Antilock Break System
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Antilock Braking System
Introduction
In a recent Canadian Automobile Association survey of some 1700 members, 66% correctly associated ABS with vehicle stability in an emergency, and 53% correctly stated that ABS allows the driver to steer while braking.
ABS is an abbreviation for Anti-lock Braking System. It was designed to help the driver maintain some steering ability and avoid skidding while braking. ABS did not appear in road cars until 1966, when Jensen FF installed a system developed by Dunlop. That system, called Maxaret, It did not employ computers as well as wheel speed sensors. It just employed electronic sensors to avoid locking the disc brakes.
People often think that optimal braking is implemented by completely locking all the wheels. but, the laws of physics tells us that the coefficient of friction between the ground surface and a static object is always greater than a moving object. If the tyres are sliding on the road surface, the friction between road and wheel will not be maximum. Therefore, the maximum braking occurs when the wheels are braked up to the level that the wheels just do not slide...