基于虚拟集成技术的ESP硬件在环仿真

针对汽车电子稳定性控制系统的开发,提出了集成ADAMS/Car的整车虚拟样机、MATLAB/Simulink的虚拟控制器和LabVIEW的测控平台的汽车电子稳定性控制的硬件在环仿真方法（VCHIL）,阐述了该方法的实现原理,讨论了基于虚拟集成技术的硬件在环仿真系统的组成及其相互关系,并以此为向导,研制了汽车电子稳定程序（ESP）的硬件在环仿真实验平台,并进行了实验验证。

Abstract：

Aiming at the development of ESP system,hardware-in-loop simulation method based on virtual cross technology （VCHIL）,which combined virtual modal by ADAMS/CAR,virtual controller by MATLAB/Simulink and LabVIEW platform,was addressed.The realization principle of the method was introduced.The structure and relation between parts of hardware-in-loop simulation system based on virtual cross technology were discussed,and according to these,the hardware-in-loop simulation testing platform was developed.Test on this platform was performed and the results were analyzed and compared.     

船舶运动控制硬件在环仿真系统的研究

目前众多学者致力于将当前先进的控制理论应用到船舶运动控制领域,但在实际船舶上验证这些先进的控制算法面临很多困难,为此,设计并实现一套船舶运动控制硬件在环仿真系统。该系统包括船舶运动DSP控制器,船舶运动仿真系统,控制与监测系统三部分,对相关硬件电路和软件设计进行了研究。系统测试结果表明该系统性能良好,为在实验室环境下进行船舶运动控制算法研究和船舶运动控制器开发提供了一个有效的测试平台。

Abstract：

Many scholars devote to applying current advanced control theories to the ship motion control.However,there are many difficulties in verifying the performance of the control theories.In the view of this contradiction,a hardware-in-loop simulation system for ship motion control was designed,which includes ship motion controller based on DSP,ship motion simulation system,and control-monitoring system.The relative design of hardware and software was discussed.The simulation results show that the proposed hardware-in-loop simulation system has satisfactory performance and it can provide an effective test platform for the study of the ship motion control theories and the development of the ship motion controller in the laboratory environment.     

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.     

基于BOM的STSS系统仿真设计与实现

以空间跟踪与监视系统（Space Tracking and Surveillance System,STSS）为仿真对象,基于高层体系结构（High Level Architecture,HLA）分布式仿真技术设计、开发STSS仿真系统。分析了STSS技术特点及仿真需求,按照基本对象模型（Base Object Model,BOM）开发标准构建系统的层次化联邦架构,提高了系统开发效率和模型的可重用性。通过对不同场景的多次仿真,初步验证了STSS的性能指标,说明该系统具有良好的适应性。

Abstract：

Based on HLA distributed simulation technology, design and implementation of STSS simulation system, the technical traits of STSS system and demands of simulation were analyzed. According to BOM development standard, a framework in hierarchy of STSS simulation system was constructed, which has effectively improved the efficiency of system realization and the capability of model reuse. By simulating the different scenarios repeatedly, the performance parameter of the STSS simulation system was tentatively verified, and applicability of the simulation system was proved.     

基于KD-DRT的雷达射频信号半实物仿真系统实现

首先介绍了分布实时仿真系统的四层体系结构,从而引出支撑系统KD-DRT;再提出采用这种分层的分布实时仿真技术构建精确制导武器的雷达射频信号半实物仿真系统;对系统模块的层次化分解以及分布系统的时间同步策略进行了分析,最后给出了系统的具体实现结构,验证了KD-DRT针对雷达信号级分布实时仿真的有效性。

Abstract：

4-tier hiberarchy was put forward as the standard architecture of distributed real-time simulation system, and KD-DRT was introduced as a supporting platform. A radar RF signal simulation system for precisely guided missile was constructed based on KD-DRT. The system modules were arranged to different layer according to its time restriction and the time synchronization method of the distributed system was studied. At last, the simulation system was constructed and the efficiency of KD-DRT in simulation of radar signal was proved.     

面向组件的仿真系统构建方法研究

随着软件组件技术的不断发展,基于组件的软件开发方法在仿真领域逐渐被接受,特别是基于分布式的仿真软件开发。SISO（仿真互操作标准组织）提出的BOM（基本对象模型）通过标准化规范描述面向组件的仿真模型,为构建具有可扩展、可组合和可互操作的仿真系统提供了面向组件的实现技术。首先,描述BOM的模板结构及其体系结构,设计基于BOM的仿真模型组件结构,分析这种结构的仿真模型组件间的互操作性;接着从概念层次、联邦成员层次和联邦层次三个不同层次提出面向组件的仿真系统构建方法;最后讨论一种通用的仿真运行框架,通过组合不同的仿真模型组件实现仿真系统的快速构建。

Abstract：

With the development of the software component technique, the components based software development method is accepted in the simulation domain and specifically in the distributed simulation’s software development. The standard of Base Object Model （BOM） developed by SISO （Simulation Interoperability and Standard Organization） is the component-oriented specification of simulation models which gives a component-oriented technique to construct extensible composable and interoperable simulation systems. Firstly, the template and architecture of BOM were described based on which the structure of simulation model components were designed and the interoperation between them were analyzed; Secondly, the processes for constructing simulation systems were argued from the concept level and the federate level to the federation level; Lastly, by composing various of simulation model components, the general simulation running framework which was argued provided component-oriented capabilities to rapidly building simulation systems.     

数字几何体模仿真呼吸运动

仿真在补偿呼吸运动的PET/CT成像研究中起着非常重要的作用。许多方法被开发出来用于仿真呼吸运动。然而,它们在使用中存在一些局限性,例如操作者的干预,花费太高或者是仿真时间太长等。提出一种新的简单方法,用GATE软件包来实现呼吸运动的仿真。GATE不仅在SPECT/PET仿真,而且在不同的模型仿真构建方面也提供了非常强大的功能。根据呼吸运动,在GATE的配置中就可以确定体模运动的特征。GATE可以生成象柱,球和椭圆等形状的几何体模。组合体模的运动特征和形状就可以仿真呼吸运动。仿真的结果表明,在开发和评估SPECT/PET补偿呼吸运动技术时,GATE产生的运动体模,提供了一种可选的方法用于呼吸运动的仿真。这种方法与传统方法相比,运算量小,体模设置简单。

Abstract：

Simulation plays very important role in the research of compensation respiratory motion in PET/CT imaging. Many approaches were developed to simulate respiratory motion. However,they have some limitations on operator intervention,much cost or time consuming in study. A new simple approach for respiratory motion simulation was proposed by using GATE （Geant4 Application Tomography Emission） software packages. GATE provides very strong functions to simulate not only SPECT/PET,but also different phantom construction. Phantom motion characteristics can be determined in GATE configuration in terms of respiratory motion. Geometric phantom were generated by GATE including the shape of cylinder,sphere and ellipse. Combination of the characteristics of phantom motion and shape may simulate respiratory motion. The simulation results demonstrate that the phantom generated by GATE may provide as one alternative useful method of simulating respiratory motion for the development and the assessment of respiratory motion compensation in SPECT/PET imaging. This approach has the features of less computational simulation and phantom setting up simply comparing with conventional phantoms.     

分布式视景仿真技术综述

分布式视景仿真技术是可视化仿真与网络化仿真交叉融合而发展起来的仿真技术。对分布式视景仿真的学科范畴进行了探讨,追溯了分布式视景仿真的技术起源,对其发展脉络进行了划分。对该技术多年来的应用和研究现状进行了分析和评述,最后就其今后的研究发展方向作了预想。研究成果有助于该项技术理论和应用体系的丰富和完善。

Abstract：

Distributed visual simulation （DVS） technology is an intersecting and syncretic simulation technology including visual simulation and network simulation. The subject category of DVS was discussed, and the technology origin and development process were backward. The application and research status were analyzed. At last, the future research direction was expected. These research harvests can help building the theory and application system of DVS.     

基于元胞自动机的道路交通堵塞仿真研究

意外交通事件的发生会干扰正常的交通流秩序,甚至引起交通堵塞。建立交通意外事件影响下的交通流仿真模型,将能有效地对拥堵传播控制进行研究。对堵塞车流中车辆个体的行为特征进行了详尽分析后,通过设置＂挤车变道＂规则对现有的元胞自动机模型进行了改进,建立起一种适合描述交通堵塞传播的元胞自动机模型。该模型能够较为准确地模拟出堵塞交通流的时空传播过程。最后,利用本模型探索了主要交通流参数对堵塞传播的影响规律。

Abstract：

Traffic incidents will reduce the traffic capacity,and even cause the traffic congestion. So building an effective simulation model is necessary to study the rules of congestion＇s propagating. The behavioral characteristics of individual vehicles in the traffic jam are different from others,but the current traffic CA （cellular automaton） models neglect those differences. The differences were taken into account by introducing some new rules into the old CA model. With the new CA model,the process of traffic congestion＇s propagating could be simulated correctly. Lastly,the relationships between congestion＇s propagating and some traffic parameters were explored by this model.     

On the Subsidy Mechanisms for Urban Public Traffi

1　IntroductionThe urban traffic transportation plays a key role in the social economic development.However,itnormally suffers losses to some certain degrees in China. The governmenthasto provide a lot of funds to it,and this causes a heavy fiscal burden.Itis urgently neededto establish a reasonable mechanism of subsidization for the urban public traffic in China.The subsidy policy for urban public traffic enterprises can be classified into twocategories. One is thatthe governmentand a traff…     

仿真交通流混沌特性研究

基于非线性跟驰模型建立了由五辆机动车组成的动态仿真模型,利用Matlab软件产生了五辆机动车的仿真交通流,给出了在一定参数组合下前后车辆之间的车头间距、速度差随时间变化的过程曲线.并结合实际交通系统的特点,对仿真结果做了理论分析.基于混沌时间序列分析方法,提出了证明非线性跟驰模型产生的仿真交通流具有混沌特性的一种方法,并分析了模型参数对仿真交通流动态特性的影响.该研究结果有助于进一步理解实际交通流系统的动态特性,并为短时交通流预测、诱导方法和智能交通控制提供理论依据.     

一种经验性的自相似流仿真算法

设计了一种经验型的自相似流生成方法。该方法以实测数据流的统计特性为基础，能实时在线产生参数可变的自相似流。由于算法的主要参数取自应用层的统计特性，从而说明了用户行为对自相似性的影响。本文同时以仿真的方法讨论了经验型算法的性能，认为能较好反映原数据流的特征。该算法可以作为在线流量生成器的参考。     

基于元胞自动机的微观城市道路混合交通仿真

介绍了现有交通仿真软件相对于国内路况存在的很多不足，如缺少自行车、行人的模拟等，结合原有的交通仿真模型和我国自行车／行人交通特性建立了新的混合交通流微观仿真模型，并给出了混合交通流仿真的实现思想。新的仿真系统原型以元胞自动机模型为基础，同时定义了符合国内道路状况的元胞自动机规则。最后，给出了该交通仿真系统原型的实现结果和结论。     

混杂交通微观仿真初探

中国的城市交通大多数属于混杂交通,具有机动车、自行车、行人等3种交通参与者混行,以及违规现象普遍的特点。文章介绍了对混杂交通微观仿真的初步研究,重点介绍了交通参与者模型的构建,尤其是其决策机子模型的构建。在文章的最后,给出了一个混杂交通系统中的无信号交叉口的仿真实例,仿真效果已经初步表现出混杂交通的特点。     

海上交通仿真综述

海上交通仿真是海上智能交通运输系统（MITS）的一项重要内容,介绍了海上交通仿真的研究意义和研究内容,描述了国内外海上交通仿真的发展历程和研究现状,凝炼出海上交通仿真的关键技术。对基于仿真的海上交通领域的研究煞点问题,相关理论问题、方法和主要应用领域进行了探讨。最后指出了当前海上交通仿真研究的趋势。     

交通仿真的发展及研究现状

交通仿真是智能交通运输系统(ITS)的一项重要内容，文章从交通仿真的研究意义和研究内容出发，介绍了交通仿真的三种模型，并重点介绍了其中的微观仿真模型，作者在文中描述了国内外交通仿真的发展历程和研究现状，并对其中的一些典型软件和模型作了介绍，文章的最后还指出了当前交通仿真研究存在的一些不足之处。     

城市道路交通多状态演化下的连续仿真技术研究

为实现交通多状态演化下的仿真连续性,解决多状态交通只能利用单状态交通进行多次仿真实现的问题,利用VISSIM仿真软件的二次开发接口,构建连续交通事件仿真中间件模型,将原本两个相关联的交通仿真事件进行联合驱动.利用C#与数据库进行VISSIM-COM二次开发,选用重庆市渝中区钢花路与柏华街交叉口的调查数据,对其"平时-拥...     

人工交通系统的研究初探

人工交通系统是人工社会在交通仿真系统中的直接应用，是复杂系统研究对传统仿真方法进一步发展的需求和计算能力不断提高的必然结果。首先介绍了人工交通系统的概念，分析了人工交通系统与交通仿真系统的区别，接着阐述了人工交通系统的研究基础、自下而上基于代理的建模方法、以及人工交通系统的研究方式。最后给出了结论和对下一步工作的展望。     

换道行为对交通流宏观特性的影响

换道行为对交通流宏观特性的影响至今未得到充分认识.基于车辆行驶有限状态自动机框架,用微观仿真方法对不同交通情景下换道行为的影响进行了研究.结果表明在同质交通流中换道行为对宏观特性没有显著影响.对异质交通流,如果车辆之间存在最大速度差异,则在中低密度区换道行为能显著提高交通流量;如果车辆之间只存在加速性能差异,则换道行为对交通流宏观特性没有显著影响.说明换道行为对交通流宏观特性的影响与车辆差异性质以及交通流密度有密切关系,     

基于RTI的交通态势实时仿真技术研究

微观交通仿真系统一般主要是以历史调查数据的统计分析结果为依据进行仿真,为了能够更加真实地反映交通的状况,提出了以实时采集的交通数据和历史交通数据的OD反推技术为基础,通过微观仿真的形式,结合分布式仿真技术和虚拟现实技术,离线或者在线地再现路网的真实交通情况,为管理者提供直观的决策依据。