| 摘要 |
PURPOSE: A control method of an anti-lock brake system is provided to control a brake conveniently by calculating the reference speed of each wheel individually, and to improve stability and reliability by controlling the brake system accurately according to the reference value. CONSTITUTION: Wheel speed is detected with a wheel sensor(S100), and the wheel speed is calculated according to the detected value(S110). The reference speed of a front left wheel is calculated with adding front right wheel speed to average rear wheel speed and dividing by two(S120), and the front left wheel speed is compared with the reference speed(S130). A microcomputer increases hydraulic pressure of the front left wheel in case of the front left wheel speed to more than the reference speed, and decreases pressure in case of the front left wheel speed to be lower than the reference value(S140,S131). The reference speed of the front right wheel is calculated with adding front left wheel speed to average rear wheel speed and dividing by 2(S150). The rear left wheel reference speed is calculated with doubling rear right wheel speed, adding average front wheel speed, and dividing by 3, and the rear right wheel reference speed is calculated with doubling rear left wheel speed, adding average front wheel speed and dividing by 3. The anti-lock brake system is controlled accurately with setting the reference speed according to each wheel individually.
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