共查询到17条相似文献,搜索用时 125 毫秒
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汽车操纵稳定性的研究与评价 总被引:21,自引:0,他引:21
综述了汽车操纵稳定性研究和评价的历史、现状和存在的问题,着重介绍了客观测量评价、主观评价、人一车闭环系统的综合评价和模拟器评价等几种评价方法。汽车操纵稳定性很多研究还处于探索和完善阶段。目前还没有公认的评价标准,对驾驶员模型、人一车闭环系统的研究有助于促进汽车操纵稳定性评价指标和评价方法的统一。 相似文献
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汽车的操纵稳定性是汽车动态性能的重要组成部分,在汽车开发过程中的不同阶段,通常运用主观评价方法或客观评价方法对操纵稳定性进行验证和评价。文章进行了基于驾驶模拟器的汽车操纵稳定性主客观关联技术研究。首先基于驾驶模拟器,运用试验数据标定后的车辆模型,生成了用于主客观关联研究的大量车辆性能数据;基于这些数据,运用岭回归的方法,建立了主客观关联模型,并对模型精度进行了验证。文章的研究成果可以优化车辆性能开发流程,提升车辆开发效率,为汽车的操纵稳定性开发、评价等提供支撑。 相似文献
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本文主要讨论主观评价的基本原理及其在汽车开发研究领域中的应用。主观评价基本原理方面主要讨论概念、要素和与客观评价的区别。汽车开发研究领域的应用主要选取在汽车操纵稳定性、噪声品质、平顺性等方面中主观评价的应用。 相似文献
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主观评价作为汽车开发研究的必要手段,已经被国外汽车生产厂商广泛认同,尤其对于诸如汽车操纵稳定性这类至今没有公认的、统一的评价体系和评价指标情况,主观评价将作为最终检验标准被采用. 相似文献
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汽车操纵稳定性主客观评价数据的一种处理方法 总被引:1,自引:0,他引:1
汽车操纵稳定性主客观评价之间的相关性分析是汽车技术的重要课题。提出了汽车操纵稳定性主客观评价数据的一种处理方法.通过回归分析筛选客观参数,运用BP神经网络建立相关性模型,验证结果说明了该方法的可行性。 相似文献
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From MY2010 US-NCAP, the 5th percentile female Hybrid III dummy has been used for the safety evaluation of the right front passenger position in the frontal impact test. In Korea, the Ministry of Land, Infrastructure and Transport (MLIT) decided to evaluate the safety of the 5th percentile female dummy in the frontal impact test from 2013 KNCAP. In this paper, using the frontal NCAP data for the 5 vehicles available from the NHTSA test database, the safety of the 5th percentile female dummy were examined. Using the evaluation and rating method by the KNCAP, 5 vehicles received 5 stars. Using the evaluation and rating method by the US-NCAP, only one vehicle received 5 stars and the remaining 4 vehicles received 4 stars. In the US-NCAP, the Nij was the most influential factor for the star rating. In the KNCAP, the evaluation and rating method for the 5th percentile female Hybrid III dummy is less stringent than the method of the US-NCAP. The evaluation and rating method is proposed to increase the stringency of the star rating for the female dummy in the KNCAP. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(10):1416-1438
This paper investigates subjective assessments (SA) of vehicle handling and steering feel tests, both numerical and verbal, to understand drivers’ use of judgement scales, rating tendencies and spread. Two different test methods are compared: a short multi-vehicle first-impression test with predefined-driving vs the standard extensive single-vehicle free-driving tests, both offering very similar results but with the former saving substantial testing time. Rating repeatability is evaluated by means of a blind test. Key SA questions are identified by numerical subjective assessment autocorrelations and by generating word clouds from the most used terms in verbal assessments, with both methods leading to similar key parameters. The results exposed in this paper enable better understanding of SA, allowing improving the overall subjective testing and evaluation process, and improving the data collection and analysis process needed before identifying correlations between SA and objective metrics. 相似文献
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针对某乘用车开发FT阶段乘坐舒适性太差的问题,在该车型底盘调校过程中,通过灵敏度分析对底盘参数进行了优化。首先对减震器阻尼特性进行了调整,提出了多个优化方案,其次通过多体动力学建模及分析方法对优化方案进行了预测,最后通过实车的主、客观测评验证了参数优化方案的实际效果。结果表明,调校后的车辆在保证操控性的前提下,乘坐舒适性得到了改善。 相似文献