Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 538200
Title An Efficient Method to Assess Local Controllability and Observability for Non-Linear Systems
Author(s) Stigter, J.D.; Willigenburg, L.G. van; Molenaar, J.
Source IFAC-PapersOnLine 51 (2018)2. - ISSN 2405-8963 - p. 535 - 540.
DOI https://doi.org/10.1016/j.ifacol.2018.03.090
Department(s) Biometris (WU MAT)
PE&RC
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Local Controllability - Local System Structure - Observability - Sensitivity Analysis
Abstract

Controllability and observability are two fundamental system properties that yield insight in the structural relationships between state-, input-, and output variables. It is well-known that for non-linear type of system models these structural properties are difficult to analyse, especially if the size of the corresponding model is large. A sensitivity based method to assess local controllability and observability for non-linear systems in a simple way is discussed here and its validity is demonstrated with some examples taken from various applications in the control literature. A major advantage of our sensitivity based approach is that no Lie-derivatives or Lie-brackets have to be calculated and this results in a fast algorithm for structural system analysis. An optional second step in the analyses is the verification of a lack of observability/controllability, once obtained in the first step, with a simplified symbolic computation. Finally, the so-called observability- and controllability signatures of a given system are presented that characterize local observability/controllability and yield a succinct visual summary of these fundamental system properties.

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