The study of brake force distribution strategy on heavy commercial vehicle between front and rear axles
Abstract
In this paper, the optimization analysis of brake force distribution (BFD) is carried out based on the variation of slip between the left-right wheels as well as the front-rear wheels. In this study, we have shown how to obtain the optimal brake force distribution (OBFD), which is an indicator of the lateral stability of a commercial vehicle. The proposed OBFD strategy holds the deceleration and stopping gap values of the vehicle comparing to the traditional braking force distribution (TBFD) strategy. The model employed in this research is a single-track pitch-plane model, with each of the front and rear wheels accounting for equal contributions of the left and right wheels of the respective axle of the actual vehicle. The main objective of the proposed work to find the real BDF considering the braking and cornering condition to maximize the combined lateral and longitudinal coefficient of friction with the road surface. As known, the best choosing of BDF that will satisfy the braking force (BF) requirement and therefore, the ideal stopping gap is achieved. The calculation results show that the proposed strategy can significantly ameliorate the stability of the vehicle under cornering braking for different decelerations. Compression results also showed much more indestructibility behavior for the commercial vehicle (CV), using the ideal technique during extreme braking turning maneuvers when compared with the traditional 'equal slips' strategy.