COOPERATIVE CONTROL DEVICE OF COMPOSITE BRAKE

摘要

PROBLEM TO BE SOLVED: To provide a cooperative control device in which a sudden change of a large deceleration is suppressed even if regenerative braking covering a response delay of a friction brake at an early period of braking is canceled.;SOLUTION: A target braking torque tTtotal rises up depending on a pedal step from an instant t1 when a master cylinder pressure begins to be generated. A limited early regenerative braking torque is set to a target regenerative braking torque tTm during the time from the instant t1 to an instant t2 when the master cylinder pressure (friction brake torque) reaches a set value or more, in other words, during an initial time of braking when a response delay of the friction brake becomes a problem, and also the target braking torque tTtotal is achieved by a target friction brake torque tTb covering the deficit. This limited early regenerative braking torque has such a value that the deceleration of a vehicle never provides a driver with a sense of incongruity, even when the regenerative braking torque becomes zero from the early regenerative braking torque at a stretch by coming to cancel the regenerative braking.;COPYRIGHT: (C)2015,JPO&INPIT