Antilock Braking Logic Threshold Control Algorithm Research

Automobile electro-technology mushrooming and popularizing, all kinds of using capability breaks through conventional limits of machine and tends towards the best state. As one kind of automobile electro-technology, Anti-lock Braking System (ABS) improves automobiles passablility, steering stability and initiative security by a long way on all types of adhesion road.This paper introduces detailedly how to exploit and study ABS method of logic gateway control. Firstly, through drawing the curve of connection of slippage rate and braking torture by vector space analytical method, unsteady and steady ultimate circle is gotten, then the boundary parameters of method of logic gateway is reached; through analyzing each tire loads and its variation of moving automobile, some notice on exploiting method of logic gateway control. Secondly measurement and dispose is studied in detailed, and the method of estimating reference velocity, ameliorated slope method is born. Thirdly algorithm of method of logic gateway control on high adhesion road, low adhesion road, bisect adhesion road and variational adhesion road is described detailedly, and correctness of the algorithm is validated by analyzing trail run data gathered on test drive field.At the end of this paper, constructive schemes of ABS fuzzy control and Anti-Skidding Restraint( ASR) development and reference book are provided.