Patent ID: 7059691
Filing Date: 2006-06-13
Classification: B60L,B60T

Abstract:
1. A brake system for a vehicle, comprising: a first brake system that mechanically applies a braking force to wheels according to a master cylinder hydraulic pressure outputted from a master cylinder which receives a brake manipulation force of a driver; and a second brake system that applies a braking force to other wheels according to at least a braking state of the first brake system; a regenerative brake apparatus that applies a braking force, by converting rotational energy of wheels into electric energy and by storing the electric energy in a battery, to the wheels which receive the braking force from one of the first brake system and the second brake system; a first braking force calculating section that calculates the braking force of the first brake system from the braking state of the first brake system; a demand deceleration calculating section that calculates a vehicle demand deceleration from the braking state of the first brake system; a target braking force and regenerative braking force calculating section that calculates a target braking force of the second brake system and a regenerative braking force of the regenerative brake apparatus from the braking force of the first brake system and the vehicle demand deceleration so that the vehicle demand deceleration is achieved by the braking force of the first brake system, the target braking force and the regenerative braking force; a target braking force and regenerative braking force correcting section that obtains a corrected target braking force and a corrected regenerative braking force by correcting the target braking force and the regenerative braking force so that a braking force distribution to a front axle and a rear axle of the vehicle does not generate a rear wheel lock prior to a front wheel lock; a second brake system controlling section that controls the second brake system so as to generate the corrected target braking force; and a regenerative brake apparatus controlling section that controls the regenerative brake apparatus so as to generate the corrected regenerative braking force.