ANTI-SKID CONTROL DEVICE AND AUTOMATIC BRAKE CONTROL DEVICE

PROBLEM TO BE SOLVED: To prevent differential pressure of W/C pressures of right and left front wheels from becoming unsuppressable in a certain range due to individual variation in capability for W/C pressure boosting of a boost control valve, and also to prevent the spin. SOLUTION: The anti-skid control device gradually increase a W/C pressure of a wheel at a high μ road side by repeating a cycle in which a first differential pressure Plow is kept for a first period Tlow and a second differential pressure Phigh is kept for a second period Thigh in the boost control valves 17, 37 corresponding to front wheels FR, FL on the high μ road side. Variation in the capability for W/C pressure boosting is thereby suppressed, and the differential pressure of the W/C pressures between the right and left front wheels FR, FL is also suppressed in the certain range. Thus, yaw torque applied to a vehicle is suppressed, and therefore, the spin is prevented. COPYRIGHT: (C)2009,JPO&INPIT