基于机器视觉的多孔材料缺陷检测

针对多孔材料在生产工艺中易出现阻塞和缺角等缺陷,本文设计了一种基于机器视觉的多孔材料表面缺陷检测方法,通过对目标区域的有效分割、模糊度检测、形态学处理和分析等技术手段,实现了该类材料的表面缺陷的快速定位和特征分析.经实验检测,本文算法的准确性和检测效率可以满足工业生产实时检测需求.     

一种逆变电源并联均流控制策略

采用传统下垂控制策略的逆变器并联系统中,系统稳态时均流效果较差且并联系统暂态过程较长,影响了系统的可靠性和稳定性。文章在分析传统下垂控制的基础上,引入虚拟复阻抗将单台逆变器的输出阻抗变为纯阻性,然后改进传统下垂算法,提出一种阻性条件下PID结合PI功率下垂控制算法。并在MATLAB中做了仿真验证,仿真结果验证了方案的可行性和有效性。     

Multiple Kernel Based Remote Sensing Vegetation Classifier with Levy Optimized Subspace

Wireless Personal Communications - Vegetation classification in remote sensing (RS) applications details a rich source of information on land use/land cover decision making. To classify the mixed...     

一种面向高校实验室的远程电能监控与管理方案

为实现高校实验室的远程实时监测与智能管理,提出了一种实验室电能实时监测与综合管理方案.方案由基于STM32微控制器的实验室电能实时监测与控制终端,以及基于Spring+Spring MVC+My Batis(SSM)框架的人性化Web客户端和管理端构成,解决了实验室用电设备的远程实时监测与智能管理问题.经软硬件联合测试,验证了系统的有效性、实时性、鲁棒性与准确性.     

A hybrid economic indices based short-term load forecasting system

The bankruptcy event of Lehman Brothers and the corresponding global economic recession in 2008 and 2009, influenced the electricity load demand patterns for which traditional load forecasting approaches were not able to effectively predict. To overcome this problem, this paper proposes a new hybrid economic indices based short-term load forecasting (HEI-STLF) system. In which business indicators, such as the leading index or the coincide index, each combined with stock index as hybrid economic indices influencing factors for the support vector regression (SVR) model, to respond to the economic dynamics and reduce its impact on forecasting accuracy. The Taiwan island-wide electricity load demands from 2008 to 2011 are used as the case study for performance testing with different combinations of the Taiwan business indicator and the Taiwan Stock Exchange Capitalization-Weighted Stock Index (TAIEX). The results show that the proposed HEI-STLF system with hybrid economic indices of an annualized six-month rate of change of composite leading index and a 90 days moving average of TAIEX, achieves the best forecasting performance. Compared to the traditional SVR load forecasting approach, it improves the forecasting accuracy in the best condition by 30.39% in the period when the load demands are affected by the global economic recession.     

基于便携式智能设备的管理系统设计

 Preface Along with the improvement of intelligence level in a residential area, higher requests are brought forward to property management. Among the requests, it is impor- tant monitoring each section of the residential area in time. Presently, when property management department recording the running circumstances of public devices in a residential area, mostly there' re recorders come to the spot and fill in forms with equipment data (such as the voltage, the electric current, the tempera…     

基于本体的知识管理系统研究

目前知识管理已经成为企事业提高技术、竞争、商务和策略智能的重要手段，针对当前知识管理系统存在检索时存在大量无关知识等问题，提出了新的知识管理系统，给出了其框架结构，并研究了其实现的关键技术一一本体的建立、知识的获取、知识的存储、知识的检索。为建立企业知识管理系统提供了新的理论和方法。     

聚类算法的改进的研究

本文研究了传统的凝聚层次聚类算法和k-means聚类算法及其它们的改进算法,并将他们结合起来提出了混合文本聚类算法,该算法可以挖掘出用户感兴趣的内容。     

基于随机规划的水风电联合优化运行研究

针对风速预测精度影响水风电联合运行的优化结果,本文将在随机变量表示风电场的输出功率的基础上,建立了一种基于随机规划的水风电联合优化运行数学模型。模型以总发电量和水电厂蓄水量增量之和最大为目标,结合随机模拟技术粒子群算法求得此目标函数的全局最优值。最后,对该模型采用Matlab编程求解,仿真结果验证了文中所提方法的可行性。