Analysis of Control Valves Stiction Quantification Tool
نویسندگان
چکیده
منابع مشابه
Detection of Stiction in Control Valves
Valve stiction is one of the largest stand-alone reasons for oscillatory behavior in process industry. It is reported by Siemens Oil and Gas that valve stiction is a problem that is hard and time consuming to detect at offshore production plants for oil and gas. As a result, Siemens Oil and Gas wants to develop an algorithm that detects stiction. The algorithm is thought to be a feature of the ...
متن کاملDetection and Quantification of Control Valve Stiction
Stiction is one of the most common problems in the spring-diaphragm type control valves, which are widely used in the process industry. Although there have been many attempts to understand and detect stiction in control valves, none of the current methods can simultaneously detect and quantify stiction. There is thus a clear need in the process industry for a non-invasive method that can not on...
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AbstractIn this paper, a new compensator is designed so as to eliminate the effect of stiction in the control loop. A wellknown stiction compensation method is proposed that reduces variability both at process variable and valve stem movement. Pneumatic control valves are widely used in the process industry. Stiction is the most common and one of the long-standing problems in the pneumatic cont...
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Oscillations in control loops lead to poor controller performance. Stiction in control valves is one of the major causes of such oscillations. Therefore, the correct diagnosis of stiction is important. There are several methods for detecting stiction, but quantification of stiction still remains a challenge. Two parameters are used to model the stiction phenomenon successfully, namely, deadband...
متن کاملA segmentation-based approach for detection of stiction in control valves
A method for detecting static friction (stiction) in control valves is proposed. The method is model-based and is inspired by ideas from the fields of change detection and multi-model mode estimation. Opposed to existing methods only limited process knowledge is needed and it is not required that the loop has oscillating behavior. The advantage of the method is illustrated in both numerical sim...
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ژورنال
عنوان ژورنال: ASEAN Journal of Chemical Engineering
سال: 2017
ISSN: 2655-5409,1655-4418
DOI: 10.22146/ajche.49895