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基于改进支持向量机的风机性能在线监测平台研究 被引量:1
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作者 王松岭 许小刚 +2 位作者 刘锦廉 李非 戴谦 《流体机械》 CSCD 北大核心 2013年第11期26-31,70,共7页
风机性能实时监测对电厂安全、经济运行具有重要意义,而对风机流量的准确实时监测是风机性能在线监测的关键。针对现场缺乏大管径流量准确测量手段的现状,本文采用风机无因次性能曲线中性能参数之间稳定的映射规律,并通过不同智能算法... 风机性能实时监测对电厂安全、经济运行具有重要意义,而对风机流量的准确实时监测是风机性能在线监测的关键。针对现场缺乏大管径流量准确测量手段的现状,本文采用风机无因次性能曲线中性能参数之间稳定的映射规律,并通过不同智能算法建立了风机全程流量测量模型,结果发现改进的支持向量机模型拟合精度更高,效果更好。最后,在改进支持向量机模型基础上,采用Visual Basic语言与Matlab混合编程方法,建立了风机性能在线监测平台,实现了对风机实际工况下的流量、性能的实时监测。 展开更多
关键词 风机 性能曲线模型 支持向量机 神经网络 优化 在线监测
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Mechanical Behavior of Soybean Protein Fibers
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作者 杨庆斌 孙亚宁 +1 位作者 田琳 于伟东 《Journal of Donghua University(English Edition)》 EI CAS 2009年第1期85-88,共4页
In order to understand the relationship between the mechanical property and the effect of bleaching and dyeing to the soybean protein fibers(SPF),four mechanical models are chosen.The tensile and relaxation property o... In order to understand the relationship between the mechanical property and the effect of bleaching and dyeing to the soybean protein fibers(SPF),four mechanical models are chosen.The tensile and relaxation property of the soybean protein fibers are analyzed.The tensile and relaxation curves are fitted with the suitable model.It shows that the relaxation property of SPF is in accordance with the standard linear solid model.Estimates of the Hookean spring modulus at 8% and at 10% are different,so some structural modifications could be produced by the strain.Bleached fibers show a higher level of relaxation than raw fibers and dyed fibers.Bleaching has a remarkable influence on decreasing tenacity at break for each test modality.Knotted and looped modalities decrease fiber tenacity remarkably in all three samples. 展开更多
关键词 soybean protein fiber tensile property relaxation property
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