초록 ▼

An anti-skid brake control system employs a technique for correcting a longitudinally based vehicular speed variation gradient by a road slop dependent correction value. The road slop dependent correction value is derived on the basis of an assumed road slop condition which is assumed on the basis o

An anti-skid brake control system employs a technique for correcting a longitudinally based vehicular speed variation gradient by a road slop dependent correction value. The road slop dependent correction value is derived on the basis of an assumed road slop condition which is assumed on the basis of magnitude of increase of the braking pressure.

대표청구항 ▼

An anti-skid brake control system for an automotive brake system comprising: a hydraulic brake circuit comprising means for building up braking fluid pressure according to operational magnitude of a manually operable braking member and braking force generating means associated with a vehicular wheel

An anti-skid brake control system for an automotive brake system comprising: a hydraulic brake circuit comprising means for building up braking fluid pressure according to operational magnitude of a manually operable braking member and braking force generating means associated with a vehicular wheel for generating a braking force to decelerate said vehicular wheel; pressure adjusting means, disposed within said hydraulic circuit, for adjusting pressure of a working fluid to be delivered to said braking force generating means, said pressure adjusting means being operable at least in a first mode for increasing braking pressure in said braking force generating means and in a second mode for decreasing said braking pressure in said braking force generating means; first sensor means for monitoring rotation speed of said vehicular wheel to produce a wheel speed indicative sensor signal value representative of rotation speed of said vehicular wheel; second sensor means for monitoring longitudinal acceleration exerted on a vehicular body by producing a longitudinal acceleration indicative sensor signal value; first means for detecting a predetermined vehicular braking condition satisfying a predetermined anti-skid brake control condition for initiating anti-skid control operation; second means for latching a first wheel speed indicative value corresponding to said wheel speed indicative sensor signal value at a predetermined timing in each skid cycle and for arithmetically deriving a vehicular deceleration indicative datum on the basis of said longitudinal acceleration indicative sensor signal value, and for driving a gradient of vehicular speed during vehicular deceleration on the basis of said longitudinal acceleration indicative sensor signal value; third means for deriving a projected vehicular speed representative datum based on said first wheel speed indicative value and utilizing said gradient of vehicular speed; and fourth means for controlling said pressure adjusting means between said first and second modes for maintaining said rotation speed of said vehicular wheel in a predetermined optimal relationship with said projected vehicular speed representative datum.