摘要
电子机械制动是线控制动的一种重要形式。以企业内部某样车为目标车型,设计一套后轮电子机械制动卡钳(EMB)。基于卡钳刚度建立了卡钳夹紧力控制仿真模型,并进行了夹紧力响应特性试验验证。EMB卡钳响应最大需求夹紧力时间约为160 ms,夹紧力输出能够较好地跟随阶跃、正弦及随机目标曲线。仿真模型能够较准确地模拟卡钳夹紧力及活塞位移变化。同时,卡钳刚度标定对EMB卡钳夹紧力输出具有很大影响,对卡钳刚度进行准确估计是EMB卡钳夹紧力精确控制的基础。
Electro-mechanical braking is an important type of brake-by-wire.A rear electrical-mechanical brake(EMB)caliper was designed for a sample vehicle in an enterprise.Based on the stiffness curve of caliper,the simulation model of the clamping force control was established,and the response characteristics of the clamping force were verified by experiments.The EMB caliper clamping force output can follow the step,sine and random target curves with good dynamic response characteristics,which meet the design requirements.The simulation model can be used to accurately simulate the change of the caliper clamping force and piston displacement.At the same time,caliper stiffness has a significant impact on the accurate control of EMB caliper clamping force,and the accurate control of EMB caliper clamping force should be based on the accurate estimation of caliper stiffness.
作者
齐钢
胡晨晖
张光荣
QI Gang;HU Chenhui;ZHANG Guangrong(Pan Asia Technical Automotive Center,Shanghai 201210,China)
出处
《机床与液压》
北大核心
2021年第16期76-81,共6页
Machine Tool & Hydraulics
