A class of pole sensitivity optimization structures of an FWL digital controller (Q2705716)
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scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A class of pole sensitivity optimization structures of an FWL digital controller |
scientific article |
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19 March 2001
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finite word length digital controller
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optimal structures
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pole sensitivity
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rounding errors
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A class of pole sensitivity optimization structures of an FWL digital controller (English)
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This paper studies a class of optimal structures of a finite word length (FWL) digital controller, focusing on the main pole sensitivity with respect to the rounding errors associated with the controller realization. Expressions are derived for the closed loop poles sensitivity and a sensitivity measure is introduced which is proved to be coordinate dependent. A controller structure minimizing the sensitivity measure is derived. The paper contains a numerical example involving a fourth order two input/two output system which illustrates the computation of the optimal controller matrices.
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