that a target slip ratio for each of said wheels coincides with an actual slip ratio in order to match an actual yaw rate of said vehicle with the target yaw rate;
first determining means for determining a condition prior to an activation of said antiskid braking system;
correction means for correcting the target slip ratio for each of said wheels to be controlled, when the condition prior to the activation of said antiskid braking system is determined, based on said computed required control amount, such that a target slip ratio of said outside front wheel is decreased and a target slip ratio of said inside rear wheel is increased when said vehicle is running in the understeer condition, and the target slip ratio of said outside front wheel is increased and the target slip ratio of said inside rear wheel is decreased when said vehicle is running in the oversteer condition;
second determination means for determining whether an operation of said antiskid braking system has been initiated; and
control execution means for activating said antiskid braking system based on said corrected target slip ratio when said determination means determines that the operation of said antiskid braking system has been initiated.
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0 Petitions
Accused Products
Abstract
A turn control apparatus for a motor vehicle comprises an arithmetic operation section for acquiring a correction amount for the target slip ratio of a target wheel to be controlled based on the required yaw moment of the vehicle in a situation where an antiskid braking system (ABS) should be activated, a computing section for computing the target slip ratio upon reception of the correction amount from the arithmetic operation section, and a section for acquiring actuation modes and pulse widths for inlet and outlet valves for wheel brakes of the individual wheels, based on the target slip ratio when the ABS is in operation.
59 Citations
10 Claims
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1. A turn control apparatus for a motor vehicle, the vehicle having a set of wheels including an outside front wheel and an inside rear wheel as viewed in a turning direction of said vehicle, and equipped with an antiskid braking system, comprising:
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detection means for detecting a kinetic condition of said vehicle; turning condition determining means for determining whether the vehicle is turning in an understeer condition or an oversteer condition based on an actual yaw rate and a required yaw moment; computation means for computing a required control amount of a braking force to be applied to each of said wheels such that a target slip ratio for each of said wheels coincides with an actual slip ratio in order to match an actual yaw rate of said vehicle with the target yaw rate; first determining means for determining a condition prior to an activation of said antiskid braking system; correction means for correcting the target slip ratio for each of said wheels to be controlled, when the condition prior to the activation of said antiskid braking system is determined, based on said computed required control amount, such that a target slip ratio of said outside front wheel is decreased and a target slip ratio of said inside rear wheel is increased when said vehicle is running in the understeer condition, and the target slip ratio of said outside front wheel is increased and the target slip ratio of said inside rear wheel is decreased when said vehicle is running in the oversteer condition; second determination means for determining whether an operation of said antiskid braking system has been initiated; and control execution means for activating said antiskid braking system based on said corrected target slip ratio when said determination means determines that the operation of said antiskid braking system has been initiated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification