电动汽车电液复合制动系统平顺性控制研究  

Research on Smoothness Control in Electro-Hydraulic Composite Brake Systems for Electric Vehicles

作　　者：王成 田韶鹏[1,2] 王博 WANG Cheng;TIAN Shaopeng;WANG Bo(School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,China;Foshan Sub-Center of Guangdong Laboratory of Advanced Energy Science and Technology(Foshan Xianhu Laboratory),Foshan 528200,Guangdong,China)

机构地区：[1]武汉理工大学汽车工程学院,武汉430070 [2]先进能源科学与技术广东省实验室佛山分中心(佛山仙湖实验室),广东佛山528200

出　　处：《汽车工程学报》2025年第1期49-58,共10页Chinese Journal of Automotive Engineering

基　　金：广西科技重大专项(桂科AA22068063):面向多场景的模块化电驱动平台技术研究及应用。

摘　　要：为减小电液复合制动系统制动模式切换时的整车冲击以及制动力波动,以前后双电机驱动电动汽车为研究对象,提出一种电液复合制动控制策略,包含轮缸压力跟随控制策略和电机补偿控制策略。轮缸压力跟随控制策略在液压制动介入时,利用H_(∞)鲁棒控制使液压制动系统能快速精确地控制制动力大小,保证制动系统的稳定性控制。电机补偿控制策略在液压制动与再生制动介入或撤出时,利用基于模糊PID的电机补偿控制策略减少复合制动系统因系统响应差异带来的冲击问题,提高制动舒适性。通过Simulink-AMESim-CarSim联合仿真平台进行仿真验证,结果表明,液压制动系统能快速精确跟随目标制动力,同时,制动力波动较无控制情况减小了90%,冲击度减小74%,显著提高了制动平顺性。To reduce the impact on the vehicle and minimize brake force fluctuations during mode transitions in the electro-hydraulic composite braking system,a control strategy for electro-hydraulic composite braking has been proposed,focusing on dual-motor driven electric vehicles with both front and rear wheel drive.This strategy includes a wheel cylinder pressure following control approach and a motor compensation control approach.The wheel cylinder pressure control,activated during hydraulic brake intervention,utilizes H_(∞) robust control to enable the hydraulic braking system to swiftly and precisely manage the magnitude of braking force.As a result,the braking system is stabilized,ensuring reliable vehicle control.To enhance braking comfort,a fuzzy PID-based motor compensation control strategy is employed during the intervention or withdrawal of hydraulic and regenerative brakes.This strategy reduces the impact on the composite braking system caused by variations in system response.The simulation conducted on the Simulink-AMESim-CarSim platform has verified that the hydraulic braking system can rapidly and accurately follow the target braking force.Furthermore,the results show that compared to an uncontrolled situation,the fluctuation in braking force is reduced by 90%and the shock is reduced by 74%,thereby significantly improving braking smoothness.

关 键 词：电动汽车 复合制动 轮缸压力跟随 制动补偿 平顺性 

分 类 号：U461.4[机械工程—车辆工程]