基于UML的通用3D飞行仿真平台的设计与实现

一个能对不同飞行器进行仿真的综合性平台对飞行器建模和飞行控制算法设计等理论研究工作具有重要意义。采用基于UML的面向对象的程序设计方法,综合利用网络通信与3D视景仿真,数据库,模型库等技术,构建了基于局域网的分布式通用3D飞行仿真平台。通过为飞行器模型设计合适的接口,该平台可以适用于多种飞行器的仿真,大大减少了数据和代码的冗余,具有良好的飞行器通用性和功能扩展性。

Abstract：

Theoretical research on modeling and control of aircraft needs a platform to simulate and verify the correctness and accuracy.A distributed universal 3D flight simulation platform was designed based on UML Object Oriented modeling method,network communications,3D visual simulation,database and model base.This platform could be used for simulating various aircraft by well designed interface of aircraft models.The code and data redundancies are greatly reduced.The platform has a good aircraft universal availability and function augment ability.     

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.     

基于SPW的多元域LDPC码建模与仿真

SPW是进行通信系统建模与仿真的开发平台,具有非常强大的用户接口功能。多元域LDPC码是通信界研究的热点课题,较二进制LDPC码有更优的纠错性能。在研究多元域LDPC码编译码理论的基础上,介绍了SPW封装模块的步骤,开发了多元域LDPC码编译码模块,并将其嵌入SPW通信库。搭建了基于SPW的性能测试平台,在此基础上进行了计算机仿真。

Abstract：

SPW is a platform for modelling and simulation communication systems, and it has very strong function for user interface. Q-LDPC code is a hot point of channel coding technology which error-correcting performance exceeds B-LDPC code. Based on research of Q-LDPC code theory, the processes of model exploration based on SPW were introduced. Here the models of Q-LDPC encoding and decoding were designed, which was added to the communication library of SPW. A performance simulating platform of SPW was established. A simulation based on this model was proposed.     

列控仿真系统中应答器的定位查找算法研究

在CTCS-3级列控系统的仿真平台中,应答器作为关键的地面设备,需要给车载等地面设备提供定位信息和线路信息等,以保证列车的正常安全行驶,所以在正确的位置给车载设备发送应答器报文信息是很重要的。提出了一种仿真平台中减小应答器定位查找误差的算法,阐述了该算法的实现过程。仿真结果表明该算法减小了应答器定位查找的误差,是仿真中保证列车正常安全行驶的一种重要算法。

Abstract：

In the simulation platform of CTCS-3 system,the balise is the indispensable above-ground equipment which sends the localization information and the line information to the on-board equipment to guarantee traffic safety.It is very important to send the balise text in the correct position and opportunity.An algorithm was developed to reduce the localization search error when a balise was found in the simulation platform and this algorithm’s realizing process in the simulation platform was elaborated on.The result of the simulation indicates this algorithm can reduce the localization search error for balises,which is important in guaranteeing the normal and safe operation for trains.     

智能无人潜水器半实物仿真平台设计

为了验证无人潜水器系统的软件逻辑及智能控制系统的硬件体系、数据接口和可靠性,通过对其体系结构中的决策层进行实物仿真,对感知层和行为层进行功能性虚拟仿真来构建半实物仿真平台。详细阐述了该平台的硬件和软件体系结构,对虚拟仿真中的运动仿真、传感器仿真以及实物仿真中智能控制系统的设计做出了说明,进行了自主避障仿真试验和远距离航行仿真试验,该半实物仿真平台对实际海试具有重要的参考价值。

Abstract：

To verify the system software logic of a newly designed autonomous underwater vehicle and the hardware architecture,data interface and reliability of the intelligent control system,the semi physical simulation platform was established by combining physical simulation of decision layer with virtual simulation of perception and behavior layer.The hardware and software architecture of the simulation platform were explained in detail.The virtual simulations of motion,sensors and physical simulation of intelligent control system were described.Finally,the obstacle avoidance simulation and long voyage simulation tests were conducted,and the platform is important for the success of sea experiments.     

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.     

一种线结构光视觉传感器手眼标定方法及仿真

研究线结构光视觉传感器安装于多关节测量臂平台上形成复合式测量系统的手眼精确标定,提出了将传感器测量坐标建于激光测量面,通过变姿态测量固定标定点的手眼标定方法。利用机器人运动构型与标定点在传感器的坐标,推导了手眼标定模型。设计标准球为标定靶标,提起球心为标定点。建立了标定仿真模型,基于机构仿真分析平台-InteMech设计了一套仿真试验,试验验证了方法的可行性与有效性。

Abstract：

Hand-eye calibration of the compound measuring system that line structure light visual sensor was mounted on multi-joints measuring arm was researched. A calibration method was proposed,which the measuring coordinate system set on laser plane,a fixed point was measured with sensor from different poses. The hand-eye calibration equation was deduced using robot kinematical parameters and the coordinates of the calibration point in measuring coordinate system. A standard ball was designed as calibration object. And the centre of the ball was the fixed calibration point. Computer simulation modal was discussed. Simulation example was designed in the simulation platform of mechanism analysis-InteMech. The experiments show the calibration method is effective and feasible.     

Method of Chaotic Prediction Based on Wavelet BP Network and Its Application

The advantage of artificial neural network and wavelet analysis are integrated through replacing the traditional S-shaped activation function with the wavelet function. One method of chaotic prediction based on wavelet BP network was put forward based on the reconstruction of state space. Training data construction and networks structure are determined by chaotic phase space, and nonlinear relationship of phase points was established by BP neural networks. As an example, the new method was applied on short term forecasting of monthly precipitation time series of Sanjiang Plain with chaotic characteristics. The results showed so higher precision of the method had that the theoretical evidence would be provided for applying the chaos theory to study the variable law of monthly precipitation.     

基于STAGE的反舰导弹装备应用仿真研究

反舰导弹装备应用研究是水面舰艇装备形成战斗力的关键环节。本文给出了一种基于STAGE的反舰导弹装备应用研究仿真平台,介绍了其模型框架、仿真实现和仿真流程,并对某型反舰导弹进行了建模和装备应用仿真研究。结果发现该型导弹搜捕方案存在技术问题,在对导弹的优化方案和改进方案进行统计分析之后,指出该仿真平台具有较好的实用价值。     

空间任务论证平台仿真要素研究

仿真是空间任务设计、论证的重要分析手段之一。由于空间任务类型多样,而仿真系统的构建与空间任务密切相关,为了提高系统的重用性、开放性和扩展性,需要对空间任务仿真系统的体系架构和仿真要素进行深入探究。首先分析仿真系统的体系架构,设计了基于分布式的空间任务仿真平台系统结构;然后针对空间任务的特点,将仿真系统组成要素划分为基础仿真实体和扩展仿真实体,并对每个实体的仿真模型进行深入分析;最后通过"磁层-电离层-热层耦合卫星探测计划"的应用,证明仿真平台的合理性和能力。     

YFK-1仿真试验控制台的研究与开发

仿真试验控制装置是水下航行器控制系统半实物仿真中不可缺少的设备。论文以水下航行器半实物仿真系统为应用对象，以工业控制计算机和数据采集卡为硬件平台，采用LabVIEW开发工具，开发完成了YFK．1仿真试验控制台。该控制台接收来自ADI仿真计算机的仿真信号及外部设备驱动信号，采用A／D、D／A、TTL、光隔离、VMIC反射内存实时网络等接口，实现了多路模拟量、数字量的检测和显示。开发的系统具有控制、检测、监测和报警功能，且具有和高级语言C＋＋的接口，可以调用C＋＋的源程序，大大加强了仪器的灵活性。     

基于OPNET的拒绝服务攻击建模与仿真

分析讨论了网络仿真技术在仿真网络攻击方面存在的不足,给出了OPNET平台下可以实现仿真的网络攻击类型。针对所要建立的网络攻击模型对OPNET中所涉及到的关键进程模块进行了深入分析,在此基础上设计并实现了SYNflood网络攻击模型,最后在特定的仿真网络环境中运行了攻击模型,并通过对仿真结果进行分析得到了SYNflood攻击效果与TCP关键参数之间的定量关系,达到了预期的仿真目标。     

基于OPNET的移动IP建模与仿真

概要介绍了移动IP的协议机制和网络仿真工具OPNET。详细讨论了如何利用OPNET工具建立移动IP仿真模型的过程，并构建了一个移动IP仿真平台。在此基础上，对移动IP的功能和性能进行了验证。     

复杂网络拓扑结构对系统抗毁性影响研究

通讯网络的抗毁性、生物系统的健壮性、物理系统的稳定性都与各自系统内部网络的抗毁性息息相关。为研究复杂网络拓扑结构对复杂网络抗毁性的影响,建立了复杂系统的复杂网络抗毁性模型,以解析推导与计算机仿真相结合的方式研究了两种不同的复杂网络拓扑结构(随机网络和无标度网络)对复杂网络抗毁性的影响。并把仿真结果与解析分析的结果进行了对比分析,结果表明基于多Agent的建模仿真方法是一种研究复杂网络抗毁性的合适方法。     

分布式潜艇作战系统仿真设计环境研究

分布式潜艇作战系统仿真设计环境是目前国内功能较全、规模较大、技术较新的潜艇作战系统仿真平台,是数学仿真环境和半实物仿真环境的综合集成。该仿真设计环境可在较真实的水下战场环境中,利用异地分布的设备和仿真模拟器进行互操作,完成潜艇作战系统及分系统的仿真、验证和培训等应用,通过Stage软件的集成实现对整个仿真过程中战场态势的实时显示,并能对仿真结果进行评估。     

视觉伺服空间机器人运动硬件仿真研究

对空间机器人操作臂与安装平台之间耦合关系进行了分析,建立了空间机器人各关键部件的模拟器,并组建起硬件仿真试验平台.基于该平台对空间机器人运动控制特性进行了研究,建立了基于视觉反馈的运动规划算法和关节电机闭环控制模型.对仿真过程中的延时环节进行了分析,并采用Smith预估的方法对系统延时进行了补偿.系统自主捕获仿真试验试结果表明,所采用运动控制算法能够稳定收敛于目标,仿真平台能够较好的完成对机器人控制和通讯能力的模拟测试及系统控制算法的验证.     

基于通信的列车控制系统的有色Petri网模型的研究

基于通信的列车控制系统是我国铁路信号技术发展的一个重要方向，在分析了基于通信的列车控制系统结构的基础上，采用有色Petri网方法对该系统进行建模仿真研究。有色Petri网是一种以图形形式描述系统结构、功能的建模分析方法，特别适合大型异步并发系统的建模与仿真。为了使模型简洁清楚，提出了分整体层、处理层和功能层三部分建立相应的系统有色Petri网图的分析方法，并用CPN／Tools工具软件进行实现。通过建立一个基于通信的列车控制系统的有色Petri网模型，为最终开发出该系统的软件仿真平台奠定了良好的基础。     

基于HLA的深空探测系统仿真平台

为了仿真验证深空探测中的自主技术,采用基于HLA(High Level Architecture)的分布式仿真技术以及三维视景仿真技术,设计了分布式可视化深空探测系统仿真平台;实现了通用的联邦成员主体软件框架,该软件框架可嵌入不同的仿真实体模块,提高了项目开发的效率。以月球探测器软着陆仿真为例,验证了此仿真平台的可行性。该仿真平台也为进一步验证深空探测的自主技术奠定了基础。