共查询到14条相似文献,搜索用时 187 毫秒
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键合图理论在分析电液复合系统中具有很大的优势。金属带式无级变速器(CVT)是一种理想的装备内燃机的车辆变速器。本文建立了无级变速器的液压系统模型,根据该模型给出了加速行驶和紧急制动工况下的键合图并建立了数学模型,对紧急制动过程进行了仿真。结果证明键合图对于电液复合系统是一种有效的分析方法。 相似文献
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简要地介绍了键合图基本原理,建立了汽车八自由度振动系统的键合图模型,推导出状态方程。应用现代控制论方法,指出了应用键合图理论对悬架参数进行优化的方便性与实用性。 相似文献
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电磁式助力转向系统的车辆操纵稳定性的仿真研究 总被引:1,自引:0,他引:1
介绍电磁式助力转向系统的特点以及键图理论的建模方法,并通过键图理论建立电磁式助力转向系统模型,利用Matlab/Simulink对电磁式助力转向系统的键图模型进行仿真,实现汽车操纵稳定性的可视化仿真,使汽车性能的研究直观、简洁,并针对电磁式助力转向系统的结构特点,分析其对汽车转向性能的影响。 相似文献
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运用键合图理论,建立了以铅酸电池为动力源,直流斩波器为调速装置的直流电动汽车动态特性的仿真方程,分析了蓄电池荷电状态,无级变速传动速比等参数在整车加速行驶过程中的变化规律,从而为进一步开发并联式联合动力汽车奠定了理论基础。 相似文献
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键合图理论在汽车振动分析中的应用 总被引:6,自引:0,他引:6
本文应用键合图理论建立了汽车5自由度振动系统的键图模型并推导出状态方程。编制了动态仿真程序,计算了国产某轻型越野车和某轻型货车驶过三角形单个凸起时的振动响应,分析了悬架参数对振动的影响,指出了提高该车平顺性的途径。进行了轻型货车实车试验并将试验结果与计算结果做了对照,证明所选模型和所编程序是正确的和实用的。 相似文献
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键合图理论在汽车纵向角振动主动控制中的应用 总被引:1,自引:0,他引:1
本文应用键合图理论建立了汽车5自由度振动系统的键图模型并推导出状态方程,以垂直振动、纵向角振动能量最小和控制能量最小为目标函数,利用状态反馈原理代化出前悬架减振器的最佳控制力,对汽车驶过三角形单凸起时的振动响应进行了计算机仿真分析。结果表明,具有主动控制悬架的汽车,其纵向角振动得到明显的衰减。 相似文献
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键合图理论在汽车系统分析与控制中的应用 总被引:9,自引:0,他引:9
本文分析了键合图理论特点,简介了键合图基本原理及国内外发展概况,重点论述了键合图理论在汽车系统分析与控制的建模和仿真的应用。 相似文献
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Donald L. Margolis Assistant Professor 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1978,7(1):49-63
Bond graph modeling techniques are used to represent the normal mode dynamic behavior of uniform Bernoulli-Euler beams. The independent beam models are then coupled together to form a distributed system structure of arbitrary complexity. The resulting overall system bond graph is shown to yield the governing state equations in a straightforward manner. Then, through proper ordering of the equations, the normal modes and frequencies of the coupled system are easily obtained
This procedure is demonstrated for a vehicle A-frame structure. In addition, the bond graph model is modified to include primary and secondary suspension dynamics. 相似文献
This procedure is demonstrated for a vehicle A-frame structure. In addition, the bond graph model is modified to include primary and secondary suspension dynamics. 相似文献
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Dean Karnopp Professor of Mechanical Engineering 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1976,5(3):171-184
For the purposes of analyzing the stability and control properties of aircraft, automobiles, and ships, it is convenient to idealize the vehicle as a rigid body and to use a body-centered coordinate frame. A six-port bond graph is first developed which represents the nonlinear dynamics of a rigid body in a coordinate system rotating with the body. It is then shown how the graph simplifies if only lateral or longitudinal dynamics are studied. Finally, bond graphs for the type of stability studies in which the assumption of small perturbations permits linearization are shown for elementary models of automobiles and aircraft. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(3):171-184
SUMMARY For the purposes of analyzing the stability and control properties of aircraft, automobiles, and ships, it is convenient to idealize the vehicle as a rigid body and to use a body-centered coordinate frame. A six-port bond graph is first developed which represents the nonlinear dynamics of a rigid body in a coordinate system rotating with the body. It is then shown how the graph simplifies if only lateral or longitudinal dynamics are studied. Finally, bond graphs for the type of stability studies in which the assumption of small perturbations permits linearization are shown for elementary models of automobiles and aircraft. 相似文献