Prediction error identification method for continuous-time processes with time delay
SCIE
SCOPUS
- Title
- Prediction error identification method for continuous-time processes with time delay
- Authors
- Sung, SW; Lee, IB
- Date Issued
- 2001-11-28
- Publisher
- AMER CHEMICAL SOC
- Abstract
- We propose a continuous-time prediction error identification method to identify combined deterministic-stochastic continuous-time processes with time delay. It minimizes the prediction error using the Levenberg-Marquardt optimization method with exact derivatives of the objective function with respect to the adjustable parameters that include the time delay. Compared with previous discrete-time identification methods, the proposed method does not suffer from a small sampling time problem. Also, while previous continuous-time approaches using transforms cannot treat a large sampling time, the proposed method can incorporate directly both small and large sampling times as well as irregular sampling time. It can determine the time delay systematically; meanwhile, previous methods use ad hoe approaches. We derive the error covariance matrix and justify the small sampling problem of discrete-time identification methods.
- Keywords
- TRANSFER-FUNCTION MATRIX; CONTINUOUS SYSTEMS; RECURSIVE-IDENTIFICATION; PARAMETER-ESTIMATION; PID CONTROLLERS; ALGORITHMS; MODELS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19295
- DOI
- 10.1021/ie0100636
- ISSN
- 0888-5885
- Article Type
- Article
- Citation
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 40, no. 24, page. 5743 - 5751, 2001-11-28
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