| 摘要 |
With use of electric power supplied from a vehicle power source, an electric motor is controlled based on a movement amount of an input rod by a master-pressure control device. A primary piston is thrust through an intermediation of a hall-screw mechanism to generate a brake fluid pressure in a master cylinder. The brake fluid pressure generated by the master cylinder is fed-back by an input piston through an intermediation of the input rod to a brake pedal. When system end conditions such as the OFF state of the ignition switch are satisfied, the master-pressure control device executes power-supply interruption control to interrupt the vehicle power source and supply necessary electric power from an auxiliary power source, to thereby continue brake control with the electric power stored in the auxiliary power source.
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