초록 ▼

An anti-skid brake control system monitors wheel deceleration during a period from a timing at which vehicular braking operation is initiated to a timing at which anti-skid brake control becomes active. Because the magnitude of wheel deceleration during the period set forth above is approximately in

An anti-skid brake control system monitors wheel deceleration during a period from a timing at which vehicular braking operation is initiated to a timing at which anti-skid brake control becomes active. Because the magnitude of wheel deceleration during the period set forth above is approximately inversely proportional to a road friction, the difference of deceleration can be a road friction indicative data. A vehicle body deceleration gradient data for the first skid control cycle is approximated or projected on the basis of the road friction indicative data so as to derive a projected vehicle body speed indicative data and a target wheel speed indicative data for the first skid control cycle.

대표청구항 ▼

An anti-skid brake control system for an automotive vehicle, comprising: a braking circuit including a wheel cylinder for generating braking force for decelerating a vehicular wheel in response to a manual braking operation; a pressure control valve disposed within said braking circuit for controlli

An anti-skid brake control system for an automotive vehicle, comprising: a braking circuit including a wheel cylinder for generating braking force for decelerating a vehicular wheel in response to a manual braking operation; a pressure control valve disposed within said braking circuit for controlling braking force to be generated in said wheel cylinder depending upon the vehicular braking condition, said pressure control valve increasing said braking force in said wheel cylinder in a first mode and decreasing said braking force in said wheel cylinder in a second mode; a wheel speed data generating means for monitoring rotation speed of said vehicular wheel to produce a wheel speed indicative data; first means deriving a vehicular braking condition on the basis of said wheel speed indicative data for outputting a control signal for controlling operational mode of said pressure control valve means according to a predetermined schedule in each skid control cycle, in which the pressure control valve operational mode is selected between said first mode and second mode according to the predetermined schedule, and second means responsive to initiation of vehicular braking operation for monitoring variation of said wheel speed indicative data for detecting friction level of a road surface for adjusting variation rate of said braking pressure in said wheel cylinder in said second mode.