基于多粒度模型的导弹MDO方法研究

根据MDO环境的建模/仿真需求,针对某导弹多学科设计优化问题,分析了多粒度模型建模/仿真的必要性,以气动学科为例探讨了导弹MDO环境中多粒度模型的建模/仿真方法,研究了有限元分析软件FLUENT及其前处理软件GAMBIT的集成方法,并利用响应面分析、工程估算、数值计算三种方法对某导弹的气动学科进行多粒度的建模与解算,将输出的主要气动参数与风洞试验数据进行了比较与分析。研究结果表明多粒度模型的建模/仿真对提高导弹MDO效率具有重要意义。

Abstract：

According to the requirement of modeling and simulation in MDO environment, with consideration of missile’s Multidisciplinary Design Optimization problem, the necessity of modeling and simulation on multi-granularity model was analyzed. Taking pneumatic domain as an example, method of modeling and simulation on multi-granularity in missile’s MDO environment was discussed. The integration methods of finite element software FLUENT and its pre-processing software GAMBIT were studied. Through abundant experiments, data results of computing multi-granularity model were given using three methods, namely Response Surface Analysis, engineering prediction method and numerical computation method. Finally, comparison of the data got from above and from wind tunnel test was analyzed. The study results show that modeling and simulation on multi-granularity model are significant to improve MDO efficiency.     

基于多节点多核的样本级并行仿真技术研究

针对蒙特卡罗仿真的特点,开展了基于多节点多核环境的样本级并行仿真技术研究,设计实现了基于客户端/服务器架构的系统原型,给出了并行仿真实验流程。案例简析表明,该技术能够很好的利用局域网环境下普通PC计算节点以及集群计算服务器各计算刀片上多核处理器的计算能力,大为减少多样本闭环仿真运行时间,提高装备论证效率。

Abstract：

For the characters of Monte Carlo simulation, the research on sample-level parallel simulation based upon multi-node multi-core environment was carried out. The C/S based system prototype was designed and implemented. The experimental process was also given. Case analysis shows that this technology can make use of the multi-core CPUs’ computing power of both normal PC nodes and blades of the cluster server and greatly reduce the simulation time, thus improve the efficiency of equipment demonstration.     

采摘机械手虚拟设计与仿真系统的研究

在产品虚拟设计与仿真系统的开发中,为了实现智能设计,虚拟设计与企业产品设计的协同性、同一性和可重用性,实体建模属性的统一规范和标准定义十分必要。第一,首次提出和制定了可以用于虚拟产品建模与仿真的命名规则标准,为虚拟机械产品的设计提供参考。第二,构建水果采摘机械手虚拟设计与仿真系统的体系结构,建立了机械手机构设计模块,它包括机构的参数化设计和知识重用;第三,构建了机械手设计知识库和三维仿真模块;第四,已知机械手视觉获取目标的三维坐标,用软件实现反求机械手运动及其算法,并实现虚拟环境下的机械手对目标定位和采摘的三维仿真;第五,开发了水果采摘机械手虚拟设计与仿真系统。最后,通过三维仿真和实验样机对关键技术进行了验证。

Abstract：

In the development of product virtual design and simulation system, in order to achieve the cooperativity, identity and reusability of intelligent design, virtual design and enterprise product design, the unified standard and standard definition about solid modeling properties were necessary. First, the virtual product naming standards used for modeling and simulation as a reference for the virtual mechanical product design were firstly proposed. Second, the structure of the fruit picking manipulator virtual design and simulation system was constructed, and a manipulator mechanism design module was developed, including the parametric design and knowledge reuse. Third, the knowledge base and 3-D simulation module were constructed. Fourth, through the known 3-D coordinates of objects obtained by manipulator visual, the inverse about manipulator movement and algorithm were realized by software, and the 3-D simulation about the object positioning and picking was realized in virtual environment. Fifth, the fruit picking manipulator virtual design and simulation system was developed. Finally, 3-D simulation and experimental prototype were used to validate the critical technologies.     

高速卷绕头关重件建模及其工作过程仿真

高速卷绕头是化纤长丝纺丝设备单元机,其运动机构组成和工作性能直接影响着高速纺丝质量和技术本身。运用虚拟样机技术,通过实体建模软件Solidworks和系统动力学仿真分析软件ADAMS建立了包括兔子头、锭轴及压丝辊等关重件的运动学、动力学分析模型,对其动态特性进行了仿真计算和曲线分析。这不仅为机电一体化系统整机模型的建立打下了基础,同时,为实际物理样机关键部件的结构设计和参数优化设计提供了依据。

Abstract：

The high speed winder is an important spinning equipment, whose assemblies and their performances influence the spinning property and the spinning technology itself. The kinematics and dynamic model of its key parts were built in Solidworks, and based those models, the motion processes were simulated in ADAMS using virtual prototype technology. The kinematic curves of rabbit head, spindle and surface roller were obtained and analyzed. These play a foundation for the whole system simulation based on mechanical-electronic model, and provide evidences for the structure parameter optimization design of the physical equipment.     

基于处理器在回路的卫星编队仿真验证系统

为了验证星载计算机的软/硬件性能,建立了以两个星载计算机为核心的卫星编队仿真验证系统。介绍了该系统的软、硬件构成,重点解决了动力学仿真机与星载计算机CAN总线双向数据传输、动力学仿真机以及星载计算机的进程同步、星载计算机的无线通信以及实时驱动STK场景动画显示等问题。在成功实现系统的基础上,进行了双星编队自主维持控制仿真。仿真结果校验了系统设计的合理性以及软硬件接口的正确性。

Abstract：

To verify the software and hardware performance of the on-board computer, a demonstration simulation system for formation flying satellites was established based on two on-board computers. The software and hardware architecture of the simulation system were introduced, and the key problems of the data communication between the dynamic simulation computers and the on-board computers via CAN bus, the synchronization of the dynamic simulation computers and the on-board computers, the wireless communication of the on-board computers, and the real-time visualization animation by driving STK were solved. Based on the developed processor-in-the-loop simulation system, the autonomous formation keeping control for dual satellites was performed. The simulation results demonstrate the validity of the simulation system and the correctness of the software and hardware interfaces.     

HLA-based Simulation System for AAG Oppugning UAV

With the need of war and progress of science and technology, the UAV （UnmAnned Aerial Vehicle） has more and more military applications and it become more and more dangerous in battlefield situations. Using AAG （Anti-Aircraft Gun） to oppugn UAV is a good way, which is more economical than using missile. The system adopt the HLA （High Level Architecture） and it＇s related technologies, software development platform--pRTI, simulation modeling development tools which are MultiGen-paradigm Vega and Creator, which used AAG （antiaircraft gun） weapon system oppugning UAV as the scenario for constructing ground air defense environment. This research brought forth modern experiment means to analyze efficiency of ground air defense operation. This is agile, and extendable a system which has little network data redundancy.     

基于SimMechanics的两轮机器人建模与仿真

介绍了基于SimMechanics的两轮机器人机电控制系统建模与仿真研究的方法,建立了仿真模型并进行了运动控制仿真分析。利用MATLAB/Simulink强大的运算功能和SimMechanics提供的模块集,可以省略建立运动机构数学模型的推导过程,具有系统建模直观和仿真功能强大的特点,为机电控制系统的建模仿真提供一个方便的工具。

Abstract：

A method of modeling and simulation of Two Wheel Robot based on SimMechanics was discussed. The method takes advantage of the powerful computing function of MATLAB/Simulink and SimMechanics modeling block, It is a convenient and visual modeling tool in mechanical control system analysis and simulation.     

基于ABMS的体系效能评估框架研究

分析了基于信息系统武器装备体系基本特征和仿真评估要求,研究了基于Agent建模仿真(Agent based modeling and simulation, ABMS)方法的体系效能仿真开发和评估过程,针对基于信息系统武器装备体系仿真评估的要求,建立了由体系效能评估准备、联合作战想定编辑、ABMS体系仿真引擎、作战过程表现及战果统计,以及体系效能综合评估等组成的体系效能评估技术参考框架,并通过开发相关系统验证了框架的合理性和实用性。     

基于Extend与HLA的装备保障仿真集成研究

分析了Extend应用于装备保障仿真的不足,在讨论基于HLA的装备保障仿真系统的基础上,提出了Extend与HLA/RTI的四种仿真集成方式,依据Extend模型是否需要与HLA/RTI进行时间同步分别给出了集成方法,设计了基于适配器的Extend与HLA集成框架,详细说明了适配器的组成功能及工作流程,最后利用一个装备保障仿真系统应用实例证明了仿真集成的思路是可行的和必要的。

Abstract：

Because of the shortages of Extend software applied to equipment support simulation,four integration types between Extend and HLA were proposed about the building of equipment support simulation system based on HLA.According to whether Extend simulation model was synchronous to HLA/RTI on the mechanism of advance simulation time,the methods were respectively put forward to support these types,and an integration architecture between Extend and HLA was designed based on a general adaptor.The components and functions of this adaptor,and its running mechanism were detailedly analyzed later.Finally,an application of a simulation system proves that the idea to integrate the two platforms is feasible.     

面向方面的多智能体分布仿真平台设计优化

围绕大规模多智能体分布仿真平台的软件体系结构设计问题,提出软件设计的关注点空间模型,然后基于关注点设计—实现二元关系形式化描述横切关注点问题;使用面向方面建模方法对仿真平台中交错关注点进行分离;并对具体实现系统使用面向方面编程进行体系结构与代码优化。研究结果表明,方面的使用可以在不同关注点模块化中获得对系统软件系统结构设计的改良,且将使系统具有精简的代码,更少的设计和实现组件和组件间更低的耦合。

Abstract：

To deal with the software architecture problem of designing a large-scale distributed platform for multi-agent simulation, a concerns space model for software design was proposed. Then a binary relationship mapping from design concerns to implemented component was used to formalize the cross-cutting concerns relevant problem. With aspect-oriented modeling techniques, tangling concerns in the simulation platform were separated more explicitly. Finally, architecture and code optimization work was done on the implemented platform with aspect-oriented programming. Results show that the use of aspects allows the construction of target system with a significant improvement in the software architecture. Also, the use of aspects resulted in： fewer lines of code, fewer design and implementation components, and lower coupling between the components.     

基于Dymola的液压系统热力学模块化建模与仿真

以模块化建模方法为指导,提出了液压系统的热力学模块化建模方法。将液压元件工作机理分为容积型和阻尼型,建立容积型模块和阻尼型模块模型,由容积型模块和阻尼型模块单独或组合建立液压元件的模块化模型。采用Dymola对所建立的各元件模型进行仿真实现,建立了温度仿真模块库-ThermalHydraulic,可以实现面向液压原理图的可视化温度仿真。对模块库进行测试,验证了建模和仿真实现的可行性。

Abstract：

According to the modular modeling method,a thermal-hydraulic modular modeling method of hydraulic system was presented. Basic operating principles of all hydraulic components were divided into two types：volume and resistance. Volume model and resistance model were developed to represent the volume and resistance characteristic of hydraulic component. Component＇s modular model was established by signal or both of volume model and resistance model. Then,the hydraulic system temperature simulation modular library-Thermal Hydraulic was established by Dymola software,and the library could establish system model conveniently by visual modeling style based on hydraulic principle figure. At the last,the system test was made to evaluate the feasibility of modeling and simulation.     

基于复杂系统理论的信息化战争体系对抗仿真

以复杂系统理论为指导,采用还原论与整体论相结合的研究方法,基于复杂网络拓扑结构、多Agent理论与计算机仿真技术对信息化战争体系对抗作战行为演化的微观作用机制与宏观涌现现象复杂行为机理进行探索性研究,提出基于复杂网络的信息化战争体系对抗建模与仿真的技术路线,建立基于复杂网络与多Agent理论的信息化战争体系对抗仿真模型,分析信息化战争体系对抗建模与仿真的关键技术,探讨信息化战争体系对抗仿真建模的主要方法,并就基于复杂系统理论的信息化战争体系对抗建模与仿真的发展前景进行了展望。

Abstract：

The micro-interactions and macro-emergence mechanism of evolutive behavior on the combat System of Systems （SoS） created for Net-Centric Operations （NCO） was researched on the guidance of system complexity theory,complexity science and Complex System Theory （CST）,combining Reductionism with Holism,on basis of complex network modeling,multi-agent and computer simulation technology.Then,the technical scheme of Simulation of the SoS vs.the SoS of the Net-Centric Operations （MSSNCO） was put forward,which included constructing simulation models for the SoS vs.SoS of NCO on the basis of Complex Network （CN） and Multi-Agent theory.Successively,the key technique of MSSNCO was summarized;at the same time,the major modeling methods of MSSNCO were analyzed.Lastly,development tendency of CN-based MSSNCO was prospected.     

基于作战单元的装备综合保障仿真评估研究

针对装备综合保障仿真评估中的三个方面的问题,提出了基于装备作战单元的建模方法,说明了针对装备作战单元建立综合保障仿真评估Petri网模型的方法,并给出了两个具体的仿真流程,说明了具体系统实现的方法。最后,以某装备作战单元为例,将获取的该装备的实际保障工作相关数据,按照所建立的仿真模型的输入要求输入仿真模型,根据模型输出数据,对仿真结果进行分析评估。

Abstract：

According to the three problems in simulation of ILS evaluation, the means of modeling, the method of building Petri net model of ILS simulation to the equipment basic combat unit, and the method of building the system were put forward. Taking an equipment as an example, input the actual support data to the simulation model constructed, and then the simulation result was analyzed. It proves that the model is correct and feasible.     

基于SOA的分布并行SMP2仿真体系结构研究

为了提高SMP2模型在分布式环境下的互操作与可组合性,提出了基于模型驱动架构的分布并行SMP2仿真体系结构。针对分布式环境模型组合的特点,提出了基于代理的SMP2仿真模型分布式组合方法。针对在分布式环境下进行模型调度的两个问题,提出了基于时间管理器和消息管理器的仿真模型分布式并行调度方法。设计实现了原型系统,包括基于空消息的异步仿真协议时间管理器、基于WebService的消息管理器、仿真控制管理器和仿真应用客户端。最后并以导航系统DOP分析仿真为例,验证了方法的可行性,并讨论了下一步研究方向。

Abstract：

To enhance the interoperability and composability of the Simulation Model Portability Standard 2 （SMP2） in distributed environment, a simulation architecture based on Service-Oreinted Architecture （SOA） was promoted. To satisfy the composition and schedule requirment under destributed environment, a proxy-based model composition method and a model schedule method based on time manager and message manager were studied. A prototype system was designed and implemented, including CMB-based time manager, web-service-based message manager, simulation control manager and simulation client. Finally, an application of Navigation System DOP analysis simulation demonstrates the validity and feasibility of the method.     

Best-retransmission count selection for environment optimization over wireless heterogeneous networks

This paper proposes an environment-aware best- retransmission count selected optimization control scheme over IEEE 802.11 multi-hop wireless networks. The proposed scheme predicts the wireless resources by using statistical channel state and provides maximum retransmission count optimization based on wireless channel environment state to improve the packet delivery success ratio. The media access control （MAC） layer selects the best-retransmission count by perceiving the types of packet loss in wireless link and using the wireless channel charac- teristics and environment information, and adjusts the packet for- warding adaptively aiming at improving the packet retransmission probability. Simulation results show that the best-retransmission count selected scheme achieves a higher packet successful delivery percentage and a lower packet collision probability than the corresponding traditional MAC transmission control protocols.     

Novel robust fault diagnosis method for flight control systems

A novel robust fault diagnosis scheme, which possesses fault estimate capability as well as fault diagnosis property, is proposed. The scheme is developed based on a suitable combination of the adaptive multiple model （AMM） and unknown input observer （UIO）. The main idea of the proposed scheme stems from the fact that the actuator Lock-in-Place fault is unknown （when and where the actuator gets locked are unknown）, and multiple models are used to describe different fault scenarios, then a bank of unknown input observers are designed to implement the disturbance de-coupling. According to Lyapunov theory, proof of the robustness of the newly developed scheme in the presence of faults and disturbances is derived. Numerical simulation results on an aircraft example show satisfactory performance of the proposed algorithm.     

舰载相控阵雷达仿真系统研究与实现

对于舰载相控阵雷达这类复杂系统的仿真,软件系统的设计起着至关重要的作用。为了更有效的进行舰载相控阵雷达的仿真研究,在模块化的基础上,引入了分层设计的思想,建立了分层模块化、易于扩展的仿真软件体系结构,给出了总仿真流程,并着重分析研究了其核心模块的功能、原理和实现流程,构建了仿真软件系统。仿真结果充分验证了模型和方法的可行性和有效性。

Abstract：

The design of software system is very important to the simulation of complex system such as shipborne phased array radar. To make the research of shipborne phased array radar simulation more efficiency, the idea of layered design was imported based on modularization, a hierarchy modularized and easy expansible simulation software architecture was established, and the whole simulation flow was suggested, the function and the theory and the realization flow of the core model was mainly researched, and the simulation software system was developed. The result of the simulation has validated the model and the method.     

基于虚拟样机技术的航天器配重设计与实现

将航天器的质量、质心和转动惯量调配到一定目标范围内,可以降低航天器姿态控制的难度,提高航天器姿态控制的准确性,利用虚拟样机技术和数值优化技术的相关软件设计了航天器配重仿真优化方法,能够对航天器进行构件设计,仿真装配、动力学分析和可变装配参数优化,能够支持构件可变质量优化和装配位置优化,最后通过空间机器人地面气浮仿真平台的配重实例验证了配重方法的正确性,结果表明该方法可以有效地对航天器进行配重优化。

Abstract：

The mass, centroid and moment of inertia of spacecraft, regulated at a certain target range, can reduce the difficulty and improve accuracy in spacecraft stance control. The relative software of virtual prototyping and numerical optimization techniques were used for designing the methods of simulation and optimization in spacecraft balance. The methods could make spacecraft devised in components, simulation assembly, dynamic analysis and parameter optimization of variable assembly and support the components of variable quality optimization and assembly location optimization. The accuracy of balancing platform was validated by the balancing example of space robot ground floatation simulation platform. The result shows that spacecraft can be effectively balanced and optimized by this method.     

基于HLA的潜艇作战仿真平台设计与实现

建立了集潜艇装备仿真、反潜CGF仿真、武器对抗仿真、海洋环境仿真为一体的潜艇作战模型体系,采用HLA仿真体系结构构建了完整的潜艇作战分布式仿真平台,系统提供有效的仿真数据收集、存储及分析功能,可以在＂虚拟战场环境＂中开展对抗条件下的潜艇作战效能评估、作战使用方法研究等工作,系统通过扩展接口可与其他非HLA仿真系统互连从而扩展了研究范围。

Abstract：

A comprehensive simulation model framework was established,which included equipment models,anti-submarine forces model,weapon counterwork model,ocean environment model. A HLA-based distributed simulation system for submarine warfare was built to form a virtual ocean combat space,in which research works could be carried out by the means of counterwork simulation. This system provides the functions of simulation data collect,access and analysis,also this system can interlink with other non HLA systems through extension interface.     

Data association based on target signal classification information

In most of the passive tracking systems, only the target kinematical information is used in the measurement-to-track association, which results in error tracking in a multitarget environment, where the targets are too close to each other. To enhance the tracking accuracy, the target signal classification information （TSCI） should be used to improve the data association. The TSCI is integrated in the data association process using the JPDA （joint probabilistic data association）. The use of the TSCI in the data association can improve discrimination by yielding a purer track and preserving continuity. To verify the validity of the application of TSCI, two simulation experiments are done on an air target-tracing problem, that is, one using the TSCI and the other not using the TSCI. The final comparison shows that the use of the TSCI can effectively improve tracking accuracy.