小型侵爆战斗部毁伤多层靶板威力分析与仿真

通过分析弹靶结构,优选可靠的分析方法,对小型半穿甲侵爆战斗部毁伤多层靶板目标的威力进行了理论计算,并利用AUTODYN-2D计算软件,建立了最优化数学模型,对侵彻与爆炸成坑过程进行了分段数值仿真,并与相关实弹数据进行比较,各组数据均显示该种结构的侵爆战斗部在特定弹目交汇条件下,弹体强度满足要求不会产生明显变形,峰值过载不超过装药应力安全限,而且爆破中心位置理想,毁伤效果满足战术指标要求,仿真结果具有较高的可信度,可为同类战斗部的方案设计提供参考。     

一种新型UUV半实物仿真系统设计与实现

针对UUV导航与控制系统高精度仿真的需要,设计了一种支持捷联惯导、多普勒测速仪、深度传感器和GPS接收机接入的半实物仿真系统,解决了GPS卫星导航信号仿真、多普勒测速仪水声回波模拟和UUV深浅水航行深度模拟问题,进行了导航与控制系统的半实物仿真试验,分别测试了GPS导航仿真子系统、多普勒测速仿真子系统和深度模拟子系统。试验结果表明,该仿真系统满足了仿真实时性和计算精度的要求,对于UUV研制具有重要的应用价值。

Abstract：

To satisfy the requirement of high accuracy simulation of complicated navigation and control system of unmanned underwater vehicle, a new plan of simulation system was proposed, which afforded the interface environment for SINS, Doppler velocity instrument, depth sensor and GPS receiver. The GPS satellite navigation signal simulation, the acoustic echo of Doppler velocity instrument and the sailing depth simulation were solved. The simulation experimentation combining hardware was processed, and the GPS simulation subsystem, the Doppler velocity simulation subsystem and the sailing depth simulation subsystem were all tested. The results show that the simulation system meets the real-time and accuracy requirements, and the system has important application value for UUV development.     

某舰炮非线性动力学分析

基于非线性动力学理论,研究了某舰炮发射过程中的动力学响应问题。建立了某舰炮含身管和摇架导轨之间大位移滑动接触的有限元模型,运用隐式时间积分方法模拟该炮发射的后坐复进过程,获得了炮口的后坐复进位移和速度响应以及关键部位的动态应力。计算结果可为舰炮的设计和优化提供一定的理论依据。

Abstract：

Based on nonlinear dynamics,muzzle＇s responses during the whole firing course of a naval gun were investigated. The finite element model of the naval gun was established,including large sliding contact between barrel and cradle guide of the gun. The recoil and recuperation process of the gun was simulated by implicit time integration dynamics method,and the responses of displacement and velocity on muzzle and key part dynamic stress were obtained. The calculation results provide the academic basis for the design and optimization of naval gun.     

卫星二次分离方案仿真研究

首先借助Adams软件对多星二次分离方案建立简化的分离系统模型,研究卫星质量,子星分布特性,分离参数等因素对小卫星二次分离的影响,并选择合理参数值对多星二次分离过程仿真。然后,为验证模型,对二次分离进行了动力学计算,得到子星分离速度和角速度值。对比两者结果一致,验证了ADAMS模型计算的正确性。仿真研究对小卫星设计具有重要实际意义,为我国新一代小卫星的多级分离技术的研究提供依据和参考。

Abstract：

Firstly,the simplified model of satellite separation system was built for secondary separation schemes,and the elements of affecting micro-satellite secondary separation were analyzed,such as micro-satellite mass,distributing character and separation parameters,and then ADAMS simulation was applied to the multi-satellites secondary separation based on the optimized parameters. After that,in order to verify model,the dynamic calculating was carried out and velocity and angle velocity of secondary separation were obtained. Finally,it could be concluded that the Adams model was correct comparing dynamics results. The results are a good reference to satellite design and step separate technology of new generation satellite.     

Family genetic algorithms based on gene exchange and its application

1. INTRODUCTION Genetic algorithms (GA) are a search techniques bas-ed on mechanics of nature selection and were initiallyproposed by Holland[1]. GA have already beensuccessfully applied in many diverse areas, such asfunction optimization, the traveling salesman proble-ms, multiobje-ctive optimization problems, schedulingneural network design, system identification, visioncontrol and machine learning. A detailed review ofthese applications is provided in Refs. [2] and [3]. The strength …     

遥感数据处理的网格系统仿真实现及应用研究

研究为满足海量遥感数据实时、快速处理的要求,利用网格技术开展遥感数据处理网格系统仿真的相关理论与实践的研究。首先,在详细分析遥感数据处理网格概念和特点的基础上,提出遥感数据处理仿真网格体系结构的设计思路与构建方法;其次,利用Condor-G的网格中间件技术,完成了多机、多系统、多用户计算机节点构成的＂遥感数据处理网格仿真实验系统＂;最后,应用该网格仿真系统,部署并验证了专题遥感处理的网格应用,获取并分析了处理性能参数,实验结果表明：遥感数据处理的网格仿真应用提高了处理的速度和效率。

Abstract：

This research was satisfied with the needs of the remote sensing massive data real time and fast transmission and processing,and developed the grid simulated theory and methods research of remote sensing processing. First,based on the generalized analysis to the concept and characters of RS grid,the RS data grid simulated processing architecture design mentality and the construction method were proposed. Second,＂The RS data processing test simulation grid＂ was established by using condor-g in the multi-machine,multi-system,multi-user environment. Finally,the RS grid applications were completely deployed in the experimental grid environment and applied of which combined with experimental data. And its operating results prove that RS grid simulated applications have achieved better efficiency and velocity.     

基于智能粒子群优化算法的人员疏散问题研究

针对建筑物内发生火灾时人员疏散的逃逸行为进行了研究,将智能粒子群优化算法应用在人员逃逸的过程中,提出了一种智能粒子群逃逸模型。将行人群比拟为粒子群,并将粒子赋予一定的维能力,此时的智能粒子将会具有类似行人的一些特征如行为特征和心理特征。智能粒子在受灾害模型与自身思维特征模型的影响下,确定其逃逸的速度包括速度的大小和方向,然后改变自己目前的位置。在建模的过程中,还考虑了智能粒子间的碰撞及建筑物内诱导信息的作用。最后通过应用智能粒子群优化算法对某一建筑物内发生火灾时人员逃逸行为的二维仿真实验来验证模型的有效性及算法的可行性。

Abstract：

The escape behavior of people’s evacuating in the fire disaster was researched.The Intelligent Particle Swarm Optimization （IPSO） was applied in the processing of escaping.A novel IPSO escape model was proposed.The pedestrians were assimilated as the particles.All particles were endowed with thoughts like human being.These intelligent particles will have some characteristic such as behavior and psychology characteristic at present.Their velocity included the direction and the magnitude under the influence of the disaster model and thinking characteristic model was determined.Then the particles positions were changed.The collision of particles and the effect of elicitation information in building were also considered.Most importantly,the simulated results demonstrate that method is feasible and efficient to simulate the escape behavior in fire disaster,especially to drilling.     

Variable structure guidance law for attacking surface maneuver targets

The characteristics of surface maneuver targets are analyzed and a 3-D relative motion model for missiles and targets is established. A variable structure guidance law is designed considering the characteristics of targets. In the guidance law, the distance between missiles and targets as well as the missile-target relative velocity are all substituted by estimation values. The estimation errors, the target＇s velocity, and the maneuver acceleration are all treated as bounded disturbance. The guidance law proposed can be implemented conveniently in engineering with little target information. The performance of the guidance system is analyzed theoretically and the numerical simulation result shows the effectiveness of the guidance law.     

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.     

液压剪叉式升降台的动力学仿真

为了减小剪叉式升降台运动过程中的加速度和节点力,以内装式液压单片剪叉式升降台为研究对象,推导了液压缸驱动速度与机构运动速度的关系,利用ADAMS软件进行了机-液联合动力学仿真,分析了液压系统中方向控制阀的控制函数对机构运动学特性的影响,得到了控制函数的优选方案。其分析方法与结论对剪叉式升降台及其液压系统设计具有指导作用。

Abstract：

In order to reduce the acceleration and force of scissors elevating platform in the process of motion, the relationship between the velocity of hydraulic cylinder and scissor mechanism was derived for the single scissors mechanism. The dynamic property of scissors elevating platform was analyzed using by ADAMS software. The influence of the control function for the dynamic property was studied, and the optimum project of control function was acquired. The methods and conclusions are available for designers of scissors elevating platform and hydraulic circuit.     

子母战斗部系统仿真平台设计与实现

采用模块化软件设计思想,利用Visual C++基于windows系统开发了子母战斗部多种模型算法模块、数据库模块、可视化界面模块,建立了一种具有通用性和易扩展性的子母战斗部系统仿真平台。在该平台上对某子母战斗部系统进行了仿真研究,仿真结果表明该仿真平台性能可靠、结果可信度较高。子母战斗部系统仿真平台的建立,为子母战斗部系统的研制、开发提供了数字化平台,具有广泛的应用前景。     

基于点火增长模型炸药混凝土内爆炸特性研究

钻地武器研制以及国防工程建设的需要大大推动了内爆条件下混凝土损伤力学特性的研究。基于炸药冲击起爆的点火增长模型和混凝土动力学损伤模型,采取无网格方法研究高聚物粘结炸药在混凝土介质中的破坏损伤效应,定量地确定混凝土损伤区域尺寸与炸药量、炸药初始埋深的多项式关系,得出:掩埋条件下,与其它损伤参数相比,炸药药量对混凝土损伤区域体积影响最显著。且同一药量下,炸药的埋深在3/8H至1/2H范围,内爆炸对混凝土介质的破坏效应较大。同时,还定量地给出混凝土自由面介质的最大运动速度与炸药埋深的指数衰减关系式,为进一步提高高聚物粘结炸药在混凝土内爆炸的做功能力和威力提供理论依据。     

战斗部与HTK允许脱靶量的仿真分析

通过建立战斗部和直接碰撞杀伤方式命中目标的允许脱靶量模型,针对空中目标尺寸、速度、机动等特性的变化进行了仿真计算和比较分析。结果表明在不同具体情况下,战斗部和HTK拦截各有优劣;但从普遍意义上看,HTK方式对特性变化目标和不同类型目标具有更好的通用性,对高性能目标也具有更好的适用性。     

基于离差最大化的导弹中段目标威胁度评估

释放诱饵是典型弹道导弹中段突防措施之一,对诱饵与真弹头的威胁度进行评估也因此成为导弹防御系统实施拦截的首要前提.考虑弹头与诱饵的位置、速度、RCS及红外辐射强度等目标特性不同,采用模糊隶属函数和G.A.Miller 9级量化理论对弹头与诱饵的威胁属性进行量化,建立了基于离差最大化的导弹中段目标威胁度多属性评估模型,给出了计算实例.计算结果表明,采用此方法能够有效确认威胁度最大的目标,满足弹道中段目标的威胁度评估需要.     

一种新型高超音速导弹的控制模式研究

高超音速导弹的质量矩控制是通过移动导弹内部滑动质量块的位置,使整个导弹的质量中心产生偏移,并利用气动力相对于质心的力矩改变导弹的飞行姿态和攻角,最终实现导弹机动控制的一种控制方式。以弹头为例,在推导出质量矩弹头的动力学方程基础上,通过分析其方程组的特点并结合弹头再入过程中的气动、速度等参数变化规律,给出了质量矩弹头再入过程中宜采用的控制模式,为其控制律的设计提供了必要的理论参考。     

末敏弹图像序列中跑道线目标的跟踪方法研究

提出了一种在末敏弹稳态下落过程中利用Hough变换将机场跑道线目标转化为对点目标的跟踪方法。考虑在各个参数解耦的情况下,对Hough平面内的直线参数利用卡尔曼滤波方法进行了状态估计与预测。在确定子弹与跑道目标的相对位置关系时,考虑到弹上探测器旋转运动的影响,结合当前帧图像的数据信息对预测方程进行修正处理,并给出了跟踪方法的详细步骤。跟踪数据分析表明,此方法实时性强,降低了参与运算的数据量,试验结果误差较小,满足目标总体设计要求。     

三种典型聚能射流侵彻靶板数值模拟

聚能射流根据其装药结构及药型罩参数不同可以分为锥形罩装药、亚半球罩装药以及K型装药。利用有限元软件LS-DYNA对三种典型聚能射流的成型及侵彻过程进行了数值模拟。分别计算了三种不同类型的聚能装药射流的成型及对均质装甲钢的侵彻过程及结果参数,并对计算结果进行了简要地分析。结果表明K装药射流对靶板侵彻深度及孔径较为合理,是一种性能优异的破爆型串联战斗部聚能装药结构。     

利用导引头信息测量脱靶量的方法

为了满足瞄准式战斗部定位攻击的需要,根据防空导弹逆轨拦截遭遇段只要存在脱靶量就存在视线角速度的特点,分析了导引头视线角、视线角速度、弹目相对速度、径向速度之间的几何关系,提出了采用导引头产生的视线角、视线角速度及多普勒频率来测量脱靶量的方法,解决了利用导引头距离信息测量脱靶量时误差较大的问题。对算法中需要的参数可测性进行了分析,通过导引头能否提供视线角速度信息两种情况下的仿真,验证了所提算法的正确性及实用性。     

空空导弹引战配合特性的数学仿真

在建立空空导弹引战配合数学模型的基础上，应用Matlab语言对某型空空导弹引战配合的有效起爆区，实际起爆区及其重合区进行数学仿真，给出了仿真结果并对仿真的结果进行分析，进而提出影响引战配合特性的基本因素，以及提高引战配合特性的有效技术途径。