汽车电子防抱制动系统仿真的研究

本文分析了汽车车轮制动瞬态动力学，结合精确的１５自由度空间刚体动力学模型，定量地分析了车轮抱死松开所获得的加减速度值，并为防抱制动提供了准确的加减速度阈值，同时考虑到防抱制动系统本身装置的特性，提出了最佳又符合实际的制动矩控制参数，使用仿真结果更接近实际，为电子防抱制动系统的研究提供较完整的理论体系和分析方法，并开发了汽车电子防抱制动系统模型（ＨＶＯＳＭ－ＡＢＳ）及模拟程序，该程序具有１６种不同的     

适应不同路面条件下的ABS制动仿真研究

汽车防抱制动系统ABS是改善汽车主动安全性的重要装置,本文利用Mat-lab/Simulink仿真软件,建立了车辆制动防抱系统仿真模型。通过仿真分析得到了车辆在不同路面制动时的滑动率,提出在不同路面制动时滑动率控制的最佳值,使车辆制动时的滑动率达到这一最佳值,从而可以实现车辆在不同路面条件制动时保持稳定的制动力,缩短制动距离。     

ABS电路图（之七）

防抱制动装置大幅度改善了汽车制动性能，但如使用不当，亦会出现不良后果。为充分发挥防抱制动装置的优势，必须正确使用。本文重点介绍使用防抱制动系统的要点。     

防抱装置对制动系统可靠性的影响

按照制系统的功能，把制动系统故障模式分成内部故障和外部故障。相应地，制动系统的可靠性被分成的内部可靠性和外部可靠性，建立了制动系统可靠性模型。在此基础上，分析了防抱装置对制动系统可靠性的影响。防抱装置对制动系统可靠性的影响主要决定于其设计性能和其组成元件的可靠性，尤其是组成元件的高可靠性对改善和提高制动系统可靠性，确保防抱装置的目标功能是不可少的。     

道路不平度对防抱制动系统的影响

根据现代防抱制动系统的工作原理，分析了汽车在平道路上制动时，路面形状，汽车的垂直振动和车轮纵向振动对防抱制动系统的影响，同时，探讨了降低道路不平度以防抱制动系统影响的可能途径。     

防抱制动系统的正确使用

防抱制动装置大幅度改善了汽车制动性能。但如使用不当，亦会出现不良后果。为充分发挥防抱制动装置的优势，必须正确使用，本重点介绍使用防制制动系统的要点。     

防抱制动系统使用要点

防抱制动装置大幅度改善了汽车制动性能，但如使用不当，亦会出现不良后果。本文重点介绍如何正确使用防抱制动系统的要点。     

装用防抱制动装置的汽车冷态制动效能分析

对装与不装FKX－AC1型防抱抗侧滑装置的汽车，进行了冷态制动效能对比试验。结果表明，装防抱制动装置的汽车，其操纵性和稳定性提高。在低速时，干、湿路面上装与不装防抱装置的制动距离相差不多；而在高速时，干、湿路面上装防抱制动装置的制动距离，要比不装时的短。     

汽车列车上ABS布局方案的分析

制动防抱装置（ＡＢＳ）是行车制动系的一个部件，能在制动时自动控制车轮在旋转方向上的滑移程度，全面满足汽车对制动性能的要求，它是汽车电子控制装置中技术最为成熟的系统之一。汽车列车制动工况复杂，本文在对其分析的基础上，探讨了汽车列车的制动防抱技术。     

防抱制动系统计算机动态模拟

本文对双轴汽车进行了详细的动力学分析,建立了与防抱制动系统相关的数学模型,对装备有防抱制动系统的汽车制动过程进行了动态模拟,并分析讨论了防抱制动系统固有特性对汽车制动效能和稳定性的影响。     

基于Simulink/Stateflow的汽车ABS混合建模与仿真

汽车防抱死制动系统(ABS)是一种很关键的汽车主动安全技术。本文采用基于有限状态机的系统仿真方法,采用Simulink和Stateflow模块混合建模,对ABS模型中的连续系统和离散系统进行仿真。仿真结果表明,该混合仿真系统能比较真实地反映汽车ABS系统的实际工作过程,显著缩短制动距离,提高安全性。     

基于MATLAB的汽车ABS安全仿真研究

文章利用MATLAB软件对汽车制动防抱死系统进行安全仿真研究,选取合适的分析对象,把ABS系统拆成整车模型、轮胎模型以及制动器模型,分别对各模型进行受力以及运动分析,建立数学模型。最终在Simulink环境中建立仿真模型,结合整车数据,验证分析了汽车有无ABS系统时的制动效果。结果显示,装有ABS制动防抱死的汽车制动效果更好。     

汽车ABS控制策略的仿真研究

利用Matlab／Simulink软件建立汽车ABS系统仿真模型。分别采用Bang—Bang控制、PID控制以及模糊控制策略,选择合适的控制参数和模糊规则,对ABS控制系统进行仿真,并对其性能进行分析,以确定最优控制方法,目的在于为汽车ABS产品的开发提供借鉴和依据。     

汽车防抱死制动系统的自抗扰控制研究

汽车防抱死制动系统(Anti-lock Braking System,ABS)的作用是确保汽车制动时行驶方向的稳定性、可靠性,但是目前仍存在非线性、时变性以及参数不确定性等问题.为保证汽车制动行驶过程中的操纵稳定性和安全性,进一步实现各工况下防抱死制动系统的优化控制,以影响整车稳定的变量滑移率为研究对象,分析所设计策略...     

防抱死制动系统及其发展趋势研究

ABS(汽车防抱死制动系统)能极大地改善和提高制动性能,是提高车辆主动安全性的重要途径。本文在对ABS技术作精简介绍的基础上,重点论述ABS技术的应用发展,主要包括ABS中的关键技术、有待改进的问题和未来的发展趋势等。     

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.     

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。     

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.     

浅谈重型汽车ABS的应用

本文主要阐述了汽车制动防抱死系统的原理、构造、工作过程以及控制方式进行了综述。针对我公司牵引汽车在进行ABS试验中存在的问题,进行总结,论述了ABS能有效缩短制动距离提高汽车制动时方向稳定性的原因,并对ABS集成化应用改进的方向提出了见解。     

Wheel slip control with torque blending using linear and nonlinear model predictive control

Modern hybrid electric vehicles employ electric braking to recuperate energy during deceleration. However, currently anti-lock braking system (ABS) functionality is delivered solely by friction brakes. Hence regenerative braking is typically deactivated at a low deceleration threshold in case high slip develops at the wheels and ABS activation is required. If blending of friction and electric braking can be achieved during ABS events, there would be no need to impose conservative thresholds for deactivation of regenerative braking and the recuperation capacity of the vehicle would increase significantly. In addition, electric actuators are typically significantly faster responding and would deliver better control of wheel slip than friction brakes. In this work we present a control strategy for ABS on a fully electric vehicle with each wheel independently driven by an electric machine and friction brake independently applied at each wheel. In particular we develop linear and nonlinear model predictive control strategies for optimal performance and enforcement of critical control and state constraints. The capability for real-time implementation of these controllers is assessed and their performance is validated in high fidelity simulation.