共查询到18条相似文献,搜索用时 218 毫秒
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本文介绍了齿轮传动的多目标设计方法,以斜齿轮体积和传动平稳可靠性为目标函数,建立了斜齿圆柱齿轮传动的多目标优化设计数学模型。并且结合实例利用科学计算软件MATLAB的优化工具箱求解多月标优化问题。目前,对于斜齿轮优化设计的研究主要集中在减小体积方面,一般不考虑传动平稳性。本文对减小体积和提高传动平稳可靠性两个目标进行了联合优化,这对于齿轮传动设计具有理论指导意义。 相似文献
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本文以体积最小化和功率使用率最大化建立了变速器多目标优化设计数学模型,并在可靠性的基础上,给出了约束条件;最后运用遗传算法对所建模型进行了实例测试,测试结果表明所建模型正确有效,对齿轮传动的设计具有参考价值。 相似文献
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基于MATLAB的汽车机械式变速器的可靠性优化设计 总被引:1,自引:0,他引:1
论述了变速器可靠性优化设计的必要性,以某轿车变速器为例,根据汽车动力性要求,在保证零件强度和刚度可靠使用的条件下,按变速器齿轮系质量最小建立了变速器可靠性优化设计的数学模型。然后,应用MATLAB优化工具箱进行了优化设计计算。设计结果表明:该数学模型是正确有效的,采用可靠性优化设计方法可以缩短设计周期和减小体积。 相似文献
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文章简要介绍了机械优化设计方法,以体积最小和中心矩最小建立变速器优化设计数学模型,并在可靠性的基础上,给出了约束条件;最后对所建模型进行了实例测试,测试结果表明所建模型正确有效,对齿轮传动的设计具有参考价值。 相似文献
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论述了变速器可靠性优化设计的必要性,建立了变速器系统可靠性分配模型,提出了变速器齿轮传动可靠性优化设计的方法和数学模型,并进行了实例分析计算。 相似文献
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本文将蒙特卡罗法应用于汽车变速器的可靠性优化设计中的可靠性建模过程,并采用上述方法对某轻型载货车的机械式四档变速器的前进档和常合齿轮进行设计,通过与原来选用的变速器的对应部件进行对比,新设计产品比原产品在体积(目标函数)上有明显的改进。 相似文献
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汽车运行中通过内部系统互相协调,基于发动机作用下带动整个汽车前行,变速器对于汽车运行速度控制具有重要作用。文章先分析了汽车机械式变速器,随后介绍了汽车机械式变速器可靠性优化设计,最后介绍了汽车机械式变速器多目标可靠性优化设计,包括可靠度分配、设计变量选择、可靠性设计,希望能给相关人士提供有效参考。 相似文献
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为提高钢筋混凝土简支梁的可靠性和稳健性,运用可靠性和稳健优化设计的理论,建立了适合可靠性稳健优化设计的多目标模型。针对可靠性稳健优化设计的多目标模型多属于高维多目标优化问题,把灰色理论中的关联分析引入粒子群优化算法中,根据灰色关联能够很好地分析目标矢量之间的接近程度,并能掌握解空间全貌的特点,提出了适合高维多目标优化问题求解的灰色粒子群算法。与传统方法相比,该方法更能迅速准确地得到钢筋混凝土简支梁的可靠性稳健优化设计信息。 相似文献
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变速器脱档故障的发生会使车辆突然失去动力,直接影响行车安全。通过对换档系统的结构原理分析,研究汽车变速器脱档故障产生的原因,并从设计角度提出解决方案,提升变速器的换档可靠性。 相似文献
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Kihan Kwon Minsik Seo Seungjae Min 《International Journal of Automotive Technology》2018,19(6):1081-1089
A reduction gear of an in-wheel motor vehicle is mounted between a traction motor and wheel, to increase the wheel torque and decrease the rotational speed. To improve the energy efficiency of a vehicle, the determination of the optimal gear ratio is an important factor in the design of the reduction gear. This paper presents an optimization procedure to obtain the optimal gear ratio of an in-wheel motor vehicle that minimizes the electric energy consumption. Using a model-based design, a dynamic simulation model of a vehicle was developed for an analysis of the energy efficiency. Owing to a variation in energy efficiency across drivers, a probabilistic driver model that includes driver characteristics is employed. To reduce excessive calculations, a surrogate model was constructed for the optimization. The optimal gear ratio for saving energy was obtained, and the usefulness of the proposed optimization procedure was shown through a comparison of the results of the optimal gear ratio and the energy efficiency achieved between deterministic and probabilistic approaches. 相似文献
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Zaigang Chen Wanming Zhai Kaiyun Wang 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2017,55(2):244-267
A gear transmission system is a key element in a locomotive for the transmission of traction or braking forces between the motor and the wheel–rail interface. Its dynamic performance has a direct effect on the operational reliability of the locomotive and its components. This paper proposes a comprehensive locomotive–track coupled vertical dynamics model, in which the locomotive is driven by axle-hung motors. In this coupled dynamics model, the dynamic interactions between the gear transmission system and the other components, e.g. motor and wheelset, are considered based on the detailed analysis of its structural properties and working mechanism. Thus, the mechanical transmission system for power delivery from the motor to the wheelset via gear transmission is coupled with a traditional locomotive–track dynamics system via the wheel–rail contact interface and the gear mesh interface. This developed dynamics model enables investigations of the dynamic performance of the entire dynamics system under the excitations from the wheel–rail contact interface and/or the gear mesh interface. Dynamic interactions are demonstrated by numerical simulations using this dynamics model. The results indicate that both of the excitations from the wheel–rail contact interface and the gear mesh interface have a significant effect on the dynamic responses of the components in this coupled dynamics system. 相似文献
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