电子机械制动执行器的整体最优匹配设计  

Optimal design of electromechanical brake actuator through an integrated mechatronic approach

作　　者：夏利红[1] 邓兆祥[1,2] XIA Li-hong;DENG Zhao-xiang(School of Automotive Engineering,Chongqing University,Chongqing 400044,China;State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学汽车工程学院,重庆400044 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《吉林大学学报（工学版）》2018年第4期998-1007,共10页Journal of Jilin University:Engineering and Technology Edition

基　　金："863"国家高技术研究发展计划项目(2012AA111803);重庆市科委科技攻关项目(cstc2012gg-yyjs0449);机械传动国家重点实验室科研业务费专项项目(SKLMT-ZZKT-2012MS03)

摘　　要：以行星齿轮滚珠丝杆驱动式电子机械制动系统为研究对象,考虑动态阻力载荷、齿轮转动惯量及传动比离散性的影响,提出一种多约束条件下的两级传动机电系统的多目标最优匹配方法。首先,基于执行器的动力学模型和性能目标,针对紧急制动和高附着路面制动防抱死两种典型工况提出相应的负载特征和运动规律。接着,以电机和滚珠丝杆产品数据库为输入,以执行器尺寸限制、电机运行范围及滚珠丝杆性能需求为约束条件,选出能够驱动负载的所有滚珠丝杆和电机。然后,以太阳轮尺寸最小为目标,以齿轮齿面接触强度和齿根弯曲强度为约束条件,获取能够驱动负载的行星齿轮传动比和太阳轮齿数,获得数据库中满足条件的所有匹配方案。最终,获得同时考虑系统质量、启动加速度、制动间隙消除时间及电机等效输出力矩等目标的执行器多目标最优匹配方案。A novel multi-objective optimal design method is proposed for gearhead and ball screw twostage driven electromechanical Brake actuator（EMB）.With consideration of important factors,such as two stage driving,discrete transmission ratio,dynamic resistant torque,transmission inertia and feasibility constraints related to the component characteristics,this method can applied to determine the optimal combination of motor,gearhead and ball screw.First,the loads and motion laws were analyzed based on the dynamic models of EMB for emergency braking and anti-lock braking on dry asphalt road.Then,all feasible motors and ball screws,which can drive the load and satisfy the requirement for actuator size,feasible torque and speed of motor,characteristics of the planetarygears and ball-screw,were selected among the catalogues.Second,the planetary gears were designed according to the combinations of feasible motors and ball-screws to minimize the size of the planetary gear with the constraints of Hertzian pressure and bending fatigue strength,respectively,thus all feasible combinations of motor,gar ratio and ball-screw were achieved.Finally,the multi-objective optimal combination was obtained with respect to actuator weight,starting acceleration,air gap closing time during braking,and motor output torque.

关 键 词：车辆工程 行星齿轮滚珠丝杆驱动 两级传动 动态载荷 电子机械制动执行器 多约束多目标优化 

分 类 号：U463[机械工程—车辆工程]