Download the full-sized PDF
Permanent link (DOI): https://doi.org/10.7939/R3ZB00
This file is in the following communities:
|Graduate Studies and Research, Faculty of|
This file is in the following collections:
|Theses and Dissertations|
Control loop performance assessment with closed-loop subspace identification Open Access
- Other title
- Type of item
- Degree grantor
University of Alberta
- Author or creator
Danesh Pour, Nima
- Supervisor and department
Shah, Sirish L. (Chemical and Materials Engineering)
Huang, Biao (Chemical and Materials Engineering)
- Examining committee member and department
Chen, Tongwen (Electrical and Computer Engineering)
Lee, Jong Min (Chemical and Materials Engineering)
Department of Chemical and Materials Engineering
- Date accepted
- Graduation date
Master of Science
- Degree level
This thesis is concerned with subspace identification and its applications for controller performance assessment and process modeling from closed-loop data.
A joint input-output closed-loop subspace identification method is developed which provides consistent estimation of the subspace matrices and the noise covariance matrix required for the LQG benchmark curve estimation.
Subspace LQG benchmark is also used for performance assessment of the cascade supervisory-regulatory control systems.
Three possible scenarios for LQG control design and performance improvement are discussed for this structure. A closed-loop subspace identification method is also provided for estimation of the subspace matrices necessary for performance assessment.
A method of direct step model estimation from closed-loop data is provided using subspace identification. The variance calculation required for this purpose can be performed using the proposed method. The variances are used for weighted averaging on the estimated Markov parameters to attenuate the noise influence on the final step response estimation.
- Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
- Citation for previous publication
- Date Uploaded
- Date Modified
- Audit Status
- Audits have not yet been run on this file.
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 2235142
Last modified: 2015:10:12 16:47:17-06:00
Filename: Danesh Pour_ Nima_ Fall09.pdf
Original checksum: bbc059a9ee4c08fa36932d6759a47559
Well formed: true
Page count: 130