| 摘要 |
PURPOSE:To smooth control of intensification, by a method wherein a brake oil pressure is reduced in a pressure during detection of lock of a wheel, and thereafter, when a brake force is restored through intensification, an oil pressure during intensification is increased in a stepped manner from a pressure reduction completion oil pressure toward a pressure reduction starting oil pressure so that a difference is reduced by 1/2 at one step. CONSTITUTION:A title device has a computer 2 which calculates wheel slip rate reference speeds VH and VL through estimation of a wheel acceleration and a car body speed from a wheel speed VW detected by a wheel speed sensor 1. The reference speeds VH and VL and wheel reference acceleration G2 and G1 are compared with the wheel speed VW and a wheel acceleration by means of a control circuit 3 to output a control signal of an oil pressure. During detection of lock of a wheel, a brake oil pressure is automatically reduced in a pressure, and thereafter, control is effected so as to restore a brake force through intensification of an oil pressure. In this case, a pressure reduction starting oil pressure PS and a pressure reduction completion oil pressure PE forms a reference oil pressure, and an intensifying time is divided into plural cycles, the desired oil pressure P of a n-th cycle is set to a value obtained by PO=PE +(PS-PE)(1-2<-n>) to perform gradual intensification.
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