PDM系统中产品配置管理的算法研究

通过对产品数据管理系统中配置管理问题进行深人地分析，建立起整数规划数学模型，在借鉴其它算法的基础上，提出了遗传算法解决方案，并对算法中的编码方案、适值函数、变异过程进行了详细描述，为配置管理功能的实现提供了新思路。     

AFDX虚拟链路路径实时寻优算法

航空电子全双工交换式以太网(AFDX)使用虚拟链路(VL)进行消息数据流通信,为提高AFDX的网络实时传输性能,以VL路径配置寻优为基础,提出了一种基于遗传算法的AFDX VL路径优化算法(POGA)。POGA以提高网络实时性为优化目标,并综合考虑网络负载均衡,以VL的路径信息作为染色体,通过遗传算子进行遗传寻优操作,选择促使AFDX网络实时性能最优的VL路径作为优化结果。利用仿真优化方法对POGA进行了实现,在典型AFDX网络1 000条VL的配置下,与负载均衡算法和最短路径算法进行了分析对比,结果显示分别有76.4%和77.4%的VL的传输实时性得到了增强,网络的实时传输性能分别提高了13.2%和12.9%。     

Consensus based on learning game theory with a UAV rendezvous application

Multi-agent cooperation problems are becoming more and more attractive in both civilian and military applications. In multi-agent cooperation problems, different network topologies will decide different manners of cooperation between agents. A centralized system will directly control the operation of each agent with information flow from a single centre, while in a distributed system, agents operate separately under certain communication protocols. In this paper, a systematic distributed optimization approach will be established based on a learning game algorithm.The convergence of the algorithm will be proven under the game theory framework. Two typical consensus problems will be analyzed with the proposed algorithm. The contributions of this work are threefold. First, the designed algorithm inherits the properties in learning game theory for problem simplification and proof of convergence. Second, the behaviour of learning endows the algorithm with robustness and autonomy. Third, with the proposed algorithm, the consensus problems will be analyzed from a novel perspective.     

高分辨率相机采用集成微反射镜器件校正像差

对已报道的各种集成微反射镜器件进行综述，对其特点和性能进行比较和评价；提出了采用ＭＥＭＳ工艺制造的微反射镜阵列器件作为能动器件，在星载空间高分辨率可见光相机中进行像差校正的想法，并给出对光学波前误差实时校正的具体方法。     

Observations of the ozone and nitrogen dioxide profiles in the TROICA-4 experiment

To investigate the vast area of Russia, a mobile scientific facility based in a railway carriage was developed. It is capable to perform continues measurements being coupled in a passenger train traveling along railroads. It was first equipped with a spectrometer for remote sensing of ozone and nitrogen dioxide in the atmosphere for the transcontinental observations into the chemistry of the atmosphere-4 expedition performed from February 18 to March 5, 1998. A twilight DOAS method, which was applied for retrieval of the nitrogen dioxide profiles basing on spectral measurements at the visible wavelengths (434–451 nm), is described in the paper. Main features of a new algorithm for retrieval of the ozone profile and total content using the differential structure of the UV spectrum (310–335 nm) are presented. The ozone and nitrogen dioxide contents are obtained and shortly validated against available alternative data.     

新的适于计算机辅助工程的算法集成模型

为解决计算机辅助工程中"以算法为核心"类软件系统在算法集成方面存在的重要问题,以火箭发动机设计这个较具代表性的特例为切入点,深入分析工程实践中算法的运用特点,并指出现有软件系统的不足.提出2种算法模式,基于这2种算法模式建立一种新的算法集成模型--轮循与层次化算法集成模型,其具有松耦合、层次化、灵活等特点,基于该模型可建立一个跨领域、通用、高效的算法集成软件环境.     

GA-PSO组合算法模型修正

文章在遗传算法（GA）和粒子群算法（PSO）的基础上,介绍了GA-PSO组合算法的流程和模态修正适应度函数的确定,并利用该算法对一个5层钢架结构模型进行修正,证实了该算法能有效修正模型。该算法能在前期利用GA算法进行高效全局搜索,后期利用PSO算法进行细致局部搜索,与单独使用PSO算法和GA算法相比,该组合算法修正效率和精度更高。     

USE OF GENETIC ALGORITHMS TO SEQUENCE THE MACHINING OPERATIONS OF PARTS

ＵＳＥＯＦＧＥＮＥＴＩＣＡＬＧＯＲＩＴＨＭＳＴＯＳＥＱＵＥＮＣＥＴＨＥＭＡＣＨＩＮＩＮＧＯＰＥＲＡＴＩＯＮＳＯＦＰＡＲＴＳＷＡＮＧＸｉｙａｎｇ（王细洋）（ＮａｎｃｈａｎｇＩｎｓｔｉｔｕｔｅｏｆＡｅｒｏｎａｕｔｉｃｓＴｅｃｈｎｏｌｏｇｙ,３３００３４,...     

一种求解背包问题的混合遗传算法

将启发式贪婪算法与简单遗传法相结合构成一种混合遗传算法,用该混合遗传算法求解大规模背包问题,含有５０个物品的背包问题的试算结果表明,用这种方法求解大规模背包问题,其解的质量和求解性能较简单遗传算法和贪婪算法都有很大的改善。     

受限控制直接分配新算法

对于三维目标的受限控制量分配问题,给出了直接控制分配方案的一种新的算法--相邻面搜索算法.直接控制分配方法的关键是找到期望目标向量与目标可达集合外表面的交点.该算法不需要确定目标可达集的所有表面,而是由目标可达集表面一个面出发,逐步确定相邻的面,直到找到与期望向量相交的面.算法放宽了原算法中控制效率矩阵任意三列线性无关的条件,并且能够在各种情况下得到最优分配结果.经验证,算法满足精确性与实时性要求.该算法的有效性在某多操纵面飞机的飞行控制系统仿真中得到了验证.