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An Experimental Study of an Anti-lock Brake System  

Kang, Sung-Hwang (Department of Automotive Engineering, Catholicsangji College)
Kim, Jae-Ho (Department of Mechanical Engineering, Kyungpook University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.14, no.5, 2006 , pp. 17-24 More about this Journal
Abstract
Anti-lock brake system(ABS) are designed to prevent wheel lock on all wheels of the vehicle by sensing wheel angular speed, processing the speed sensor signals in suitable digital electronic control circuits and comanding electrohydraulic actuators to control brake pressure. This study considers a control of ABS using wheel circumferential acceleration thresholds which avoids dangerous wheel locking due to excessive brake pressure during the vehicle braking and discusses the 3-channels, 3-sensors ABS system that employs "independent control" technique for the front wheels and "select low" technique for the rear wheels. The validities of the ABS such as vehicle stability, steerability and stopping distance during braking are assured through the vehicle tests on uniform asphalt straight roads.
Keywords
Anti-lock bake system(ABS); Slip ratio; Independent control technique; Select-low control technique; Reference speed; Wheel locking;
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