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控制阀粘滞特性的频域检测方法研究 被引量:2

Spectral method for detection of stiction in control valves
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摘要 控制阀粘滞特性是导致控制回路振荡的主要原因之一,对控制阀粘滞特性进行了详细分析,在此基础上使用离散傅里叶变换分析振荡的偏差信号,提出了一种频域分析、适用范围较广的控制阀粘滞特性检测方法。通过仿真研究,表明了该方法的有效性。 Stiction is the most common problem in control valves,which causes oscillations in control loops.This paper proposes a spectral method based on Discrete Fourier Transformation to detect valve stiction for diagnosis of oscillations.The spectral method can be used for both self-regulating processes and integrating processes.The effectiveness of the proposed method is demonstrated with the studies of simulation.
出处 《计算机工程与应用》 CSCD 北大核心 2010年第33期244-248,共5页 Computer Engineering and Applications
基金 国家自然科学基金No.60721062 国家高技术研究发展计划(863)No.2007AA04Z162~~
关键词 粘滞特性 控制阀 频域分析 傅里叶级数 stiction control valve spectrum analysis Fourier series
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