| 摘要 |
PROBLEM TO BE SOLVED: To obtain an electric parking brake system which appropriately copes with a voltage drop of a power source. SOLUTION: A processing for coping with a voltage drop is provided on a program for controlling the electric parking brake. A control content is stored in a storage variable X, the control content is inputted (S43) in an execution variable Y, and the control content is executed in a following processing. On the other hand, in S41 and S42, when it is determined to be in the voltage drop state, the processing (Y=0) for stopping an electric motor is performed and the control is stopped in S46 irrespective of the value of the storage variable X. In S47 to S50, the time when the control is stopped is measured, and the restarting of the control is blocked (S51) after the elapse of a setting time. When the voltage drop state is ended for a short time by the above processing, the control is restarted, but when it is continued for a long time, the electric parking brake system appropriately copes with the voltage drop by blocking the restart of the control. COPYRIGHT: (C)2009,JPO&INPIT
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