斯达—斯太尔车制动性能的试验研究

本文通过道路试验对斯太尔车的基本性能进行了分析，着重研究了直线制动，带感载阀制动带ＡＢＳ制动及转弯制动的基本特性。     

防抱制动系统在低附着系数路面上复杂制动工况试验研究

本文介绍了采用自行研制的新一代防抱制动系统（ＡＢＳ）控制器所进行的冬季冰雪路面上的制动试验。除ＥＣＥ的ＡＢＳ制动法规规定的试验项目外，重点对变路径制动和转弯制动这样复杂的制动工况进行了测试与试验，并与不带ＡＢＳ同一工况进行了分析对比，结果表明了ＡＢＳ强大的实用有效性。     

防抱制动系统的性能评价

本文以计算机模拟了手段验证了防制动系统试验标准的有铲性，并用这一标准比较常规制动系统与ＡＢＳ的制动效率，探讨了轮胎特性曲线形民制动效率的关系。     

汽车防抱制动系统（ABS）微机测试平台

介绍了汽车防抱制动系统（ＡＢＳ）微机测试平台的软、硬件系统，开发平台的配置及功能，接口电路硬件及ＡＢＳ分析软件的设计，利用该平台对一小型车ＡＢＳ系统进行了道路制动试验分析，结果表明，该系统可有效地用于ＡＢＳ系统的性能分析、控制机理研究及开发。     

MABS工作机理计算机模拟

ＭＡＢＳ主要是通过其内部的弹性囊在制动压力下变形而起作用。根据ＭＡＢＳ弹性囊腔的压力－体变形特性和流体力学理论建立了ＭＡＢＳ的数学模型，并以此通过计算机模拟计算机了制动系统装ＭＡＢＳ与不装ＭＡＢＳ的制动过程中变化情况。     

ABS的普及过程,现状与前景

近年来在汽车制动技术领域，制动系统的防抱死装置迅速发展，令人瞩目。对于汽车工业发达国家，ＡＢＳ正在迅速普及，而在我国，ＡＢＳ正处于起步阶段，本文简述了国外ＡＢＳ的应用普及过程，并对无国ＡＢＳ的应用前景进行了探讨。     

防抱制动执行机构动态建模的研究

对ＡＢＳ气制动系统进行了试验建模研究，对ＡＢＳ的关键部件采用伪随机二位式输入信号，对试验数据，用最小二乘法求得了气制动系统的差分模型。采用键图法对系统进行了建模，重点讨论了阻性计算方法，最后讨论了通断是磁阀实现比例控制的可行性。     

汽车制动防抱死系统的整车布置和道路试验方法

本文阐述汽车制动防抱死系统（ＡＢＳ）的具体应用中，采用不同的布置方式及不同的控制方法，对汽车性能改善、成本的降低的影响，介绍装有ＡＢＳ的汽车不同的道路试验方法及其考核指标。     

ABS调节制动压力方法的研究

制动防抱死装置（ＡＢＳ）调节制动压力的方法及其控制逻辑，主要依赖控制参数的选取，而控制参数的选取是否恰当不仅决定了ＡＢＳ的性能，而且影响到ＡＢＳ的产品成本。本文几种可作为ＡＢＳ控制参数的物理量进行了分析对比，并对其调节制动压力的方法作了探讨。     

ＭＡＢＳ对汽车制动性能的影响

本文建立了汽车在安装自适应机械式制动防抱死装置ＭＡＢＳ（Ｍechanical Adaptive Braking Set)时的制动油压模型，分析了ＭＡＢＳ的起振压力及振动频率对汽车制动性能的影响，为正确使用ＭＡＢＳ来改善汽车制动性能提供了理论基础。     

汽车防抱死制动系统（ABS）试验研究及评价方法

首先对ABS控制理论做了较详细的介绍，通过对ABS控制参数和控制方式的论述提出了ABS道路试验的重要性，重点对ABS试验方法、评价方法做了较详细的介绍。在评价方法方面，提出了利用多个参数来对ABS系统综合评价，该方法不仅适用于ABS产品的认证，更适用于ABS产品的研究及开发。     

Modeling and Analysis of Automotive Antilock Brake Systems Subject to Vehicle Payload Shifting

The steerability and stability of vehicles must be maintained during emergency stopping and evasive driving maneuvers on degraded road surfaces. The introduction of antilock brake and traction control systems (ABS/TCS) has expanded the envelope of safe vehicle operation for the majority of drivers. These mechatronic systems combine an electronic controller with wheel speed sensors, an electro-mechanical hydraulic brake actuator, and in some instances, engine intervention through the engine control unit, to regulate wheel slip. The development of ABS systems has traditionally depended on extensive in-vehicle testing, at cold weather proving grounds, which contribute to lengthy product development cycles. However, recent attention has been focused on the use of simulation and hardware-in-the-loop strategies to emulate test conditions in a controlled setting to shorten product design time and methodically address critical safety issues. In this paper, the effect of transient load shifting due to cargo movement on ABS performance in light-duty vehicles will be investigated. Analytical and empirical mathematical models are presented to describe the chassis, tire/road interface, wheel, brake modulator, and cargo dynamics. Two strategies, a model-free table lookup and model-based discrete nonlinear controller, are presented to regulate the ABS modulator's operation. These vehicle and controller dynamics have been integrated into a simulation tool to investigate the effect of transient weight transfers on the vehicle's overall stopping distance and time. Representative numerical results are presented and discussed to quantify the ABS systems' performance for various loading and operating conditions.     

Experimental investigations on continuous regenerative anti-lock braking system of full electric vehicle

Functions of anti-lock braking for full electric vehicles (EV) with individually controlled wheel drive can be realized through conventional brake system actuating friction brakes and regenerative brake system actuating electric motors. To analyze advantages and limitations of both variants of anti-lock braking systems (ABS), the presented study introduces results of experimental investigations obtained from proving ground tests of all-wheel drive EV. The brake performance is assessed for three different configurations: hydraulic ABS; regenerative ABS only on the front axle; blended hydraulic and regenerative ABS on the front axle and hydraulic ABS on the rear axle. The hydraulic ABS is based on a rule-based controller, and the continuous regenerative ABS uses the gain-scheduled proportional-integral direct slip control with feedforward and feedback control parts. The results of tests on low-friction road surface demonstrated that all the ABS configurations guarantee considerable reduction of the brake distance compared to the vehicle without ABS. In addition, braking manoeuvres with the regenerative ABS are characterized by accurate tracking of the reference wheel slip that results in less oscillatory time profile of the vehicle deceleration and, as consequence, in better driving comfort. The results of the presented experimental investigations can be used in the process of selection of ABS architecture for upcoming generations of full electric vehicles with individual wheel drive.     

具有ABS的汽车制动性能实验模拟系统

介绍了一种在室内模拟汽车道路制动试验的测试系统,该系统不仅可作为汽车防抱死制动系统(ABS)实验教学的设备,亦可作为开发ABS的前期试验装置。     

基于路面自动识别的ABS自适应神经模糊控制器仿真研究

有效、快速的道路状况自动识别对于提高ABS性能具有重要意义。通过仿真试验分析,提出了一种比传统方法更快更高效的路面识别方法,并设计了以滑移率为控制目标的ABS模糊神经网络控制器。结合车辆模型熏对单一附着系数路面和变附着系数路面进行了ABS制动模拟试验。结果表明熏基于路面自动识别ABS模糊控制系统能快速、准确判断出路面状况的变化熏自动调整、优化控制器控制参数熏使车辆获得最大地面制动力,与传统利用车身加速度进行路面识别的逻辑门限控制器相比,该控制器反应更灵敏,控制更精确。     

汽车制动性能比较分析

汽车的制动性能关系剑汽车安全行驶性能。ABS防抱死系统的应用是汽车安全性方面最重要的技术进展。通过对装备ABS汽车与普通汽车制动距离的计算比较分析发现,在湿滑的道路上突然制动,ABS系统可以使驾驶员能够保持车辆行驶平稳,在较短的距离内将汽车刹住。但在不湿滑的路面上,缩短刹车距离的范同值比较小。而在冰雪路面上行驶的车辆,没有装备ABS的汽车在湿路面或冻路面上制动时,制动距离会过长且不能猛烈转向。而装备ABS系统的汽车也是如此,因为尽管ABS能提供附加的制动控制和转向控制,但它不能解决这样一个客观的物理事实：那就是在较滑的路面上,可利用的牵引力很小。     

牵引车、半挂车ABS道路试验及计算方法

ABS试验作为强制实施项目，受到汽车生产企业和检测部门的关注，牵引车、半挂车ABS试验往往连接在一起进行，与其它的机动车试验相比具有一定的特殊性，尤其是计算方法有所不同。详细介绍了半挂车空载、半挂车满载、牵引车满载工况的试验和计算方法，并以实例进行了说明。     

多轴分布式电驱动车辆电液复合制动控制研究

针对多轴分布式电机驱动车辆电液复合制动中易出现的车辆制动抖动问题,提出了一种建压阶段电机制动力修正策略和一种基于前馈-反馈的协调控制策略,分别在建压阶段和其他阶段通过协调复合制动力来解决制动抖动的问题。针对防抱死控制系统与电机制动系统共同作用时的制动矛盾,提出了一种基于PID 控制的ABS控制策略,主要通过改变电机制动力来解决制动矛盾的问题。通过TruckSim、Matlab/Simulink及AMESim联合仿真验证,制动冲击度在建压阶段下降了 20.66%,在电机退出阶段下降了 92.59%,驾驶感觉得到明显改善。而 ABS控制策略也可在保证理想滑移率的同时完成制动能量回收;结合整车制动试验,表明协调控制策略在保证制动效果良好的同时实现了制动能量回收,效果显著。     

A practical identifier design of road variations for anti-lock brake system

Emergency brake technologies have always been a major interest of vehicle active safety-related studies. On homogeneous surfaces, traditional anti-lock brake system (ABS) can achieve efficient braking performance and maintain the handling capability as well. However, when road conditions are time variant during the braking process, or different at the bilateral wheels, braking stability performance is likely to be degraded. To address this problem and enhance ABS performances, a practical identifier of road variations is developed in this study. The proposed identifier adopts a statechart-based approach and is hierarchically constructed with a wheel layer and a full vehicle layer identifier. Based on the identification results, modifications are made to a four-phase wheel-behaviour-based ABS controller to enhance its performance. The feasibility and effectiveness of the proposed identifier in collaborating with the modified ABS controller are examined via simulations and further validated by track tests under various practical braking scenarios.     

Development of an Anti-Lock Brake System for Motorcycle

An Anti-Lock Brake System (ABS) system is developed for motorcycles using different control laws to improve the safety during emergent braking conditions. The mechanical design problem is first investigated so as to modify a scooter to be equipped with the proposed ABS brake system and to set up experimental test stand. For ABS control, the slip control, P1R3, and P2R4 methods are used to implement the controller using an Intel 80196KC single chip microcomputer. The hard-ware-in-the-loop (HITL) simulation is also performed in PC to check the performance in various road conditions including dry and wet roads. It is found experimentally that both P1R3 and P2R4 can both achieve ABS function, but P2R4 performs more desirably than P1R3 method.