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.     

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.     

基于群体AHP的仿真可信度评估方法研究

群体层次分析法（Group AHP）是由多个具有相关领域不同知识和经验的专家参与的群决策方法,提出了基于该方法的系统仿真可信度评估方法。首先验证各专家给出的判断矩阵的一致性,并确定判断矩阵每行的可信度,再计算各判断矩阵的可信度,给出判断矩阵中各要素的相对权重,最后得到仿真可信度的定量指标。应用结果表明,该方法能更好地集中了各专家的智慧,克服人为主观判断、偏好给决策带来的影响,因而更符合客观规律,为仿真可信度的定量评估提供了有效的技术途径。

Abstract：

Group AHP （Group Analytic Hierarchy Process） is a method of Group Decision executed by many experts who have different knowledge and experience. The method of simulation credibility evaluation based on Group AHP was proposed. In this method,the consistency of every judgment matrix built by experts was verified firstly. And every row＇s credibility of judgment matrix was given. Then reliability of every judgment matrix was calculated and the weight was constructed. Finally,quantitative credibility of simulation system was calculated. Group AHP collects intelligences of experts and reduces subjective effects and biases. The application result shows that the method is reasonable and feasible.     

A parameter estimation based adaptive actuator failure compensation control scheme

An adaptive actuator failure compensation control scheme is developed using an indirect adaptive control method,by calculating the controller parameters from adaptive estimates of system parameters and actuator failure parameters.A key technical issue is how to deal with the actuator failure uncertainties such as failure pattern,time and values.A complete parametrization covering all possible failures is used to solve this issue for adaptive parameter estimation.A simultaneous mapping from the estimated system/failure parameters to the controller parameters is employed to make the control system capable of ensuring the desired system performance under failures,which is verified by simulation results.     

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.     

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.     

Control and Synchronization of a Novel Hyperchaotic System Containing One Quadratic Term

A novel hyperchaotic system derived from Liu system is proposed in this paper. Lyapunov exponent, phase portrait and Poincare mapping are given to verify that the system is hyperchaotic. A controller is designed to compel the hyperchaotic system to converge into the equilibrium. It is proved theoretically that this control law is feasible and valid by Lyapunov second method. Based on linear feedback synchronization control principle, synchronization control of the novel hyperchaotic system is realized. Numerical simulation shows that this synchronization method is simple and effective. As long as the proper linear feedback control vector is chosen, it is easy to achieve the rapid synchronization between the driving system and response system.     

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.     

虚拟战场环境中对抗仿真的可信度分析

针对目前虚拟战场环境中作战仿真系统的可信度问题进行了理论探讨。在介绍虚拟战场环境中对抗仿真系统的体系结构基础上,突出解决了如何保证作战仿真系统在开发过程中的质量管理以及如何对现有的作战仿真系统进行评估两个前沿问题。着重剖析了概念模型、总体设计、详细设计中所应该进行的校验和验证工作,最后给出了一般作战仿真系统可信度评估的体系结构。     

基于风险分析的仿真可信性控制

针对仿真可信性面临的问题,提出了基于风险分析的仿真可信性控制方法. 依据面临风险的不同,将仿真可信性控制的实现过程分为仿真结果可信性控制和仿真应用可信性控制两个部分,对其实现原理和关键技术进行了分析,提出了基于影响网的仿真风险分析方法,实现了仿真风险的定量计算,设计了基于敏感分析的风险消减方法,通过对关键失效的修改,实现了仿真可信性的控制和提高. 最后给出了一个例子证明所提方法的可行性和有效性.     

基于Agent的体系对抗仿真建模方法研究

面向信息化战争的武器装备体系对抗仿真，从复杂系统建模的角度对传统系统仿真建模方法提出了严峻挑战。因此，需要以CAS理论为依据，研究新的武器装备体系对抗仿真建模方法，以适应信息化战争模拟的需要。为此，我们在分析体系对抗仿真需求的基础上，从基于Agent的体系对抗仿真建模概念、仿真建模概念框架、仿真建模策略，基于Agent的体系整体“涌现”行为建模等问题入手，探讨了基于Agent的体系对抗仿真建模方法问题，并结合体系对抗仿真实验，研究了基于Agent的实体行为建模、实体交互建模和实体模型结构，提出了基于Agent的体系整体“涌现”行为建模思想和建模规范。     

鱼雷自寻仿真可信性的时－频分析研究

仿真系统应尽量真实地反映实际系统的特性,仿真结果是否可信,是评价仿真性能不可缺少的环节。受水下复杂环境的影响,鱼雷自导的目标特性和海洋混响具有非平衡性。本文采用基于时－频分析的二维互相关方法,评估鱼雷自导仿真结果的可信性。并用仿真数据和实测数据对这种方法进行验证。实验结果表明,该方法在评价鱼雷自导目标特性,海洋混响仿真结果的可信性方面,是一种非常有效的方法。     

云仿真系统可信度评估问题探讨

云仿真平台支持"云仿真"模式,能够自动查找仿真资源、动态构建云仿真系统.由于云仿真平台具有按需构建仿真服务、多粒度资源共享等特点,云仿真系统的可信度评估工作在仿真资源的可信度、仿真子系统的可信度、仿真运行环境的可靠性等方面面临新的问题.从云仿真系统全生命周期角度,建立了云仿真系统的可信度评估过程模型和云仿真系统可信度评...     

复杂仿真系统重用模型可信度评估方法

在资源高度共享的今天,模型重用可增强仿真应用的灵活性和可扩展性,是复杂仿真系统构建的必然选择。然而,评估多模型组合仿真下的可信性是模型能否实现有效重用的基本问题。针对面向实物和面向数值解算两个不同应用环境的仿真模型重用,提出基于偏差传播的仿真重用模型可信度评估方法,详细介绍了各自建模方式及评估方法。以无人机复杂仿真系统为例,通过与经典可信度评估方法对比,说明了该方法可降低在重用模型可信度方面的评估难度,验证了方法的可行性。     

战争系统体系能力需求的建模与仿真

战争是一个典型的复杂系统，战争系统的需求论证必须适应信息化战争条件下体系对抗和整体性的特征，需要用新的理论和方法来指导。论文重点从战争系统体系需求的描述框架，基于效果的体系能力规划，探索性仿真实验，以及综合实验评估分析等不同侧面对战争系统体系能力需求论证进行探讨。     

基于改进模糊综合评判的仿真可信度评估方法

针对基于传统模糊综合评判的仿真可信度评估过程中专家根据个人偏好或期望确定权重、模糊合成运算选择不合理等引起的评估结果不准确等问题,提出了一种基于改进模糊综合评判的仿真可信度评估方法。针对树型评估指标体系,利用模糊综合评判矩阵,基于最小隶属度加权平均偏差确定评估指标体系中各层指标的权重;在模糊合成运算环节,利用隶属度加权平均偏差,获取综合评价向量,进而得到仿真可信度评估结果;应用于某半实物仿真系统可信度评估中,计算结果验证了该方法的合理性和可行性。     

层次分析法在水下航行器系统仿真可信性评估中的应用研究

系统仿真可信度评估需要从多个层次、多个角度进行,然而我们不仅关注评估过程中的各种结论,更希望了解系统仿真可信度的综合指标。本文首次将层次分析法(AHP)引入水下航行器系统仿真可信性综合评估中,通过确定系统仿真可信性评估指标体系中各因素的权重,对VV&A过程中的各种定性和定量的可信度评估因素加以综合,应用表明,所得到的系统仿真可信度综合指标具有一定的合理性和可信性。     

复杂动态环境下的企业能力系统研究：一个基于主体的仿真分析框架

将复杂适应系统理论引入企业能力的研究领域,通过对企业能力与企业能力系统概念的界定,提出当前复杂动态环境下的企业能力系统在本质上属于复杂适应系统,并对其复杂适应性特征进行了分析。在此基础上,遵循＂环境—规则—主体＂（ERA）的体系架构,给出企业能力系统分析的基本框架,为构建企业能力系统基于主体的仿真模型提供理论上的依据。文末,结合JES仿真平台对该分析框架的应用研究作了简要探讨,为借助于计算机工具对复杂动态环境下的企业能力进行仿真分析和研究提供了一种新的思路和方法。