An integrated approach for oscillation diagnosis in linear closed loop systems

Show simple item record Srinivasan, Babji Nallasivam, Ulaganathan Rengaswamy, Raghunathan 2014-07-22T11:16:56Z 2014-07-22T11:16:56Z 2015-02
dc.identifier.citation Srinivasan, Babji; Nallasivam, Ulaganathan and Rengaswamy, Raghunathan, “An integrated approach for oscillation diagnosis in linear closed loop systems”, Chemical Engineering Research and Design, DOI: 10.1016/j.cherd.2014.07.004, vol. 93, pp. 483-495, Jan. 2015.
dc.identifier.issn 0263-8762
dc.identifier.issn 1744-3563
dc.description.abstract In industrial plants with non-oscillatory set points, oscillation detection and diagnosis is a key step to improve plant performance and safety. Oscillations in linear closed loop systems can occur due to one or more of the following reasons: (i) changes in process/controller settings, (ii) stiction in control valves, (iii) external oscillatory disturbances, (iv) quantization effects and, (v) presence of saturation and hysteresis in closed loop systems. Though there are techniques to address oscillation diagnosis problem, there are gray areas such as the identification of multiple sources that cause oscillations in the process output. In this work, this problem is addressed through the development of an algorithm to identify multiple sources of oscillations in Single Input Single Output (SISO) loops. Further, an integrated approach to diagnose both single/multiple root causes in SISO loops is presented. Simulation and industrial case studies are provided to show the applicability of the proposed algorithms. en_US
dc.description.statementofresponsibility by Babji Srinivasan, Ulaganathan Nallasivam and Raghunathan Rengaswamy
dc.format.extent vol. 93, pp. 483-495
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject External disturbances en_US
dc.subject Interacting control loops en_US
dc.subject Multiple root cause en_US
dc.subject Oscillation diagnosis en_US
dc.subject Stiction en_US
dc.title An integrated approach for oscillation diagnosis in linear closed loop systems en_US
dc.type Article en_US
dc.relation.journal Chemical Engineering Research and Design

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