Subspace Identification of Unstable Transfer Function Models
| Autor: | M. Chidambaram, C. Sankar Rao |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Stochastic modelling
General Chemical Engineering Bode plot 02 engineering and technology Filter (signal processing) 010501 environmental sciences Residual 01 natural sciences Transfer function Identification (information) 020401 chemical engineering Control theory 0204 chemical engineering MATLAB computer Subspace topology 0105 earth and related environmental sciences Mathematics computer.programming_language |
| Zdroj: | Indian Chemical Engineer. 59:1-20 |
| ISSN: | 0975-007X 0019-4506 |
| DOI: | 10.1080/00194506.2015.1037364 |
| Popis: | This paper deals with the subspace identification of unstable transfer function models with numerator dynamics and time delays. The unstable transfer function models are simulated and identified by the present method for both deterministic and stochastic cases. Two case studies are considered for evaluating the performance of the present method. The quality of the identified model is tested by mean relative square error and mean-related variance indices. The problem associated with the identification of unstable systems corresponding to stable systems in terms of sampling time, need for improved filter, achievable performance evaluation and validation is brought out. The simulation results are compared by means of Bode plot and estimated poles with the real pole of the true plant. The model is validated through the residual analysis. A computer programme (in MATLAB) is also provided. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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