A new fault isolation and identification method for nonlinear dynamic systems: Application to a fermentation process |
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Authors: | Zetao Li Boutaieb Dahhou |
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Institution: | 1. LAAS-CNRS, 7, Avenue du Colonel Roche, 31077 Toulouse Cedex 4, France;2. Electrical Engineering College, Guizhou University, Caijaguan, Guiyang, Guizhou 550003, People’s Republic of China |
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Abstract: | In this paper, a new method of fault isolation and identification based on parameter intervals for nonlinear dynamic systems is proposed. The practical domain of the value of each system parameter is divided into a certain number of intervals. After verifying all the intervals whether or not one of them contains the faulty parameter value of the system, the faulty parameter value is found, the fault is therefore isolated. The method provides the estimation of the faulty parameter value and its bounds when the fault is isolated. It fits many kinds of nonlinear dynamic systems with ideal isolation and identification speed. The performances of the proposed method are illustrated by the simulation results of a fermentation process. |
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Keywords: | Fault isolation Fault identification Nonlinear dynamic systems Parameter intervals Fermentation process |
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