Detection and Diagnosis of Stiction in Control Loops - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Detection and Diagnosis of Stiction in Control Loops write by Mohieddine Jelali. This book was released on 2009-10-13. Detection and Diagnosis of Stiction in Control Loops available in PDF, EPUB and Kindle. In the process industries, stiction is the most common performance-limiting valve problem and over the last decade numerous different techniques for overcoming it have been proposed. This book represents a comprehensive presentation of these methods, including their principles, assumptions, strengths and drawbacks. Guidelines and working procedures are provided for the implementation of each method and MATLAB®-based software can be downloaded from www.ualberta.ca/~bhuang/stiction-book enabling readers to apply the methods to their own data. Methods for the limitation of stiction effects are proposed within the general context of: oscillation detection in control loops, stiction detection, diagnosis and stiction quantification and diagnosis of multiple faults. The state-of-the-art algorithms presented in this book are demonstrated and compared in industrial case studies of diverse origin – chemicals, building, mining, pulp and paper, mineral and metal processing.
Detection and Diagnosis of Control Loop Nonlinearities, Valve Stiction and Data Compression
Detection and Diagnosis of Control Loop Nonlinearities, Valve Stiction and Data Compression - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Detection and Diagnosis of Control Loop Nonlinearities, Valve Stiction and Data Compression write by Ali Ahammad Shoukat Choudhury. This book was released on 2005. Detection and Diagnosis of Control Loop Nonlinearities, Valve Stiction and Data Compression available in PDF, EPUB and Kindle.
Diagnosis of Process Nonlinearities and Valve Stiction
Diagnosis of Process Nonlinearities and Valve Stiction - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Diagnosis of Process Nonlinearities and Valve Stiction write by Ali Ahammad Shoukat Choudhury. This book was released on 2009-08-29. Diagnosis of Process Nonlinearities and Valve Stiction available in PDF, EPUB and Kindle. were published in the series as the contributed volume, Process Control Performance Assessment: From Theory to Implementation with Andrzej Ordys, Damian Uduehi, and Michael Johnson as Editors (ISBN 978-1-84628-623-0, 2007). Along with this good progress in process controller assessment methods, researchers have also been investigating techniques to diagnose what is causing the process or control loop degradation. This requires the use of on-line data to identify faults via new diagnostic indicators of typical process problems. A significant focus of some of this research has been the issue of valve problems; a research direction that has been motivated by some industrial statistics that show up to 40% of control loops having performance degradation attributable to valve problems. Shoukat Choudhury, Sirish Shah, and Nina Thornhill have been very active in this research field for a number of years and have written a coherent and consistent presentation of their many research results as this monograph, Diagnosis of Process Nonlinearities and Valve Stiction. The Advances in Industrial Control series is pleased to welcome this new and substantial contribution to the process diagnostic literature. The reader will find the exploitation of the extensive process data archives created by today’s process computer systems one theme in the monograph. From another viewpoint, the use of higher-order statistics could be considered to provide a continuing link to the earlier methods of the statistical process control paradigm.
Diagnosis of Process Nonlinearities and Valve Stiction
Diagnosis of Process Nonlinearities and Valve Stiction - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Diagnosis of Process Nonlinearities and Valve Stiction write by Ali Ahammad Shoukat Choudhury. This book was released on 2008-08-20. Diagnosis of Process Nonlinearities and Valve Stiction available in PDF, EPUB and Kindle. were published in the series as the contributed volume, Process Control Performance Assessment: From Theory to Implementation with Andrzej Ordys, Damian Uduehi, and Michael Johnson as Editors (ISBN 978-1-84628-623-0, 2007). Along with this good progress in process controller assessment methods, researchers have also been investigating techniques to diagnose what is causing the process or control loop degradation. This requires the use of on-line data to identify faults via new diagnostic indicators of typical process problems. A significant focus of some of this research has been the issue of valve problems; a research direction that has been motivated by some industrial statistics that show up to 40% of control loops having performance degradation attributable to valve problems. Shoukat Choudhury, Sirish Shah, and Nina Thornhill have been very active in this research field for a number of years and have written a coherent and consistent presentation of their many research results as this monograph, Diagnosis of Process Nonlinearities and Valve Stiction. The Advances in Industrial Control series is pleased to welcome this new and substantial contribution to the process diagnostic literature. The reader will find the exploitation of the extensive process data archives created by today’s process computer systems one theme in the monograph. From another viewpoint, the use of higher-order statistics could be considered to provide a continuing link to the earlier methods of the statistical process control paradigm.
Control Loop Performance Monitoring -
Control Loop Performance Monitoring - - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Control Loop Performance Monitoring - write by Ranganathan Srinivasan. This book was released on 2010-10. Control Loop Performance Monitoring - available in PDF, EPUB and Kindle. Controller Performance Monitoring involves the following three routine activities: (1) monitor the performance of each loop, (2) isolate poorly performing loops and (3) diagnose the cause of poor performance. A typical processing industry installs several hundreds of control loops to achieve the desired process performance. Recent studies reveal that only about one-third of controllers provide acceptable performance, indicating significant commercial benenfits exist in diagnosing and improving the remaining two thirds of the control loops. Recent surveys indicate that 20% to 30% of all control loops oscillate due to valve problems caused by static friction (also referred as stiction). Two different techniques for diagnosing stiction using routine operating data have been proposed. The success of these approaches is built on a new technique that detects and characterizes oscillations in control loops. An integrated solution strategy to compensate stiction is provided. Stiction detection and diagnosis techniques are validated on a large industrial data set.
