共查询到18条相似文献，搜索用时 78 毫秒
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利用虚拟样机软件ADAMS/CAR,建立了整车模型和分离路面模型,并在Matlab/Simulink环境下建立了ABS的控制模型。在此基础上对带有ABS的车辆进行了联合仿真,分析其在分离路面上的制动性能,最后与不带ABS车辆的制动性能进行了对比。联合仿真结果表明:带ABS的车辆在制动效果、行驶方向稳定性上具有明显优势,同时也说明了ABS联合仿真具有较高的可行性与有效性,可为ABS的研究提供一定依据。 相似文献
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本文主要针对一台丰田雷克萨斯LEXUS ES300型轿车的ABS系统,根据客户反映,ABS系统开始工作正常,但在行驶的过程中紧急制动后,ABS警告灯突然会亮,ABS系统明显不起作用,制动踏板感觉有不寻常的抖动,而且发硬,制动效果减弱。根据故障现象,结合该车ABS系统的结构和原理,对这一故障进行了比较深入的分析和讨论,并加以排除。 相似文献
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文章在阐述了汽车防抱死制动装置(ABS)的工作原理、应用优点,并在构造的基础上,以ABS装置在羊城牌YC6701C1中型客车的试验应用为例,进行了证明. 相似文献
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传统融资方式的局限性是铁路寻求创新融资的原因,而ABS在中国的发展又为铁路应用ABS这一融资方式提供了可能,加上我国铁路应用ABS的一些有利条件作为依据,以及应用ABS将会带来的积极意义,我们可以看到,ABS在中国铁路的应用具有可行性。 相似文献
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介绍了大型客车ABS防抱死装置的工作原理。针对大型客车ABS的制动的工作特点,确定对试验台进行研究设计,并主要对台架的主要工作参数范围进行确定。并通过建模及有限元分析验证了该制动试验台的有效性和可行性。 相似文献
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简述气压制动式ABS特点及组成,介绍了气压制动式ABS各零件的布置,详细阐述了气压制动式ABS系统故障诊断及各部件故障检修。 相似文献
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《Research Policy》2023,52(2):104674
Access and benefit sharing (ABS) is a central approach to address biopiracy – the misappropriation of genetic resources and traditional knowledge without consent or compensation, often tied to patenting. Benefit-sharing agreements comprise a core element of ABS and are intended to leverage greater social and economic justice, create incentives for biodiversity conservation, and strengthen the rights of indigenous and local communities. However, emerging evidence suggests otherwise. Through review of four cases of biodiversity commercialization in South Africa – Hoodia gordonii, Aspalathus linearis (rooibos), Sceletium tortuosum (kougoed) and Pelargonium sidoides, each with histories of biopiracy charges and associated benefit-sharing agreements, this paper aims to explain this apparent contradiction. The cases reveal that while ABS has succeeded in recognizing holders of traditional knowledge, the wider political and economic struggles faced by communities remain neglected. Power relations and economic disparities have not changed, and control remains vested in land, with ownership remaining highly skewed towards industry partners who have market dominance; and intellectual property, the benefits of which are disassociated from traditional knowledge holders and biodiversity custodians. ABS processes have also led to a clamor for representation, favoring groups that are politically connected, well organized and resourced, while excluding more marginalized groups who are less capacitated. Moreover, despite significant biodiversity concerns in each case, there are few conservation benefits. Such trends, combined with new forms of “digital biopiracy” and opportunities opening through the post 2020 Global Biodiversity Framework, emphasize the need to reconceptualize ABS to leverage more equitable and sustainable outcomes. 相似文献
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《Journal of The Franklin Institute》2022,359(6):2608-2626
An Antilock Braking System (ABS) is characterized by nonlinear dynamics, which render more difficult the design of a controller for high performance. The problem is even harder due to the uncertainties on the parameters appearing in its dynamics. In this paper, an ABS laboratory setup is considered, which mimics a quarter car model. A super–twisting controller is proposed to overcome the problem due to parameter uncertainties. This controller is designed in order to impose a reference value of the tire slip. Two cases are considered: in the first, nominal ABS parameters are used in the controller, whereas in the second the controller embeds an estimator of the tire–road friction coefficient, which is one of most critical parameters. The friction coefficient is estimated in finite–time by means of a high–order sliding mode differentiator. The original contributions of the paper are the real–time implementation of the super–twisting controller for the laboratory setup under study, and the use of a super–twisting estimator to provide a finite–time estimation of the friction coefficient between the tire and the road, along with a comparison with classical PI–like and super–twisting controllers, available in the literature. The ABS laboratory setup allows checking experimentally the performance of the proposed nonlinear dynamic controller, showing a considerable increase of the efficiency of the control system. 相似文献
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本文设计与开发汽车ABS实验分析系统,并通过串口方式进行通信,采用序列化方式存取文件信息,以图形化方式显示和分析数据。 相似文献
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《Journal of The Franklin Institute》2023,360(8):5910-5927
This paper addresses an output tracking problem for discrete-time high-order fully actuated (DHOFA) systems and its application in the control of air-bearing spacecraft (ABS) simulator. A HOFA system model, as a novel system representation, is applied to establish the dynamics of discrete-time control systems. Accordingly, a HOFA predictive control scheme is presented to deal with this problem, which is composed of a HOFA feedback for stabilization and a HOFA predictive control for tracking. In this scheme, a Diophantine equation is exploited to construct an incremental HOFA (IHOFA) prediction model to substitute a reduced-order prediction model, and then a cost function involving tracking performance is minimized by using multi-step output predictions. A sufficient and necessary condition is proposed to discuss the stability and tracking performance of the closed-loop DHOFA systems, it is simple to utilize in system analysis and extend in practice. Two experiments of the control of ABS simulator are shown to illustrate the feasibility of the presented HOFA predictive control scheme. 相似文献