Antiskid controller

Abstract

Abstract PURPOSE: To perform an optimum antiskid control according to the road condition by detecting the peak valve of the friction coefficient of wheels in each skid cycle and successively setting a desired value for skid control of the wheels based on the wheel speeds at said peak values. CONSTITUTION: When the brake is applied at a time t 0 , antiskid control is started and a wheel speed VW detected by means of a wheel-speed detector 3 shows a skid cycle in Fig. A. Therefore, a friction coefficient detector 1 detects and outputs a friction coefficient shown in Fig. B, and a decision means 2 senses peak values of the friction coefficient at times t 1 , t 2 ... seccessively and outputs a decision signal eS. When the peak values have been sensed, a desired wheel speed generator 4 successively extracts wheel speeds VW 1 , VW 2 ... corresponding to the timing of the peak value decision signal eS, and generates a desired wheel-speed VWO made by linking the extracted wheel-speeds VW 1 , VW 2 ... into a straight line shown in Fig. C. Then the wheels are skid-controlled so that the wheel speed agrees with the desired value. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Toshiro Matsuda

Bibliographic Details