电子机械制动器的建模、仿真和实验研究  

Modeling,simulation and experimental research on electromechanical brake

作　　者：刘志强[1] 王振 陈玉锦 LIU Zhi-qiang;WANG Zhen;CHEN Yu-jin(School of Automotive and Transportation Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《机电工程》2023年第4期485-493,共9页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(72001095);泰州市科技支撑计划(产业关键技术研发)资助项目(TG202107)。

摘　　要：为了解决目前车辆普遍装配液压制动系统存在的响应滞后问题,以实验室某目标车型为例,对其匹配的电子机械制动器(EMB)进行了设计建模、仿真分析和实验研究。首先,根据车型参数确定制动间隙与最大制动力并完成了制动效能的校核工作,采用“电机+行星齿轮减速器+滚珠丝杠”的选型进行了组合设计,使用CATIA对EMB各部件进行了三维建模,利用ANSYS/Workbench对制动钳钳体进行了力学性能仿真分析;然后,根据EMB各部件间力学与几何关系分别建立了对应的数学模型,在MATLAB/Simulink中建立EMB整体仿真模型后完成了对电机转速特性、堵转转矩特性及EMB最大夹紧力的仿真;最后,搭建了实验平台,结合实验结果对仿真结果进行了验证。研究结果表明:EMB工作时的最大应力为安全极限的34.87%,制动间隙消除速度提高了42.31%,达到最大制动夹紧力的时间降低了45.82%,显著提升了目标车型的制动性能。In order to solve the problem of response lag existing in the commonly assembled hydraulic braking system of vehicles,the design modeling,simulation analysis and experimental test of the matched electro-mechanical brake(EMB)were carried out by taking a target vehicle in the laboratory as an example.Firstly,the braking clearance and the maximum braking force were determined according to the vehicle parameters and the braking efficiency was checked.The selection of"motor+planetary gear reducer+ball screw"was used for combination design.CATIA was used for 3D modeling of EMB components,and ANSYS/Workbench was used for mechanical performance simulation analysis of brake caliper body.Then,according to the mechanical and geometric relationship between the EMB components,the corresponding mathematical models were established respectively.After establishing the overall EMB simulation model in MATLAB/Simulink,the simulation of the motor speed characteristics,the blocking torque characteristics and the maximum clamping force of EMB was completed.Finally,an experimental platform was built to verify the simulation results.The research results show that the maximum stress of EMB is 34.87%of the safety limit,the elimination speed of brake gap is increased by 42.31%,and the time to reach the maximum brake clamping force is reduced by 45.82%,which significantly improves the braking performance of the target vehicle.

关 键 词：电子机械制动器 电机+行星齿轮减速器+滚珠丝杠 制动间隙 最大夹紧力 MATLAB/SIMULINK 制动钳钳体 

分 类 号：TH122[机械工程—机械设计及理论] U463.5[机械工程—车辆工程]