Modeling and Identification for Pneumatic Control Valves with Stiction
نویسندگان
چکیده
منابع مشابه
A new stiction compensation method in pneumatic control valves
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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Inherent nonlinearities like, deadband, stiction and hysteresis in control valves degenerate plant performance. Valve stiction standouts as a more widely recognized reason for poor execution in control loops. Measurement of valve stiction is essential to maintain scheduling. For industrial scenarios, loss of execution due to nonlinearity in control valves is an imperative issue that should be t...
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Nearly 20-30% of all process control loops oscillate due to stiction and lead to loss of productivity. Thus, the detection and quantification of stiction in control valves using just the raw operating data is an important component of any automated controller performance monitoring application. Many techniques have been proposed for the detection and quantification of stiction. Pattern based id...
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ژورنال
عنوان ژورنال: IFAC-PapersOnLine
سال: 2015
ISSN: 2405-8963
DOI: 10.1016/j.ifacol.2015.12.302