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Profibus总线在城市垃圾处理自动控制系统中的应用 总被引:2,自引:0,他引:2
随着中国经济的迅速发展,城市垃圾的数量和规模也在不断增加,实现整个处理过程无人化自动化已经迫在眉睫,本文结合Profibus技术讨论了城市垃圾处理系统方案的设计构思及实现,本方案的实施将在国内开创一条变废为宝、实现生活垃圾资源化的崭新途径。 相似文献
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翟世宽 《可编程控制器与工厂自动化(PLC FA)》2010,(6):104-108
本文在10+10吨桥吊升降电气控制系统图系统分析的基础上,针对原电气系统控制运行稳定性缺陷,结合德国金钟默勒ESAY智能控制器的优点,实现桥吊升降控制系统EASY的自动化项目改造,取得预期效果。 相似文献
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随着各变电站、变电所、输电线路少人或无人化值守的普及,如何保证在电力自动化程度不断提高的同时加强安全生产管理、增强前端事故处理效率和节约车辆资产成本成为了新的电力研究课题。本项目研究通过采用高清音视频设备,移动无线转输技术,对海量音视频数据进行采集和综合处理,实现了变电所远程运行操作视频监视和远方现场移动音视频运行操作监护。 相似文献
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大型风力发电机组吊状技术是风力发电的基本环节,也是目前电力基本建设中遇到的新问题。本吊状技术采用倒落式人字抱杆整体起吊的原理,能克服起吊设备条件和现场地形条件的限制,已形成为一种吊状作业新工艺,经实践,本工艺已基本完善,极具推广应用价值。 相似文献
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三维虚拟环境建模是实现流域虚拟仿真模拟的基础工作,快速智能地生成三维地形地物则是流域建模的关键技术。结合松花江流域地形建模和哈尔滨市建筑物建模,基于VirtualPlanetBuilder(VPB)和osgGIS进行了地形地物建模方法研究。阐述了基于地形DEM和遥感影像的流域多层次地形建模技术,探讨了多源数据的组织与利用方法。分别研究了线状地物和面状地物的参数设置方法,包括线状地物随地形起伏的设置、建筑物高度及顶面与侧面纹理的设置等。基于VPB和osgGIS的建模方法可以支持不同格式、不同精度和坐标系的原始数据,建模自动化程度高,生成的模型支持多层细节和基于外存的调度模式,可以为海量模型的实时调度渲染提供模型支持,是流域仿真模拟中三维地形地物的快速生成方案。 相似文献
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《电气》2011,(2):14-18
With the incessant development of power market reform,the existing cross-subsidy in electricity tariffs has become a critical problem in China’s power industry development.On the basis of the theories of cross-subsidy and electricity universal service,the authors take foreign countries’ experience as reference to design several solutions to cross-subsidies in electricity tariffs in different phases of China’s power industry development.Furthermore,the application and implementation of these solutions are analyzed in this paper. 相似文献
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The author suggests that the confidence which many biologists have in problem-solving methods is unwarranted and that there are very important limitations in almost all current methods for solving biological problems. The standard problem solving approach that computer scientists use is outlined. An example of an error in an evolutionary tree problem-the case of the African Eve-is discussed 相似文献
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无色透明材料形成的单层薄膜,其颜色由干涉色决定。以白光照射其表面,随薄膜厚度的增加,将出现一系列色彩,这是由薄膜干涉所致。我们可以根据薄膜颜色,估计薄膜厚度。显然,当厚度增大到后界面的影响可以忽略不计的程度(相当于只有一个界面的半无限大情形,本文简称“厚膜”),则“厚膜”颜色恢复为无色透明。半透明材料在基底上形成的薄膜系统,以白光照射所呈现的颜色,由于基底及吸收的影响,则不能简单地以薄膜干涉来分析。对于半透明薄膜系统,首先测量它的光强反射率谱和透射率谱,运用传递矩阵[1]方法计算出薄膜的介质光学常数,再以光学常数计算单层薄膜与“厚膜”的光强透射率谱与反射率谱及它们的色坐标。以菲涅耳公式计算出的反射率谱为半无限大介质反射率谱,这时的色坐标可视为“厚膜”的色坐标。 相似文献
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A survey is provided of Japanese research on ceramic materials for substrates, microwave dielectric ceramics, piezoelectric ceramics, semiconducting ceramics, and superconducting ceramics. Novel processing technologies are described, covering the use of amorphous materials, superfine powders, lamination, multilayer thin films, porous ceramics, and superlattices 相似文献
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Recent progress in inverse problems in electrocardiology 总被引:5,自引:0,他引:5
The considerable progress achieved in the inverse problem of electrocardiography over the last decade has provided grounds for optimism about the possibility of approaching significant clinically relevant applications in the next decade. However, there are a number of basic questions that still remain. In addressing these questions, the authors feel it is important to seek solutions that emphasize physiological rather than mathematical significance. This approach leads to twin requirements for useful inverse solutions: accuracy, defined in a physiologically meaningful (and not just averaged and mathematical) sense, and reliability, not only to measurement noise but also to geometric modeling errors and other uncertainties that are inescapable in practical application. Studies using analytically tractable models may still be relevant, but it seems more important to find solutions to practical inverse problems, which will move the field toward wider acceptance and credibility 相似文献
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