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基于影子趋势对比的矿热炉炉况在线辨识及趋势预测 被引量:3
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作者 李沛 阳春华 +1 位作者 贺建军 桂卫华 《自动化学报》 EI CAS CSCD 北大核心 2021年第6期1343-1354,共12页
矿热炉埋弧冶炼炉况影响因素复杂且偶发迁移和跃变,炉况发展趋势难以把握,给冶炼过程控制带来挑战.对此,本文在深入分析埋弧冶炼机理的基础上,建立了可表征反应区内电弧热与电阻热交互耦合关系的反应区操作电阻模型,实现炉况发展趋势的... 矿热炉埋弧冶炼炉况影响因素复杂且偶发迁移和跃变,炉况发展趋势难以把握,给冶炼过程控制带来挑战.对此,本文在深入分析埋弧冶炼机理的基础上,建立了可表征反应区内电弧热与电阻热交互耦合关系的反应区操作电阻模型,实现炉况发展趋势的在线跟踪.当炉况发生迁移或跃变时,利用前序炉况下所得模型生成影子趋势信息,并综合考虑冶炼工艺及电弧电阻与料层电阻的动态特性差异,辨析炉况变化的成因,形成规则化的待辨识参数在线选取方法,解决了炉况变化前后采样点少,传统辨识方法无法适用的问题.工业现场验证表明,所提出方法可在复杂条件下对冶炼炉况进行准确跟踪,并给出可靠的炉况发展趋势预测,为冶炼过程的精细化生产奠定了基础. 展开更多
关键词 埋弧冶炼 操作电阻 炉况预测 影子趋势
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Sustainable Growth in China’s Communications Field: Trend Analysis of Impact of China’s Academic Publications
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作者 贺德方 潘云涛 +1 位作者 马峥 王菁婷 《China Communications》 SCIE CSCD 2013年第3期157-163,共7页
China's cormaaunications industry is an important part of the electronic information industry, and plays a significant role in the national informatization process. In 2006, China issued its National Plans for Medium... China's cormaaunications industry is an important part of the electronic information industry, and plays a significant role in the national informatization process. In 2006, China issued its National Plans for Medium and Long-term Development of Science and Technology (2006-2020) (NPMLDST). Since 2006, there has been a rapid increase in the number of citations of China's interna- tional papers in the field of communications. In accordance with the goals listed in the NPMLDST, China needs to over- take several competitors by 2020 to be among the top five countries in the field of natural science field. By comparing two Essential Science Indicators (ESI) (i.e., the total number of citations and the number of citations per paper) for China and other countries, China's annual growth rate is found to exceed that of other influential countries in the field of sci- ence and technology, and exhibits evident growth-type characteristics. Besides, our study also shows that the short- age of high-quality academic papers in China is the main obstacle to improving the impact of China's academic publications. 展开更多
关键词 academic publications China's communications field CITATIONS Essential Science Indicators growth trend
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