BRAKE CONTROL DEVICE FOR VEHICLE

摘要

A brake ECU110 memorizes a deceleration A of a vehicle body when a braking mode is shifted from a regenerative braking mode to a cooperative braking mode (S31). The brake ECU110 memorizes a deceleration B at the time of shifting to a friction braking mode, when the braking mode is shifted from the cooperative braking mode to a friction braking mode in a status that a brake operation is retained constant (S32 to S37). The brake ECU110 computes a deceleration ratio α by dividing the deceleration A by the deceleration B, and updates the deceleration ratio α (S39). The brake ECU110 corrects a target fluid pressure P* using this deceleration ratio α (P*=P*×α). Thereby, a fluctuation of the deceleration at the time of a transition of a braking mode can be suppressed.

主权项

1. A brake control device for a vehicle comprising:
a regenerative braking means for making a wheel generate a regenerative braking force by converting a kinetic energy of the rotating wheel into an electrical energy and collecting the electrical energy in a battery, a friction braking means for making a wheel generate a friction braking force by a friction using a friction member, and a mode switch means for shifting a braking mode from a regenerative braking mode which generates a required braking force according to an amount of a brake operation only by said regenerative braking force to a friction braking mode which generates said required braking force only by said friction braking force, wherein: a gap index acquisition means for acquiring a gap index which shows a gap of a correlation between a required braking force and an actually obtained deceleration of a vehicle body at the time of an execution of said friction braking mode from a basis which is a correlation between a required braking force and an actually obtained deceleration of the vehicle body at the time of an execution of said regenerative braking mode, and a braking force correction means for correcting a target value of said friction braking force or said regenerative braking force based on said gap index so that said gap decreases.