Shape-Based Pattern Recognition Approaches toward Oscillation Detection

A Memarian, SK Damarla, B Huang… - Industrial & …, 2024 - ACS Publications
Oscillation in control loops is a frequent problem in the process industries. These oscillations
directly impact product quality, leading to a decreased plant profit. Additionally, oscillations …

[HTML][HTML] A one-class support vector machine for detecting valve stiction

H O'Neill, Y Khalid, G Spink, P Thorpe - Digital Chemical Engineering, 2023 - Elsevier
In industrial processes, control valve stiction is known to be one of the primary causes for
poor control loop performance. Stiction introduces oscillatory behaviour in the process …

Statistical test-based practical methods for detection and quantification of stiction in control valves

SK Damarla, X Sun, F Xu, A Shah… - Industrial & Engineering …, 2023 - ACS Publications
Control valve, affected by stiction, causes closed-loop signals to experience oscillations,
which ultimately leads to a decrease in product quality, reduced plant throughput, and …

Oscillation Detection and Root Cause Analysis with Machine Learning

A Memarian - 2024 - era.library.ualberta.ca
Abnormal events in chemical processes present significant challenges, often disrupting the
performance of industrial operations. Accurate detection and diagnosis of abnormal …

Method for detecting and quantifying valve stiction in process control loops

SK Damarla, SUN Xi Chris, B Huang… - US Patent App. 18 …, 2024 - Google Patents
A standard deviation based method for detection and quantification of stiction in a control
valve in a process control loop is provided, the process control loop having a sensor for …