共查询到19条相似文献,搜索用时 546 毫秒
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轮速传感器测量汽车轮速信号,用于制动、发动机及变速箱等众多系统控制,是汽车最关键的部件之一。新车型开发阶段,为了对汽车制动防抱死系统(ABS)及早有效的开发验证,需要对轮速传感器进行仿真模拟。文章针对最常用的主动式轮速传感器进行测试与分析,通过设计信号调理电路,成功搭建了ABS硬件在环仿真平台,既简化了汽车开发阶段的验证与测试,又节省了开发成本。 相似文献
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ABS是英文ANTILOCK BRAKE SYSTEM的缩写,即防抱死制动系统。ABS系统能极大地改善和提高车辆的制动性能,它能够在制动过程中对被制动车轮的制动压力进行自适应调节,防止制动车轮发生抱死,是提高车辆主动安全性的重要装备。本文在介绍防抱死制动系统(ABS)的结构和工作原理的基础上,重点结合VBOX设备和MT500/e KFZ轮速传感器介绍某轻型客车的ABS试验流程,同时对试验结果进行比较和分析,得出该车辆的防抱死制动性能的综合评价。 相似文献
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一汽丰田锐志轿车的防抱死制动系统(ABS)为4通道调节回路,4个车轮的制动力均可以单独调整,改善了车辆的制动性能。1.系统的组成锐志轿车ABS系统主要由车轮上的轮速传感器,装在制动主缸旁边的液压调节器以及电磁阀、ECU等组成。ABS系统各部件的安装位置如图 相似文献
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故障现象
一辆2005MY上海通用雪佛兰乐风,行驶里程72352km,客户进维修站检查组合仪表ABS警告灯/驻车警告灯常亮.
故障诊断与排除
首先使用SGM专用检测仪器Tech-2连接车辆DLC,进入车身ABS系统进行诊断,在ABS电脑模块EBCM中存储有故障码:DTC C0035左前轮轮速传感器开路或短路和DTC C0037左前轮轮速传感器输入信号为0.路试车辆,观察ABS左前轮数据为0,初步怀疑是左前轮轮速传感器故障,经过更换左前轮轮速传感器再次试车,ABS故障灯不再启亮,左前轮轮速传感器数据正常,组合仪表驻车警告灯还是常亮. 相似文献
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为测试汽车ABS的性能,搭建了一种ABS混合仿真试验台,并介绍了该试验台的结构及工作原理.与其它道路试验、纯软件仿真试验等方法相比,该试验可在实验室环境下完成对ABS的测试,测试结果包含轮缸压力曲线、轮速曲线、滑移率曲线及制动距离等参数,通过这些曲线参数可对不同厂家的ABS产品进行对比分析,验证不同ABS对整车制动性能的影响,为主机厂提供产品选型的依据. 相似文献
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ABS数据采集与算法仿真软件开发 总被引:4,自引:0,他引:4
为了更好地进行ABS的研究与开发,设计并不开发出ABS数据采集与算法仿专用软件。该软件提供了高速数据采集、轮速计算与滤波、参考车速和滑移率计算、轮加速度计算和防抱死制动控制逻辑分析等功能,为ABS的测试分析、研究开发提供了方便有的工具。经过仿调试和实车试验,软件实现了预期的防抱死控制效果,证明了软件中滑移率计算的正确性和防抱死制动控制逻辑设计的合理性。 相似文献
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ABS系统与车辆的匹配是一个亟待解决的课题。为了优化针对ABS系统性能的试验方法,通过一系列不同道路附着系数、不同车辆行驶速度及车辆负荷的工况下,做了相关道路试验,以验证ABS系统的性能,并根据对车辆制动减速度和车轮转速的监测结果,验证试验方法的规范性,提出了增加车辆横摆角度和横摆角速度以评价车辆制动性能的建议。 相似文献
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M. Sofian Basrah Efstathios Siampis Efstathios Velenis Dongpu Cao Stefano Longo 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2017,55(11):1665-1685
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. 相似文献
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汽车防抱死制动系统(ABS)可以控制汽车制动时的滑移程度,防止车轮抱死拖滑,提高汽车制动时的操纵稳定性。文章介绍了ABS的基本功能和控制原理,阐述了目前ABS所采用的控制技术及发展方向。指出随着车速传感器技术的发展,基于车轮滑移率的各种控制算法将被广泛重视和采用;将各种控制算法结合起来是ABS控制技术的一个重要发展方向。 相似文献
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随机不平路面上的ABS制动研究 总被引:1,自引:0,他引:1
在ADAMS中建立整车和各种等级随机不平路面的模型,在MATLAB/simu link中建立逻辑门限值ABS控制方法,利用联合仿真技术研究随机不平路面对ABS的影响,得到随机不平路面上ABS制动过程中轮胎纵向力、角速度和制动距离等重要参数的变化规律,为ABS在随机不平路面上的抗干扰措施提供依据。 相似文献
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A cooperative control algorithm for an in-wheel motor and an electric booster brake is proposed to improve the stability of an in-wheel electric vehicle. The in-wheel system was modeled by dividing it into motor and mechanical parts, and the electric booster brake was modeled through tests. In addition, the response characteristics of the in-wheel system and the electric booster brake were compared through a frequency response analysis. In the cooperative control, the road friction coefficient was estimated using the wheel speed, motor torque, and braking torque of each wheel, and the torque limit of the wheel to the road was determined using the estimated road friction coefficient. Based on the estimated road friction coefficient and torque limit, a cooperative algorithm to control the motor and the electric booster brake was proposed to improve the stability of the in-wheel electric vehicle. The performance of the proposed cooperative control algorithm was evaluated through a hardware-in-the-loop simulation (HILS). Furthermore, to verify the performance of the proposed cooperative control algorithm, a test environment was constructed for the anti-lock braking system (ABS) hydraulic module hardware, and the performance of the cooperative control algorithm was compared with that of the ABS by means of a HILS test. 相似文献
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