Antiskid brake device

An antiskid brake device for use with wheeled vehicles comprising a wheel speed detector detecting the peripheral speed of a wheel in the form of a wheel speed signal (Uwi), a vehicle speed detector detecting the speed of a vehicle in the form of a vehicle speed signal (U), means for setting a reference wheel speed signal (U.sub.R) for comparison with said wheel speed signal (Uwi) on the basis of said vehicle speed signal (U), and comparator means for comparing said wheel speed signal (Uwi) with said reference wheel speed signal (U.sub.R) for controlling brake torque applied to the wheel during braking, said means for setting the reference wheel speed signal (U.sub.R) comprising an input section for receiving, as an input signal, said vehicle speed signal (U) from said vehicle speed detector, a logical operation section for setting a slip rate (.lambda.) of the wheel such that the slip rate is lower when said vehicle speed signal (U) is larger than a prescribed value than when said vehicle speed signal (U) is less than said prescribed value, said logical operation section including means for adding said slip rate (.lambda.) to said vehicle speed signal (U) for determination of said reference wheel speed signal (U.sub.R), and an output section for delivering, as an output signal, said reference wheel speed signal (U.sub.R) as determined by said logical operation section.