Structural parameter design of brake-by-wire system for light commercial vehicle based on multi-objective optimization

doi:10.3969/j.issn.1674-8484.2025.04.005

Abstract

Abstract:

To meet the high-performance braking requirements of light commercial vehicles, an optimization design method for the structural parameters of the brake-by-wire (BBW) system based on multi-objective optimization was proposed. This method established the basic configuration of the wire-controlled motion system, formulated optimization objective functions and constraint conditions for braking force, transmission efficiency, and the end motion speed of the actuator. The weights of each objective function were calculated using the fuzzy analytic hierarchy process, and a multi-objective comprehensive optimization function was constructed through linear weighting. Based on this function, the particle swarm optimization algorithm was employed to solve for the optimal values of the multi-objective function, thereby determining the structural optimization parameters of the wire-controlled motion system. This ensured that the overall performance of the system reached its optimal state. The results indicate that following the parameter optimization design, the braking force of the BBW system increases by 8.8%, the end movement speed of the actuator improves by 12.5%, and the transmission efficiency rises by 5.1%. The proposed optimization method for the comprehensive performance index effectively enhances the braking capacity and operational efficiency of the BBW system.

Key words: brake-by-wire (BBW) system, structural parameter optimization, fuzzy analytic hierarchy process, multi-objective particle swarm optimization

CLC Number:

U463.5

ZHANG Tao, CHEN Yuguo, QIN Yufu, WANG Yanzi, WANG Yang, MA Rui. Structural parameter design of brake-by-wire system for light commercial vehicle based on multi-objective optimization[J]. Journal of Automotive Safety and Energy, 2025, 16(4): 548-557.

Figures/Tables 6

References 26

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参数	制动力，F kN	运动速度，v (mm·s^-1)	传动效率，η %
优化前	34	3.2	78
优化后	37	3.6	82
提升率/ %	8.8	12.5	5.1

参数	制动力，F kN	运动速度，v (mm·s^-1)	传动效率，η %
优化前	34	3.2	78
优化后	37	3.6	82
提升率/ %	8.8	12.5	5.1