Sequential Identification of Engine Subsystems by Optimal Input Design
Complexity and nonlinearity of engines makes precise first principle engine models often difficult to obtain, as for instance for emissions. System identification is a well known possible alternative, successfully used in several automotive applications. In most cases system identification is concer...
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| Veröffentlicht in: | SAE International journal of engines 2009-01, Vol.2 (2), p.562-569, Article 2009-24-0132 |
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| container_title | SAE International journal of engines |
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| creator | Hirsch, Markus del Re, Luigi |
| description | Complexity and nonlinearity of engines makes precise first principle engine models often difficult to obtain, as for instance for emissions. System identification is a well known possible alternative, successfully used in several automotive applications. In most cases system identification is concerned with the estimation of the unknown parameters of a known set of equations. Unfortunately, for many engine subsystems, there is no sufficiently precise or real time suitable model. This paper presents a sequential algorithm which allows to derive real time suitable models on line by a combination of model structure hypothesis of increasing complexity and an associated optimal input design and selection process. This paper introduces the method and shows its use both for a rather simple and a very difficult engine identification task, a dynamical model of the airpath of a Diesel engine and a dynamical model of nitrogen oxides and particulate matter. |
| doi_str_mv | 10.4271/2009-24-0132 |
| format | Article |
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| identifier | ISSN: 1946-3936 |
| ispartof | SAE International journal of engines, 2009-01, Vol.2 (2), p.562-569, Article 2009-24-0132 |
| issn | 1946-3936 1946-3944 1946-3944 |
| language | eng |
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| source | JSTOR |
| subjects | Algorithms Automotive engines Complexity Diesel engines Dynamic modeling Dynamic models Engine design Engines First principles Nitrogen oxides Parameter estimation Parameter identification Parametric models Particulate emissions Real time Subsystems System identification |
| title | Sequential Identification of Engine Subsystems by Optimal Input Design |
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