Brake control apparatus and method for controlling the same

摘要

A brake control apparatus obtains a required braking force using a hydraulic braking force in combination with a regenerative braking force. The brake control apparatus includes a hydraulic brake unit that controls the hydraulic braking force. When the deviation of an actual hydraulic pressure from a target pressure falls outside a permissible range (d), the hydraulic brake unit controls the actual hydraulic pressure in such a manner that the deviation falls within the permissible range. On the other hand, when the deviation is within the permissible range (d), the hydraulic brake unit maintains the actual hydraulic pressure. The hydraulic brake unit includes a control unit that detects timing (Ta) at which usage of the hydraulic braking force needs to be started to compensate for a deficiency from the required braking force, and that raises (r) the target pressure at the detected timing (ta).

主权项

1. A brake control apparatus that obtains a required braking force using a hydraulic braking force in combination with a regenerative braking force, comprising:
a hydraulic brake unit that controls the hydraulic braking force, wherein when a deviation of an actual hydraulic pressure from a target pressure falls outside a permissible range, the hydraulic brake unit controls the actual hydraulic pressure in such a manner that the deviation falls within the permissible range, whereas when the deviation is within the permissible range, the hydraulic brake unit maintains the actual hydraulic pressure, wherein the hydraulic brake unit includes a control unit that determines timing at which usage of the hydraulic braking force needs to be started to compensate for a deficiency from the required braking force, and that raises the target pressure at the determined timing or that executes pressure-increase promotion control so that the actual hydraulic pressure starts increasing at the determined timing wherein the control unit determines that usage of the hydraulic braking force is started, to compensate for the deficiency from the required braking force, when a state continues for a time that exceeds a determination reference time, the state being when an actual output value of the regenerative braking force is smaller than a required braking force that is prepared a predetermined time before detection of the actual output value, the predetermined time accounting for a time between the control unit preparing the required braking force and receiving the actual output value based on the required braking force.