一种汽车盘式电磁制动器的研制  

Research and manufacture of electromagnetic brake disc on automobile

作　　者：龙云梅[1] 林秋逢[1] 曾竞[1] 何荣欣[1] 彭马保[1] 曾文高[1] 陈伟涛[1] 

机构地区：[1]华南理工大学广州学院,广东广州510800

出　　处：《机电工程》2013年第1期39-42,50,共5页Journal of Mechanical & Electrical Engineering

摘　　要：为解决目前汽车液压制动系统存在结构复杂、质量大、能源消耗大等问题,将电磁制动技术应用到汽车制动系统中。开展了盘式电磁制动器增力机构建模和应力仿真分析,建立了制动踏板行程与电流大小以及制动力之间的对应关系,提出了以电磁铁作为动力源,通过增力机构把电磁力放大到预期制动力推动摩擦片工作而实现汽车制动的方法;在理论分析和试验的基础上对电磁力控制、汽车防抱死性能、制动热稳定性等多方面进行了评价;对实体模型的制动稳定性、电磁力随衔铁与铁芯之间距离的变化关系、电磁线圈通电电流与踏板行程之间的变化关系等进行了试验。试验结果表明:电磁铁力达到780 N,制动系统反应时间为0.019 6 s,均符合汽车制动要求;电磁制动系统相比液压制动系统具有反应迅速、结构简单以及更易于集成化和远程控制等特点。In order to solve the problem of the hydraulic brake system of automobile for its complicate structure, heavy weight and great drain on the resources, the electromagnetic brake technology was applied to the automobiles. After the analysis of disc electromagnetic brake reinforcement structure modeling and stress simulation, the corresponding relationship between the brake pedal travel, current size and braking force was established. A method was presented that taking electromagnetic as the power source and through the reinforcement structure enlarge the electromagnetic force to the expected brake force and drive the friction brake to make the ear brake become true. Based on theoretically calculation and experiment, the control of electromagnetic force, ABS performance and the thermal stability of the brake were evaluated. On the solid model, the stability of electromagnetic brake, the varing of the electromagnetic force between the distance of gag bit and iron core, the varing between the current of the electromagnetic loop and the pedal travel were tested. The experimental results show that the electromagnetic force can reach 780 N ,the reaction time is only 0.019 6 s, which meet the requirements of automobile brake, the electromagnetic brake system can react faster than the hydraulic brake system, that its structure is more simple and easier for integration and distant control.

关 键 词：制动系统 盘式电磁制动器 增力机构 电磁力 制动试验 

分 类 号：U463.51[机械工程—车辆工程] TH122[交通运输工程—载运工具运用工程]