地面无人作战系统作战效能评估方法研究

针对地面无人作战系统型号新、区别于传统有人装备的特点,分析了基于感知、决策、行动作战环的地面无人作战系统作战效能释放机理,设计了包括整体和分领域2个层次的作战效能指标体系,提出了以综合试验为主、分要素试验为补充的作战效能试验方案设计思路,构建了末端效能指标计算、作战效能聚合计算和评估结果分析等主要评估分析模型,为有效开展地面无人作战系统作战效能评估提供了科学方法.     

作战系统互操作应用效能的仿真评估研究

作战系统互操作是实现多军种联合作战并进而在战争中取得信息优势的关键技术.实现作战系统互操作必须解决的一个问题是互操作的应用效能评估,即评估互操作可以在何种程度上提升作战系统的应用效能.文章旨在通过对作战系统互操作应用效能评估方法进行仿真来证明评估指标体系和评估方法的有效性.仿真系统基于已建立的作战系统互操作的应用效能评估指标体系和综合评估方法,通过Vc 进行了实现.文中给出了仿真评估的运算步骤和计算实例.仿真结果表明了该作战系统互操作应用效能评估方法的可行性.     

基于扩展贝叶斯理论的飞机液压系统效能评估北大核心

飞机液压系统准确效能评估,是分析实际作业中飞机液压系统运行情况及其结构功能优化设计的基础。针对传统效能评估方法普遍依赖专家决策的问题,以贝叶斯理论为基础,提出了一种考虑评估指标数据可信度的扩展贝叶斯效能评估模型。模型利用提出的改进灰色关联分析法获得评估指标数据的可信度量化值,将其与指标数据作为评估指标的二维数组表达,并通过扩展贝叶斯理论进行专家数据和仿真数据等异构数据的分析融合。以某型飞机液压系统为例,验证了上述方法在飞机液压系统效能评估中的有效性,并可用于多源数据的系统效能评估中。     

改进灰色聚类法的飞机液压能源系统效能评估

由于飞机液压能源系统缺乏完善的效能评估指标体系和效能评估方法,构建了一个包含液压能源系统关键部件和参数的两级效能评估指标体系.结合层次分析法和熵权法对指标权重的主观性进行修正,提出了基于改进灰色聚类法的综合评估模型,同时将指标划分为优秀、良好、中等、较差四个灰类,最后综合各指标所属灰类的白化权函数和权重得到系统的聚类系数,确定系统的效能等级.以某型飞机液压能源系统为例,得到了切合实际的效能评估结果,验证了方法在液压系统效能评估中的有效性.     

基于集对分析的冲击桥作战效能评估

该文给出了冲击桥的评价指标体系及确定不同指标权重的方法,确定了用集对分析的原理对冲击桥作战效能进行评估的步骤,最后用一组实例对评估方法进行了验证。实例结果表明该评估方法能相对比较客观地对评价对象进行评估。     

基于信息系统的体系作战指挥控制能力评估研究

采用层次分析法和模糊综合评估法,对基于信息系统的体系作战指挥控制能力评估的问题进行了探索.依据指挥控制能力的定义,分析并建立了基于信息系统的体系作战指挥控制能力的指标体系,运用层次分析法确定了各指标要素的权重,针对信息化部队的体系作战指挥控制能力采用三级模糊综合评估法进行了综合评价.实验结果表明该方法能够很好的解决指控能力评估中存在的不确定性问题.     

基于Fuzzy-AHP的GUCS体系融合度评估北大核心

地面无人作战系统是未来陆上无人作战的代表装备,体系融合度评估是其在装备发展论证过程中的一个重要方面。为评估其体系融合度,分析了地面无人作战系统作战使命任务,提出了地面无人作战系统体系融合度评估指标体系构建思路,构建了地面无人作战系统体系融合度评估指标体系。提出了一种基于Fuzzy-AHP的地面无人作战系统体系融合度评估方法,确定不同层级的评价指标权重并进行多级模糊综合评价,得到体系融合度评估结果,经实例验证上述方法能较好的满足体系融合度评估需求。     

指挥自动化系统综合效能评估系统设计

本文旨在研究如何建立一个具备科学性、灵活性和较强重用性的指挥自动化系统综合效能评估系统。根据指挥自动化系统的特点,研究了评估原则、指标体系和评估方法,在此基础上提出了评估系统的设计方案,给出了典型的综合效能评估方案,完成了评估系统的实现。     

基于 GA-BP 网络的工程兵桥梁爆破方案评估模型

工程兵地爆分队对桥梁实施爆破过程复杂,所受影响因素多,爆破方案难以确定,为了更好的解决这一问题,构建了以爆破目标、爆破实施人员、爆破工具器材为主的桥梁爆破方案评估指标体系,并给出了基于 GA-BP 神经网络模型来研究桥梁爆破方案评估的方法,确立了 GA-BP 网络桥梁爆破方案评估模型.以工程兵某部执行桥梁爆破任务为例进行实例验证,采用该网络模型能够快速对待选方案进行较准确的评估,并筛选出较好的方案.结果表明该网络模型具有很强的可行性和有效性.最后给出了工程兵增强爆破作业效果的建议     

计算机仿真系统评估方案研究

分布式交互是实现复杂系统仿真的重要手段,各个成员仿真系统的性能至关重要,现有评估方法主要关注于仿真系统、模型的正确性和可信度,而没有从全面综合的角度来分析仿真系统自身的质量。因此,建立了能够整体评估仿真系统性能的指标体系,构建了仿真系统二级模糊综合评估模型,并应用该模型对野营保障模拟训练系统进行了评估分析,得出了较为合理的评估结论,验证了评估方案的可行性和易操作性。     

飞机拦阻网微机自动立网系统的设计

分析了所研制的飞机拦阻网微机自动立网系统的工作原理、组成和功能；该立网系统是飞机拦阻设备中自动立网的控制部分，能够计算飞机在跑道终端的滑跑速度，在飞机的滑跑速度不符合安全规定的情况下，可以快速、准确地做出判断，产生立网控制信号，立起拦阻网拦截色机，同时发出报警信号；在飞机拦阻网中应用泼自动立网系统能够提高飞机安全着陆的可靠性，有着重要的军事意义和经济效益。     

On the application of multiple criteria decision making to a problem in defence systems acquisition

Multiple criteria decision theory (MCDT) approaches to choice making are receiving increased attention due to the increasing importance society places on incorporating the non-commensurate and conflicting objectives of a situation into the choice making process. Process algorithms for multiple objective optimization theory (MOOT) and multiple attribute utility, theory (MAI5T) motivated a combined approach which utilizes, in an efficient manner, the complementary aspects of both processes. An appropriate application for the multiple criteria approach is a specific military equipment acquisition involving aircraft retrofit. The retrofit of a particular aircraft with equipment designed for a mission which the aircraft was not originally designed to fly typically requires a large systems effort. Specifically, the retrofit of an aircraft with sophisticated electronic warfare (EW) equipment has historically involved inefficiencies and inadequacies including schedule and budgetary overruns and a lack of initially specified final product performance. Development of a useful combined MOOT/MAUT process seems a logical choice to ameliorate the difficulties of current electronic warfare aircraft retrofit design (EWARD) processes. This paper generates a set of criteria for evaluation of alternative retrofit systems in the defence systems acquisition cycle and develops an efficient framework for EWARD through extension of a MCDT approach for this application.     

基于模型的动态评估军事决策方案的方法研究

对军事决策方案(决心方案)的评估，是军事决策过程中的一个重要环节，其评估结论直接影响军事决策的结果。提高方案评估的科学性和可信度，是军事辅助决策迫切需要解决的问题。该文通过对军事决策方案及传统评估方法存在问题的分析，提出了基于模型的动态评估军事决策方案的方法，其核心是采用定性与定量分析方法的有机融合来实现对方案的评估，并提出实现的途径和重点需要解决的问题。     

Product-service system engineering characteristics design for life cycle cost based on constraint satisfaction problem and Bayesian network

A product-service system (PSS) has many engineering characteristics (ECs), their design is a critical work in PSS planning, which has an important influence on the cost and quality of PSS. How to design a reasonable PSS-ECs scheme, and evaluate its life cycle cost (LCC) is a challenging task. Aiming at the PSS-ECs design for LCC, this paper proposes a new PSS design method, it first treats and models the design of PSS-ECs as a customer requirements-based constraint satisfaction problem (CSP) for finding an initial set of satisfied PSS-ECs schemes, and then it evaluates these schemes based on Bayesian network (BN)-based LCC estimation model for finding an optimal scheme as a solution. Constructing a BN describing the uncertain relationships between PSS-ECs and LCC is the core of this research. By combining existing R&D data and expert experience, Bayesian estimation and arithmetic averaging are used to estimate the conditional probability in BN. Take a subway bogie and its maintenance service in a Chinese company as an example to verify the proposed method. The results show that the proposed method can effectively solve the problem of PSS-ECs design for LCC, it also shows that this method has positive significance in realizing engineering knowledge consolidation, assisting designers in exploring design space, and improving the rationality of design decisions.     

Intermittent failure detection of multiple electrical connectors in EWIS

Electrical wiring interconnection system (EWIS) of civil aircraft has been paid more attention in recent years, and intermittent failure detection of electrical connectors in EWIS is a challenging problem. This paper presents a sliding mode observer (SMO) approach for the intermittent failure detection of an aircraft electrical system with multiple connector failures. The mathematical model of the aircraft electrical system which contains multiple connector failures is established for transforming the intermittent failure detection problem into observer-based multiplicative faults isolation and estimation problems. A set of adaptive sliding mode observers are designed to locate the failure connectors preliminarily, the observers can adapt the unknown upper bound of the faults. Furthermore, a fault-reconstruction scheme applying the equivalent output error injection principle is proposed for fault estimation, where the characteristic parameters of connecters are reconstructed to identify the failures. Finally, a numerical example is provided to show the effectiveness of the proposed method.     

飞机俯仰运动自抗扰控制器设计

提出了利用自抗扰控制器在大包线范围内设计飞机俯仰运动控制器的新方法．利用二阶自抗扰控制器补偿系统模型扰动和外扰，实现了纵向运动俯仰角变量的跟踪控制．自抗扰控制器直接依据飞机的非线性模型，符合飞机动力学模型摄动大的特点，在很大的包线范围内不需要改变控制器的结构和参数，简化了飞行控制律的设计过程．大包线范围内的仿真结果表明，系统具有良好的动态和稳态性能，控制器具有很强的鲁棒性，为解决大包线范围内的飞行控制问题提供了一种有效的新途径．     

离散时间系统的主动容错控制及飞控应用

针对处理一类线性不确定离散时间系统多重的、同时发生的、突变的舵机故障问题,提出了一种新的故障估计方案。该方案考虑了两种舵机故障模型:舵机卡死和舵机失效。所提出的舵机故障估计方案适用于为战机设计一个H∞容错飞行控制器,用于以零横向加速度跟踪飞机转弯角和俯仰率指令。仿真结果表明,采用H∞容错飞行控制器能够取得较好的控制效果。     

支线飞机试飞测控系统总体设计

根据新支线飞机研制之中上海飞机制造厂承担的试飞任务,提出试飞测控系统的需求,根据当前国内外试飞测控技术的发展状况,结合该飞机项目的特点,制定了上海飞机制造厂新支线飞机飞行试验测控系统的设计和实施方案.介绍了该方案的具体内容.     

Sliding mode observers for a class of linear parameter varying systems

In this paper, a new framework for the synthesis of a class of sliding mode observers for affine linear parameter varying (LPV) systems is proposed. The sliding mode observer is synthesized by selecting the design freedom via linear matrix inequalities ( LMIs ). Posing the problem from a small gain perspective allows existing numerical techniques from the literature to be used for the purpose of synthesizing the observer gains. In particular, the framework allows affine parameter‐dependent Lyapunov functions to be considered for analyzing the stability of the state estimation error dynamics, to help reduce design conservatism. Initially a variable structure observer formulation is proposed, but by imposing further constraints on the LMIs, a stable sliding mode is introduced, which can force and maintain the output estimation error to be zero in finite time. The efficacy of the scheme is demonstrated using an LPV model of the short period dynamics of an aircraft and demonstrates simultaneous asymptotic estimation of the states and disturbances.     

Differential geometry based active fault tolerant control for aircraft

This work shows how to use a differential geometry tool to design a novel nonlinear active fault tolerant flight control system for aircraft. The proposed control scheme consists of two main subsystems: a controller, which is designed for the nominal plant, and a fault detection and diagnosis module, which provides fault estimation. A further feedback loop exploits the fault estimation to accommodate faults affecting the system. The estimate convergence and the stability of the active fault tolerant flight controller are theoretically proved. Finally, high fidelity simulations show the effectiveness of the scheme.