汽车电子机械制动器（EMB）的发展研究

本文针对人们对汽车制动系统的要求,结合智能制动控制系统的工作原理,综述了电子机械制动器（EMB）的发展过程,提出对EMB的结构要求和亟待解决的问题。     

电控机械制动系统研究

针对重型商用汽车用电控机械制动系统(EMB)提出一种制动器结构,研究了单轮控制系统及控制策略,最后结合单轮制动器样机与控制系统的联合调试进行了初步功能验证,研究结果为进一步整车应用提供了基础。     

EMB与HB的制动效能对比分析

本文建立了汽车制动过程的动态分析模型,建立并引入传统的HB液压制动器模型和新型的EMB电子机械制动器模型,通过计算机仿真进行制动效能的对比分析。     

装备EMB系统的挂车制动性能试验与分析

装备机械式电子制动系统(EMB,Electronic Mechanical Brake System)的挂车的制动性能特性与常规制动系统性能有很大区别,EMB系统具有响应时间短,制动效能高的特点,结合EMB制动系统的制动性能,搭建制动性能测试平台,对装备EMB系统的单轴和双轴挂车进行试验,从制动效能与制动协调性2个方面对装备EMB系统的挂车整车制动性能进行评价,分析制动过程中的制动减速度、制动力和制动距离的变化情况;并依据大量试验数据对比EMB系统与常规制动系统,验证EMB系统特性。     

汽车电子机械制动器（EMB）的发展研究

本文针对人们对汽车制动系统的要求,结合智能制动控制系统的工作原理,综述了电子机械制动器（Electro Mechanical Brake）的发展过程,提出对EMB的结构要求和亟待解决的问题。     

车辆EMB制动系统发展简介

EMB电子机械制动器具有响应速度快、不需要制动液、安全环保、制动性能高等优点,并且兼具许多目前使用的电子控制系统的功能,如ABS、ESP等等。最早它用在飞机上,近些年来国外也展开了大量对车用EMB制动器的研究工作。本文简单回顾了EMB 制动器的发展过程,并分析了其发展的几个重点方向和难点。     

商用车AMT轴端制动系统设计与分析

文章以商用车AMT轴端制动器为研究对象，对设计的制动系统结构基础进行参数设计与匹配分析，并在试验台架上，基于变速器控制器、控制离合器和制动器，利用工具CANalyser实时监测制动性能数据，验证轴端制动器性能是否满足设计要求，该设计流程与方案适用于商用车轴端制动系统的设计与匹配。     

EQ1061轻型汽车制动器制动力矩指标的确定

介绍了ＥＱ１０１６轻型汽车车轮制动器制动力矩设计设计指标的确定，并对汽车车轮制动器制动力矩设计指标的确定方法进行了讨论与完善。     

汽车电磁制动器的变结构控制及其仿真

电磁制动器是一种新型的汽车辅助制动系统，通过对滑模变结构控制方法的研究，将其应用于制动控制中，并利用MATLAB／SIMULINK建立了系统的数学模型，进行仿真计算，为汽车电磁制动器控制系统的设计提供了一定的理论依据。     

标致307制动器结构设计

制动器是汽车主动安全系统中重要的执行机构.为研究一般制动器结构的设计方法,文章以标致307制动器为研究对象,分析制动器的结构特点,参考设计书对制动器尺寸和材料进行设计与校核.设计的制动器制动力为300 N,踏板全行程为117.6 mm,完成了标致307制动系的驱动机构和制动管路的布置并完成了三维图像建模.该设计方法具有普遍意义,可以推广到其他类似车型制动器的设计应用.     

汽车电子机械制动系统

电子机械制动系统（EMB）,以电驱动元件为制动执行器,取代传统的液压或气压制动执行器.是一种全新的制动理念.它具有的没有制动液体、反应快速、性能可靠及安全环保等特点使其拥有令人看好的前景.在国外.EMB的研究取得初步的成绩,Bosch、Siemens公司已经研制出了自己的部分试验成果,而国内的研究刚刚开始.文章阐述了电子机械制动系统的概念、结构组成、工作原理及性能特点,论述了其关键技术及发展.     

Approach to functional safety-compliant ECU design for electro-mechanical brake systems

In this paper, we propose a design approach to a functional safety-compliant ECU for an electro-mechanical brake (EMB) control system or an electronic wedge brake (EWB) control system. Brake actuators in a brake-by-wire (BBW) system such as EMB or EWB are characterized by the safety-critical functions which are now executed by using many electric and electronic devices with application software. Based on hazard analysis and risk assessments of the automotive functional safety standard ISO 26262, the proposed EMB control system should be ASIL-D-compliant, which is the highest ASIL level. To this end, a hardware and a software design method is introduced to implement functionl safety-oriented monitoring functions which are based on an asymmetric dual-core architecture with an external watchdog processor. It is shown by using EMB hardware-In-the-Loop-Simulation (HILS) that the proposed ECU design approach is very effective when a hardware fault or software execution faults occur in the EMB ECU, moreover, this functional safety-compliant design can be well combiled with the sensor fault-tolerant control logic.     

Fault-tolerant braking control with integerated EMBs and regenerative in-wheel motors

This paper presents a fault-tolerant brake torque controller for four-wheel-distributed braking systems with in-wheel motors and Electro-Mechanical Brakes (EMB). Mechanical and electrical faults can degrade the performance of the EMB actuators and, thus, their effects need to be compensated in vehicle dynamics level. In this study, the faults are identified as performance degradation and expressed by the gains of each actuator. Assuming the brake force distribution and the regenerative braking ratios, the over-actuated braking system is simplified into a two-input system. A sliding mode controller is designed to track the driver’s braking and steering commands, even if there exist faults in EMBs. In addition, adaptive schemes are constructed to achieve the fault-tolerant control in braking. The proposed controller and strategies are verified in the EMB HILS (Hardware-in-loop-simulation) unit for various conditions.     

Fault detection and diagnosis of the electromechanical brake based on observer and parity space

In the future, the conventional hydraulic brake system in automobiles will be removed and replaced by an electrically operated brake system called brake-by-wire. The brake-by-wire units, such as the EMB (Electro-Mechanical Brake), provide better braking performance by directly controlling the brake motor and are environmentally friendly because they do not use hydraulic fluid. For implementation of the EMB systems, reliable and robust fault detection and diagnosis methods become increasingly important. In this study, a sensor fault diagnosis method is proposed with parity space and observer approaches to detect faults in the motor current sensor, speed (or position) sensor and clamping force sensor. The proposed method is verified through a closed-loop simulation using Matlab/Simulink, and the simulation result is compared with the HILS bench test results.     

新型电控机械制动系统制动效能分析

在建立了汽车制动过程的动态分析模型、传统的液压制动器模型和新型的电控机械制动器模型基础上,通过计算机仿真对比分析了它们的制动效能。研究结果表明新型电控机械制动器比传统液压制动器具有响应速度快、制动效能高等优点。     

电子机械制动系统(EMB)简介

电子机械制动系统(EMB)可兼有ABS、TCS、ESP、ACC等功能,它具有的没有制动液体、反应快速、性能可靠、安全环保等特点使其拥有令人看好的前景。在国外,EMB的研究只是近年刚刚开始,Bosch、Siemens、Teves公司已经研制出了自己的部分试验成果,而国内的研究仍属空白。     

EMB硬件在环仿真试验台

介绍了用于EMB系统研究的硬件在环仿真试验台的搭建方法,对试验台的总体结构设计、机械系统设计、控制电路设计以及用于仿真试验的仿真模型进行了初步的探讨,并通过试验证实了这一技术的可行性和应用前景。     

Analysis of a regenerative braking system for Hybrid Electric Vehicles using an Electro-Mechanical Brake

The regenerative braking system of the Hybrid Electric Vehicle (HEV) is a key technology that can improve fuel efficiency by 20∼50%, depending on motor size. In the regenerative braking system, the electronically controlled brake subsystem that directs the braking forces into four wheels independently is indispensable. This technology is currently found in the Electronic Stability Program (ESP) and in Vehicle Dynamic Control (VDC). As braking technologies progress toward brake-by-wire systems, the development of Electro-Mechanical Brake (EMB) systems will be very important in the improvement of both fuel consumption and vehicle safety. This paper investigates the modeling and simulation of EMB systems for HEVs. The HEV powertrain was modeled to include the internal combustion engine, electric motor, battery and transmission. The performance simulation for the regenerative braking system of the HEV was performed using MATLAB/Simulink. The control performance of the EMB system was evaluated via the simulation of the regenerative braking of the HEV during various driving conditions.     

汽车线控制动技术及发展

现代汽车制动控制技术止朝着线控制动控制方向发展，线控制动系统将取代以液压或气压为主的传统制动控制系统。介绍了汽车线控制动技术的研究现状，对电子液压式制动系统和电子机械式制动系统的结构及工作原理进行了介绍和比较，并对电子机械式制动系统的关键部件及其性能特点进行了分析，论述了线控制动系统的关键技术及发展。     

电子机械式制动执行器硬件在环仿真

电子机械制动技术是一种全新的制动理念,极大的提高了汽车的制动安全性.文中介绍了电子机械制动系统的发展、组成及工作原理;搭建了电子机械式制动执行器原理机硬件在环仿真试验平台.以1/4车辆模型为研究对象,对基于模糊控制方法的车辆防抱死制动特性的Matlab/Simulink仿真结果和硬件在环仿真结果进行比较分析.验证了电子机械式制动执行器的合理性和可行性.