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91.
采用循环追踪算法解决编队航天器交会控制问题。建立并推导了线性循环追踪算法和非线性循环追踪算法数学模型,提出了绕飞平面采用循环追踪控制,绕飞平面法向采用比例微分进行振动抑制的编队交会控制律。基于脉冲推力方式,对绕飞平面分别采用线性和非线性循环追踪的三航天器编队交会控制问题进行了仿真分析。仿真结果表明,提出的基于循环追踪的控制方式可满足编队航天器交会控制要求,航天器按顺时针运行轨迹交会于初始位置决定的参考中心,三航天器间相对距离、相对运动速度变化趋势基本一致,速度增量消耗较小,为航天器编队构形控制研究提供有益参考。  相似文献   
92.
由于存在各种高频内部扰动,高精度航天器通常需要进行隔振设计,而被动隔振装置被广泛采用。在被动隔振装置设计中,抑制共振响应峰和隔离中高频振动存在很强的冲突性,需要进行多目标优化设计。首先,建立了隔振系统的动力学模型,提出了以传递函数共振峰幅值和中高频衰减为目标函数的多目标优化模型;其次,提出了基于分解的多目标进化算法(MOEA/D)对单级和两级级隔振装置进行多目标优化的设计方法;最后,对某空间隔振装置进行了数值仿真,结果验证了本文算法的有效性。  相似文献   
93.
We consider several independent decision makers who stock expensive, low‐demand spare parts for their high‐tech machines. They can collaborate by full pooling of their inventories via free transshipments. We examine the stability of such pooling arrangements, and we address the issue of fairly distributing the collective holding and downtime costs over the participants, by applying concepts from cooperative game theory. We consider two settings: one where each party maintains a predetermined stocking level and one where base stock levels are optimized. For the setting with fixed stocking levels, we unravel the possibly conflicting effects of implementing a full pooling arrangement and study these effects separately to establish intuitive conditions for existence of a stable cost allocation. For the setting with optimized stocking levels, we provide a simple proportional rule that accomplishes a population monotonic allocation scheme if downtime costs are symmetric among participants. Although our whole analysis is motivated by spare parts applications, all results are also applicable to other pooled resource systems of which the steady‐state behavior is equivalent to that of an Erlang loss system. © 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2012  相似文献   
94.
In this article, we examine a model of terrorism that focuses on the tradeoffs facing a terrorist organization that has two qualitatively different attack modes at its disposal. The terrorist organization's objective is to successfully attack at least one target. Success for the target government is defined as defending all targets from any and all attacks. In this context, we examine how terrorist entities strategically utilize an efficient but discrete attack technology — e.g., suicide attacks — when a more conventional mode of attack is available, and the optimal anti‐terrorism measures.© 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2012  相似文献   
95.
自组网中的分布式多节点资源分配问题为NP完全问题,一般采用启发式算法进行协议设计,缺少严格的数学证明.基于博弈与纳什议价解理论,提出了一种分布式动态时隙分配策略,并通过严格的数学推导,证明了自组网中不同节点之间的时隙竞争问题存在纳什议价解,为自组网中分布式动态时分多址信道访问控制协议的设计提供了理论依据.  相似文献   
96.
装备采购委托代理关系分析   总被引:9,自引:1,他引:8  
针对目前采用的委托方对代理方的激励与约束机制设计,利用博弈论方法分析了监督策略成本会引起最优解迁移,并以实例予以了说明.同时,给出了军事经济效能观测指标的选择原则和多行动代理方的激励机制设计原则.  相似文献   
97.
基于梯度迭代法的一类追逃对抗模型研究   总被引:3,自引:0,他引:3  
针对一类追逃对抗问题,基于微分对策理论,建立了三维空间中的追逃对抗模型,进而得到了最优性条件和最优策略.运用梯度迭代法给出了模型的数值解,并做了实例分析.分析结果显示,该模型可以很好地应用于潜艇对潜艇、潜艇对水面舰艇等实际追逃对抗问题.  相似文献   
98.
We study markets for surplus components, which allow manufacturers with excess component inventory to sell to firms with a shortage. Recent developments in internet commerce have the potential to greatly increase the efficiency of such markets. We develop a one‐period model in which a monopolist supplier sells to a number of independent manufacturers who are uncertain about demand for final goods. After uncertainty is resolved, the manufacturers have the opportunity to trade. Because uncertainty is over demand functions, the model allows us to endogenize both the price of final goods and the price of components in wholesale and surplus markets. We derive conditions on demand uncertainty that determine whether a surplus market will increase or decrease supplier profits. Increased costs of transacting on the surplus market may benefit manufacturers, because of the impact of these costs on the supplier's pricing power. The surplus market can decrease overall efficiency of the supply chain, since the benefit of better allocation of components may be outweighed by an increased double‐marginalization effect. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2005.  相似文献   
99.
In this paper we present an application of the core solution concepts for multi‐objective games to a bank ATM network model. In these games, the worth of a coalition is given by a subset of vectors of the k‐dimensional space rather than by a scalar. The paper investigates how an ATM network model based on multi‐objective cooperative game theory could be used as an alternative way of setting interchange fees paid by the customer's bank to the one that owns the ATM. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2005  相似文献   
100.
Problems in counterterrorism and corporate competition have prompted research that attempts to combine statistical risk analysis with game theory in ways that support practical decision making. This article applies these methods of adversarial risk analysis to the problem of selecting a route through a network in which an opponent chooses vertices for ambush. The motivating application is convoy routing across a road network when there may be improvised explosive devices and imperfect intelligence about their locations. © 2011 Wiley Periodicals, Inc. Naval Research Logistics, 2011  相似文献   
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