电子液压线控制动压力控制开发  

Development of Electro-hydraulic Brake Pressure Control

作　　者：姚磊 王国春 曹文亮 YAO Lei;WANG Guochun;CAO Wenliang(Hunan Aisn Auto R&D Co.,Ltd.,Changsha 410221;Hunan University,Changsha 410082,China)

机构地区：[1]湖南湖大艾盛汽车技术开发有限公司,湖南长沙410221 [2]湖南大学,湖南长沙410082

出　　处：《汽车电器》2024年第7期36-39,共4页Auto Electric Parts

摘　　要：为了克服电子液压线控制动系统(EHB)死区、摩擦及系统不确定性对压力控制的响应和精度的影响,文章提出一种新的闭环-前馈相结合的压力控制策略。该策略首先建立电子液压线控制动系统的动力学模型,并分析压力与活塞位移和速度相互关系,根据试验台架获取主缸压力与活塞位移的关系曲线;同时提出以压力-速度-电流为主的主控制回路,并以主缸活塞位置为辅助量的压力补偿控制策略;最后在斜坡和正弦工况下进行测试,结果表明该方法能够保证压力跟踪的快速响应和稳态跟踪性能。This article proposes a new closed-loop and feedforward pressure regulation technique to address the effects of dead zone,friction,and system uncertainty on electro-hydraulic brake(EHB)response and accuracy.First,a dynamic model of EHB is developed,and the relationship between pressure,piston displacement,and speed is investigated.The relationship curve between master cylinder pressure and piston displacement is obtained using the test bench.A pressure compensation control approach based on the pressure-velocity-current main control loop is proposed,with the master cylinder piston position used as an auxiliary quantity.Finally,tests are carried out under slope and sinusoidal conditions,and the results show that the proposed method can guarantee the fast response and steady-state tracking performance of pressure tracking.

关 键 词：电子液压制动系统 压力闭环控制 压力-位移曲线 补偿控制 HIL测试台架 

分 类 号：U463.5[机械工程—车辆工程]