| 摘要 |
PROBLEM TO BE SOLVED: To consistently set the target rotational speed of a motor (corresponding to the target discharge flow rate of a pump) to an adequate value without being affected by the state of a road surface, in a control device of a motor for ABS control. SOLUTION: In this device, the target discharge flow rate qre of a hydraulic pump for pumping a brake fluid in a reservoir is determined to a larger value as DVsoc is larger based on the vehicle body deceleration DVsoc for control. DVsoc is, in principle, set to be a value DVsop subjected to peak hold processing to acquired vehicle body deceleration DVso. On the other hand, when the condition of jumping "highμto lowμ" reaches in which a road surface friction coefficient is reduced step by step, DVsoc is maintained at vehicle body deceleration DVsohi in a state of highμlarger than DVsop only for a subsequent corrective period T. DVsoc is thus corrected to be larger, and a target discharge flow rate qreq is corrected to be higher. As a result, the rotational speed of a motor is controlled to be larger, suppressing a "trend that the reservoir is filled with a brake fluid after the jump of highμto lowμ". COPYRIGHT: (C)2008,JPO&INPIT
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