包装企业创新之路——包装科技成果评估与应用

全国各级高新技术开发区1994年新建流水生产线约10000条,而年平均利用率只有52%,全国电     

基于虚拟仪器技术的多线程数据采集系统

本文论述了如何利用虚拟仪器技术以及多线程技术来进行数据采集，并介绍了在工业中的实际应用。     

New Algorithm for Binary Connected-Component Labeling Based on Run-Length Encoding and Union-Find Sets

Based on detailed analysis of advantages and disadvantages of the existing connected-component labeling (CCL) algorithm, a new algorithm for binary connected components labeling based on run-length encoding (RLE) and union-find sets has been put forward. The new algorithm uses RLE as the basic processing unit, converts the label merging of connected RLE into sets grouping in accordance with equivalence relation, and uses the union-find sets which is the realization method of sets grouping to solve the label merging of connected RLE. And the label merging procedure has been optimized: the union operation has been modified by adding the "weighted rule" to avoid getting a degenerated-tree, and the "path compression" has been adopted when implementing the find operation, then the time complexity of label merging is O(nα(n)). The experiments show that the new algorithm can label the connected components of any shapes very quickly and exactly, save more memory, and facilitate the subsequent image analysis.     

高精度电液系统的模糊滑模控制仿真研究

结合模糊逻辑和滑模理论,对带有大转动惯量负载的电液系统实现了高精度的控制。该控制器在系统状态到达 滑模面时由模糊逻辑求出等效控制量,有效地削弱了抖振、抑制了外部干扰。为了在没有专家经验时,设计出性能良好的模 糊控制器,采用遗传算法优化隶属函数和控制规则。在MATLAB中的仿真结果表明,所设计的控制器表现出良好的性能,满 足了系统控制指标的要求     

基于局域预测的动载天线伺服控制策略研究

针对中小涌浪的扰动,研究了一种基于少量数据的局域预测方法,应用于海面小型漂浮式动载天线跟踪卫星的方位和俯仰伺服控制中.以天线系统的少量位置数据为基础,采用局域预测算法预测天线的位置,计算天线指向将偏离卫星的偏差值,进行天线指向偏离卫星的补偿控制;基于天线位置间相关性,研究了局域预测算法并进行仿真验证;根据天线系统的组成设计了天线方位伺服控制器,并通过matlab仿真和半实物仿真验证了局域预测伺服控制策略的可行性、可靠性和鲁棒性.     

中原油田封堵大孔道技术研究

针对中原油田注水开发的不断深入,大孔道普遍存在,递减逐年加大,开发效果变差。通过分析中原油田地质特点,开展封堵大孔道技术研究,形成了配套的ＰＩ决策技术、示踪剂油藏监测技术、多段塞封堵技术、分层封堵及施工工艺技术,并对各种技术进行了详细的阐述。同时开展了系列封堵大孔道堵剂研究,开发了石灰泥堵剂、水泥复合堵剂、粉煤灰堵剂、纸浆废液堵剂、Ｆ９１７ 树脂堵剂、ＷＴ－ＩＩ封堵剂、盐酸—硅酸钠等调剖剂的研究。试验证明,系列堵剂对封堵大孔道具有明显的作用。现场应用取得了较好的结果,为高含水期油田稳产探索了一条新路,提高了油田最终采收率。     

基于物联网和GPRS的公寓安全智能管理系统设计

目前用于公寓安全管理的产品功能比较单一,不能对学生公寓进行全方位的安全防护.本文基于物联网和GPRS技术构建公寓安全监测、控制与管理系统,公寓房间内安装电流检测、温度检测、烟雾检测、红外防盗检测等多种传感器,对房间的安全信息进行感知与实时监测,实现未授权的门窗入口报警、红外防盗报警、大功率电器使用报警以及火灾报警等功能.所有报警信息通过无线传感网络和GPRS实时传送到数据中心,进行存储与显示.实验证明该系统可以实现对多路传感信息的准确识别和报警信息的无线传输.     

Optimization of satellite searching strategy of the non-stationary antenna

The tiny searching step length and the satellite distribution density are the major factors to influence the efficiency of the satellite finder, so a scientific and reasonable method to calculate the tiny searching step length is proposed to optimize the satellite searching strategy. The pattern clustering and BP neural network are applied to optimize the tiny searching step length. The calculated tiny searching step length is approximately equal to the theoretic value for each satellite. In application, the satellite searching results will be dynamically added to the training samples to re-train the network to improve the generalizability and the precision. Experiments validate that the optimization of the tiny searching step length can avoid the error of locating target satellite and improve the searching efficiency.     

LMI Approach to Robust H∞/H2 Controller Design with Regional Poles Constraint of a Pump-Motor System

Whenfacing withthe practical servosystemcon-trol problem,the control systemis often required tomeet many performance indexes which include ti medomain,frequency domainand H∞/H2.Theseindex-es have explicit purpose and appliedsituation.For ex-ample,the H∞normbetween disturbance and outputrepresents the capability of noise-i mmune,the smallerthe H∞normis,the more excellent stiffness the sys-temhas.And the square of H2norm between inputand output is equal to the energy of the systempulserespo…     

构筑信息系统灾备防线

灾难恢复是整个信息安全应急工作的一个重要环节．是信息安全综合保障的最后一道防线。