DVB-S2组帧研究实现及仿真

研究了DVB-S2组帧结构,提出了该结构的具体实现方案,建立了相关的系统仿真模型,并且在SPW(SignalProgressing Worksystem)仿真平台上对实现方案进行了仿真验证.     

MAFIA在行波管多级降压收集极模拟中的应用

评述了传统二维稳态轨迹程序模拟多级降压收集极计算方法,同时提出了使用MAFIA 大信号分析软件对多级降压收集极进行全三维动态PIC模拟的方法和收集极效率简化计算公式。初步模拟实例表明该方法与实验结果吻合较好,为收集极的精确模拟和优化设计提供了新的途径。同时也指出了该方法存在的不足。     

局部纠缠交换对量子随机网络鲁棒性的影响

利用纠缠渗流的方法,在量子随机网络中任意两个节点间建立远距离纠缠态,同时还进行了局部纠缠交换的操作。通过此操作改变了网络中局部节点间的连接情况,也使整个网络的拓扑结构发生变化。重点探讨了局部操作对量子随机网络鲁棒性的影响,这种影响通过纠缠渗流的阈值变化情况来体现。通过理论分析和数值模拟,发现有操作时度大的节点数目明显增多,遭受随机攻击后的阈值变化也较小。这说明进行局部纠缠交换操作能够大幅度提高量子网络受到攻击后的连接鲁棒性。     

High-speed low-power voltage-programmed driving scheme for AMOLED displays

A new voltage-programmed driving scheme named the mixed parallel addressing scheme is presented for AMOLED displays, in which one compensation interval can be divided into the first compensation frame and the consequent N-1 post-compensation frames without periods of initialization and threshold voltage detection. The proposed driving scheme has the advantages of both high speed and low driving power due to the mixture of the pipeline technology and the threshold voltage one-time detection technology. Corresponding to the proposed driving scheme, we also propose a new voltage-programmed compensation pixel circuit, which consists of five TFTs and two capacitors(5T2C). In-Zn-O thin-film transistors(IZO TFTs) are used to build the proposed 5T2C pixel circuit. It is shown that the non-uniformity of the proposed pixel circuit is considerably reduced compared with that of the conventional 2T1C pixel circuit. The number of frames(N) preserved in the proposed driving scheme are measured and can be up to 35 with the variation of the OLED current remaining in an acceptable range. Moreover, the proposed voltage-programmed driving scheme can be more valuable for an AMOLED display with high resolution, and may also be applied to other compensation pixel circuits.     

基于ST与量子理论模型的红外与可见光图像融合

针对传统的红外与可见光图像融合方法计算复杂度高、运行机制过于机械的问题,提出一种基于剪切波变换（ST）与量子理论（QT）模型的红外与可见光图像融合方法。该方法利用ST优越的图像信息捕捉性能对源图像进行多尺度多方向分解;其次,采用 QT理论针对低频子带图像和一系列高频子带图像进行融合;最后,采取ST反变换获得最终融合结果图像。     

机器人自动控制中的问题研究

机器人自动控制是机器人技术的关键与核心,是当前机器人领域研究的热门课题。针对开展相关研究的迫切需要,总结了机器人自动控制中存在的主要问题,并从单机器人简单动作控制到多机器人复杂动作协调控制,最后到机器人控制精度,进行了问题分析。重点从机器人路径规划,运动过程中的惯性矩控制,多机器人协调控制以及基于多传感器信息融合算法提升机器人控制精度这4个方面出发,对机器人自动控制中存在的主要问题展开论述,并提出了相应的解决方案。     

槽式DSG太阳能热发电集热管传热特性探讨

本文运用能量守恒的方法建立了集热管一维模型,分析了集热管在不同工况下的集热效率,同时建立二维模型给出了集热管出口温度和出口干度的计算方法,分析了24米长集热管在不同工况下的出口温度和干度,为今后建立槽式DSG太阳能热集热发电站提供参考意见。     

多智能体系统中的任务分配蚁群优化算法

Task allocation is a key issue of agent cooperation mechanism in Multi-Agent Systems. The important features of an agent system such as the latency of the network infrastructure, dynamic topology, and node heterogeneity impose new challenges on the task allocation in Multi-Agent environments. Based on the traditional parallel computing task allocation method and Ant Colony Opti-mization (ACO), a novel task allocation method named Collection Path Ant Colony Optimization (CPACO) is proposed to achieve global optimization and reduce processing time. The existing problems of ACO are ana-lyzed; CPACO overcomes such problems by modifying the heuristic function and the up-date strategy in the Ant-Cycle Model and es-tablishing a three- dimensional path phero-mone storage space. The experimental results show that CPACO consumed only 10.3% of the time taken by the Global Search Algorithm and exhibited better performance than the Forward Optimal Heuristic Algorithm.     

航空发动机用光纤叶片振动传感探头的研制

主要介绍了一种制作光纤叶片振动传感器探头的新工艺,该工艺选用特殊的大芯径精密陶瓷插芯,采用了一种创新性的光纤定位技术,利用该工艺制作的光纤叶片振动传感探头经试验验证完全满足航空发动机叶片振动参数的测量要求.     

基于物联网的蔬菜可追溯系统的设计与实现

为提高蔬菜追溯效率、降低蔬菜跟踪、监控成本,通过对蔬菜生产企业进行实际调研,对现有蔬菜生产、定位、跟踪、监控、销售等全过程进行了分析,给出了一种基于RFID和Internet技术的蔬菜可追溯系统的物联网设计方案.重点分析了该物联网中的RFID系统、中间件和手机或无线PDA等应用部件,最后分析了该网络在Internet基...