多轴分布式电驱动车辆电液复合制动控制研究
Electro-Hydraulic Composite Brake Control for Multi-Axis Distributed Electric Drive Vehicles
靳立强 1李星辰 1田端洋 1刘少杰 1刘嘉鑫 1解文周1
作者信息
- 1. 吉林大学 汽车工程学院,长春 130022
- 折叠
摘要
针对多轴分布式电机驱动车辆电液复合制动中易出现的车辆制动抖动问题,提出了一种建压阶段电机制动力修正策略和一种基于前馈-反馈的协调控制策略,分别在建压阶段和其他阶段通过协调复合制动力来解决制动抖动的问题.针对防抱死控制系统与电机制动系统共同作用时的制动矛盾,提出了一种基于PID 控制的ABS控制策略,主要通过改变电机制动力来解决制动矛盾的问题.通过TruckSim、Matlab/Simulink及AMESim联合仿真验证,制动冲击度在建压阶段下降了20.66%,在电机退出阶段下降了92.59%,驾驶感觉得到明显改善.而ABS控制策略也可在保证理想滑移率的同时完成制动能量回收;结合整车制动试验,表明协调控制策略在保证制动效果良好的同时实现了制动能量回收,效果显著.
Abstract
In response to the issue of vehicle brake jitters commonly seen in electric-hydraulic composite braking systems driven by multi-axis distributed motors,two strategies are proposed:a motor braking power correction strategy during the pressure buildup stage and a coordinated control strategy based on feedforward-feedback.These strategies respectively address brake jitter by coordinating the composite braking force during the pressure build-up phase and other stages.A PID control-based strategy for ABS has been developed to resolve the braking conflict arising from the simultaneous operation of the ABS and the motor braking system by adjusting the motor braking force.The effectiveness of the proposed approach was validated by conducting a comprehensive joint simulation using TruckSim,Matlab/Simulink,and AMESim.Results show that the brake jolt decreases by 20.66%during the pressure buildup phase and 92.59%during the motor exit phase,significantly improving the overall driving experience.Furthermore,the ABS control strategy facilitates the recuperation of braking energy while maintaining the ideal slip ratio.Supported by the full vehicle braking test results,the coordinated control strategy achieves efficient recuperation of braking energy while ensuring good braking performance.
关键词
多轴分布式电驱动车辆/电液协调控制/ABS与RBS协调控制/制动能量回收Key words
multi-axle distributed electric drive vehicle/electro-hydraulic coordinated control/ABS and RBS coordinated control/recuperation of braking energy引用本文复制引用
基金项目
国家重点研发计划(2021YFB2500703)
出版年
2024
国家科技期刊平台
NSTL
万方数据