电子机械制动器(EMB)关键部件设计
毕业论文关键词 电子机械制动系统 电机 运动转换装置 减速增扭机构
Title The Design of the Key Component of Electro-Mechanical Braking System (EMB)
Abstract Electro-Mechanical Braking system (EMB), which has great prospects for development in the future, is currently in its no brake fluid, small volume, quick response and other advantages to gradually replace the traditional braking system. After understanding and studying some domestic and foreign advanced achievements, this paper put forward three new schemes. Then, according to the requirements of the task, a suitable scheme has been chosen finally. According to the general scheme, the motor, the motion conversion device, the slowing down and increasing torque mechanism were designed calculated in detail. Finally, these body parts drawing and assembly drawing were drawn by using CAD drawing software. Through the above work, this paper completed the design of the executive body of Electro-Mechanical Braking system.
Keywords Electro-Mechanical Braking system Electrical machinery The motion conversion device The slowing down and increasing torque mechanism
目录
1.绪论..1
1.1.电子机械制动技术及其应用现状1
1.1.1.电子机械制动技术概况.1
1.1.2.电子机械制动技术研究现状及研究方向.1
1.2.项目的主要研究内容2
2.电子机械制动系统原理..3
2.1.传统行车制动系统的组成与结构3
2.2.电子机械制动系统的组成与结构3
2.3.电子机械制动系统的优点4
2.4.系统设计方案的选择6
2.4.1.系统实现方案一.6
2.4.2.系统实现方案二.6
2.4.3.系统实现方案三.7
2.4.4.系统解决方案的对比与选择.8
3.电子机械制动设计..9
3.1.选型汽车的参数9
3.2.制动钳夹紧力的确定9
3.3.驱动机构..10
3.3.1.电机选型...10
3.3.2.电机功率校核...10
3.4.二级齿轮减速器..10
3.4.1.确定减速器各项参数...10
3.4.2.减速器齿轮的设计...11
3.4.3.减速器轴的设计...19
3.5.滚珠丝杠..29
3.6.箱体..30
总结..32
致谢..33
参考文献..34
附录A系统各零件工程图..36
1. 绪论 近几年来，我国高速公路上发生的大量事故的统计结果表明：由于车辆本身的技术问题导致交通事故发生的案例已达到 30％左右。而其中主要是因为车辆制动性能不足或制动操作不当等原因而造成的车辆追尾、制动跑偏、甩尾等恶性交通事故[1]。因此，改进车辆制动性能、提高车辆制动系统的恒定性以及改进车辆制动系统的人机操作环境有很强的现实意义，可以切实提高车辆行驶的安全性和方便性，减少由车辆原因而导致的交通事故的发生概率[2]。随着人们对车辆制动性能影响车辆安全性的意识的提高，以及电子技术的发展，车辆制动系统也历经了数次变迁和改进。近年来，汽车电子机械制动系统作为汽车制动系统的发展方向，已经成为国内外研究的热点之一。