초록 ▼

An anti-skid brake control system two mutually different mode for projecting the vehicle body speed representative data. In the first mode, the vehicle body speed representative data is derived on the basis of an instantaneous wheel speed data which is latched upon initiation of vehicular braking op

An anti-skid brake control system two mutually different mode for projecting the vehicle body speed representative data. In the first mode, the vehicle body speed representative data is derived on the basis of an instantaneous wheel speed data which is latched upon initiation of vehicular braking operation or upon detection of vehicular braking deceleration, and an integrated value of a longitudinal acceleration indicative signal. On the other hand, in a second mode, the vehicle body speed representative data is derived on the basis of the initially latched instantaneous wheel speed data and a fixed value of wheel deceleration gradient data. A first vehicle body speed representative data derived through the first mode of operation and a second vehicle body speed representative data derived through the second mode of operation are selectively used as the vehicle body speed representative data.

대표청구항 ▼

An anti-skid brake control system for an automotive vehicle, comprising: a braking circuit connecting a pressurized fluid source to a wheel cylinder for each of front and rear wheels for building up braking pressure; a pressure control valve means, disposed in said braking circuit, for controlling b

An anti-skid brake control system for an automotive vehicle, comprising: a braking circuit connecting a pressurized fluid source to a wheel cylinder for each of front and rear wheels for building up braking pressure; a pressure control valve means, disposed in said braking circuit, for controlling braking pressure in said wheel cylinder, said pressure control valve means operable for increasing braking pressure in said wheel cylinder in a first mode and decreasing braking pressure in said wheel cylinder in a second mode; first sensor for monitoring rotation speed of associated one of the front and rear wheels for producing a wheel speed indicative signal; second sensor for monitoring vehicular deceleration magnitude of a vehicle body for producing a deceleration magnitude indicative signal; third means for latching said wheel speed indicative signal upon initiation of a skid control cycle and deriving a first vehicle body speed representative data on the basis of said latched wheel speed indicative signal value and an integrated value of said deceleration magnitude indicative signal; fourth means for latching said wheel speed indicative signal upon initiation of a skid control cycle and deriving a second vehicle body speed representative data on the basis of said latched wheel speed indicative signal and an integrated value of a predetermined fixed deceleration gradient representative value; fifth means for selectively outputting one of said first and second vehicle body speed representative data; and sixth means for producing a control signal for operating said pressure control valve means between said first and second mode positions according to a predetermined schedule on the basis of said wheel speed indicative signal and said selected vehicle body speed representative data.