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HVAC
暖通冷凝器计算的excel表格计算文档，比较实用(HVAC condenser calculation excel spreadsheet documents, more practical)
- 2013-06-27 14:36:13下载
- 积分：1
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juliangfa
说明： 设计一八木天线，振子数目为4，长度分别为：反射器长度0.39，主馈振子长度0.356，引向器长度均为0.3；反射器和主馈振子的距离0.265，主馈振子和第一引向器的距离0.2575，第一引向器和第二引向器的距离0.225。天线工作频率为400MHz，各振子分段数为9。
利用矩量法模拟该天线的电流分布，并绘制方向图。(A eight wood antenna is designed. The number of vibrators is 4 and the length is 0.39 for the reflector, 0.356 for the main feeder and 0.3 for the director. The distance between the reflector and the main feeder is 0.265, 0.2575 for the main feeder and the first director. The distance between the first director and the second director is 0.225. The working frequency of the antenna is 400MHz and the number of segments of each vibrator is 9.)
- 2020-02-20 22:53:54下载
- 积分：1
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power_wind_dfig_2017_11_23
该simulink仿真了一个9MW风电场的运行情况，由6台1.5MW风力机组成。(The Simulink simulates the operation of a 9MW wind farm, consisting of 6 1.5MW wind turbines.)
- 2017-11-24 11:45:46下载
- 积分：1
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地图编辑器 能对一半要求的地图编辑并且产生编码
地图编辑器 能对一半要求的地图编辑并且产生编码-Map Editor can request half of the map editor and generate code
- 2022-08-03 09:54:00下载
- 积分：1
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此代码为udp通信程序，主要是从客户端发送一数据，然后在在服务器段接收。...
此代码为udp通信程序，主要是从客户端发送一数据，然后在在服务器段接收。-This code for the udp communication procedures, mainly from one client to send data, and then the server receives paragraph.
- 2023-06-24 09:45:04下载
- 积分：1
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这个代码写在巴斯科姆编译器控制和制动装置
this code write under bascom compiler for control and trig a device
- 2022-08-08 04:22:46下载
- 积分：1
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一个制作网页特效的脚本1，很好用的 各位个人主页的制作人一定有用...
一个制作网页特效的脚本1，很好用的 各位个人主页的制作人一定有用-netnew a production of a script, the good personal home page you must produce useful
- 2022-01-31 11:13:45下载
- 积分：1
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美的SH201电磁炉核心小板
这是本人在维修电磁炉的工作过程中，按照原板的引脚及定义画下来的！有需要的请下载...
美的SH201电磁炉核心小板
这是本人在维修电磁炉的工作过程中，按照原板的引脚及定义画下来的！有需要的请下载-The core of America" s SH201 cooker small plates
- 2022-12-19 13:10:04下载
- 积分：1
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针对矿浆管道工况调整给泄漏检测带来的干扰
说明： 针对矿浆管道工况调整给泄漏检测带来的干扰，准确提取泄漏信号的特征量是降低泄漏误报、漏报的关键。为此，提出了一种基于经验模态分解（EMD）、Hilbert能量谱与变量预测模型（VPMCD）相结合的泄漏检测方法。该方法首先将压力信号分解成若干个固有模态函数（IMF）之和，然后将IMF分量进行Hilbert变换得到局部Hilbert能量谱，依据能量分布的标准差选择最能准确反映矿浆管道运行工况的局部能量谱作为特征值向量，最后通过VPMCD分类器建立泄漏识别模型。将该方法应用于泄漏检测中，实验结果表明，矿浆管道在正常运行、泄漏和工况调整状态下，识别率达到95%，并综合分析流量信号，提高了泄漏检测精度。(According to the interference to leak detection of mineral slurry pipeline caused by work condition adjustment,effectively extracting the characteristics of leak signal is the key to reduce the leakage of the false negatives and false positives.In this paper,a leak detection method based on EMD and VPMCD is proposed. In this method,the pressure signals are decomposed into several IMF components, and then take local Hilbert energy spectrum which most accurately reflect the pipeline operation conditions as feature values, Finally the leak identification model is established by VPMCD classifier.When the method is applied to the leak detection,the experimental results show that under the conditions of normal operation,leakage and work condition adjustment, the recognition rate of the mineral slurry pipeline reaches 95%,and by comprehensively analyzing the flow signals, it also improves the accuracy of leak detection.)
- 2020-12-03 10:09:25下载
- 积分：1
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ZD-BS是一个基于asp+access的个人blog系统
程序特点:
1.数据结构合理，执行效率高
2.缓存优化，在资源和效率上充分考虑平衡
3.可定制能力强，并不是傻瓜式系统，如果需要，用户应当修改源码(参考下面使用说明)
4.开源，免费
用户admin密码admin
编辑注：这个版本是无数据库的，所以只能升级不能重新安装，(为方便新使用朋友在data目录下的数据库为1.2的可以正常使用.)只需要把原来zd-bs的数据库复制进去就可以了，链接参数等请修改config.asp。在IE6下后台的表格可能会出现width100％的bug-ZD-BS is based on asp+ Access personal blog system program characteristics: 1. A reasonable data structure to implement high efficiency 2. Cache optimization, efficiency in terms of resources and take full account of the balance 3. Customizable ability, not a fool system, if required, the user should modify source code (refer to the following instructions) 4. open source, free user admin password admin edit note: this version is no database, we can only upgrade can not be re-installed, (For the convenience of the new use friends in the data directory of the database for normal use can be 1.2.) only to the original database zd-bs copy into it, modify the link parameters config.asp. In IE6 the backgrou
- 2023-07-14 03:15:03下载
- 积分：1
