| 自适应ANC技术在热工特征信号提取中的应用研究 |
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| 引用本文： | 朱红路,刘吉臻,常太华,田亮. 自适应ANC技术在热工特征信号提取中的应用研究[J]. 微计算机信息, 2010, 0(7) |
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| 作者姓名： | 朱红路 刘吉臻 常太华 田亮 |
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| 作者单位： | 华北电力大学(北京)自动化系; |
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| 基金项目： | 基金申请人:刘吉臻;项目名称:复杂热力系统信息相关性分析及状态重构;基金颁发部门:国家自然科学基金委(50776030) |
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| 摘 要： | 随着对火电厂控制运行水平的要求不断提高,先进的控制、诊断、优化功能需要一些难以测量或测量不准确的状态参量,而该类参量往往包含有很多噪声干扰难以直接分析。为更好分析热工过程对象特性,还原被噪声所掩盖的潜在信息,提出了一种改进的Sigmoid函数变步长LMS算法,利用自适应噪声抵消的方法对受到扰动影响的热工对象输出数据进行分析处理,降低干扰因素影响,从而使原始特征信号得到相对精确的恢复。现场数据分析表明了该算法的有效性和可行性。
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| 关 键 词： | 热工过程 特征信号提取 自适应噪声消除 最小均方算法 |
Study on Adaptive Noise Cancelling and Its Application on Characteristic Extracting for Thermal Process |
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| ZHU Hong-lu LIU Ji-zhen CHANG Tai-hua TIAN Liang. Study on Adaptive Noise Cancelling and Its Application on Characteristic Extracting for Thermal Process[J]. Control & Automation, 2010, 0(7) |
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| Authors: | ZHU Hong-lu LIU Ji-zhen CHANG Tai-hua TIAN Liang |
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| Affiliation: | ZHU Hong-lu LIU Ji-zhen CHANG Tai-hua TIAN Liang(Department of Automation in North China Electric Power University,Beijing 102206,China) |
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| Abstract: | Along with the increasing requests of the control level for power plant operation,the accurate state parameters are needed for the advanced control,diagnosis and optimization function.But the clarity of the signal of the state parameter is obscured by all kinds of noise in thermal system and difficult to analyse.To analyse the thermal system and pick up the information covered by the noise,an improved variable step -size LMS method based on Sigmoid function was presented.Adaptive noise canceling method is u... |
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| Keywords: | thermal processes characteristic extracting adaptive noise cancellation LMS algorithm |
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