Quantification of state estimator performance in presence of model plant mismatch for multivariate system

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dc.contributor.author Gaurav, kumar
dc.date.accessioned 2017-03-23T05:55:41Z
dc.date.available 2017-03-23T05:55:41Z
dc.date.issued 2016
dc.identifier.citation Gaurav, kumar. (2016). Quantification of state estimator performance in presence of model plant mismatch for multivariate systems. Indian Institution of Technology Gandhinagar, pp. 47. (Acc No: T00137) en_US
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2758
dc.description.abstract This article proposes a data driven technique for quantifying the performance of state estimators in the presence of a mismatch between plant dynamics and the model used for estimation. A two step approach is proposed in which Hurst exponent of posteriori error (difference between plant measurement, 𝑦 𝑘 and updated estimator outputs 𝑦^) is calculated which is then used as feature vector. This feature vector can quantify mismatch for univariate 𝑘|𝑘 systems but for multivariate systems correlation in between variables can be taken into account by calculating Mahalanobis distance of the Hurst exponents. Mahalanobis distance of feature vector (Hurst exponent) provide a metric which can quantify the model plant mismatch. This two steps technique can be applied to estimated states also when enough measurements are not provided by process. The procedure is tested on two non-linear systems and simulation results reveal that the technique serves as a tool that (i) can quantify the performance of a state estimator in a multivariate system, (ii) is independent of computation theory of estimators en_US
dc.description.statementofresponsibility by kumar Gaurav
dc.format.extent 40 p,: col., ill; 30 cm+.
dc.language.iso en_US en_US
dc.publisher Indian Institute of Technology Gandhinagar en_US
dc.title Quantification of state estimator performance in presence of model plant mismatch for multivariate system en_US
dc.type Thesis en_US
dc.contributor.department Electrical Engineering
dc.description.degree M.Tech.


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