ABS can brake in car in the process of automatic control and adjust the wheel brake force,prevent braking process in the car wheel "lock",and keep the wheel of biggest adhesion coefficient,and get the best braking effect,namely the shortest braking distance,the smallest lateral sliding and the best braking to performance,so ABS is a kind of effective vehicle safety device.Taking a car as the research object,this paper researches on car ABS.Mainly introduces the wheels of the antilock brake systems definition,development history and structure,and the working principle of ABS analysis,it introduces the ABS system of electronic control part of the composition and principle of the wheel speed sensor,hydraulic control device structure and principle,as well as to the ABS threshold control method for analysis.
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