Optimal finite-precision digital controller realizations based on an improved closed-loop stability measure
Optimal finite-precision digital controller realizations based on an improved closed-loop stability measure
This paper investigates the stability issue of the discrete-time control system, where a digital controller, implemented with finite word length (FWL), is used. A new tractable stability measure is derived, which is much less conservative than some existing measures in estimating the closed-loop stability robustness of an FWL implemented controller. An optimisation procedure is developed based on this improved measure to find the optimal realization for a general controller structure that includes output-feedback and observer-based controllers. Numerical examples are used to verify the theoretical analysis and to illustrate the design procedure.
CD-ROM, 6 pages
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Wu, J.
5a0119e5-a760-4ff5-90b9-ec69926ce501
Istepanian, R.H.
f512e6a3-c2ce-4288-8b5f-d32995b8e1c0
Li, G.
f0f77e84-2dca-4e91-854e-156d36434431
September 2000
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Wu, J.
5a0119e5-a760-4ff5-90b9-ec69926ce501
Istepanian, R.H.
f512e6a3-c2ce-4288-8b5f-d32995b8e1c0
Li, G.
f0f77e84-2dca-4e91-854e-156d36434431
Chen, S., Wu, J., Istepanian, R.H. and Li, G.
(2000)
Optimal finite-precision digital controller realizations based on an improved closed-loop stability measure.
Proceedings of UKACC International Conference on Control 2000 (Cambridge, UK),Sept.4-7, 2000..
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Abstract
This paper investigates the stability issue of the discrete-time control system, where a digital controller, implemented with finite word length (FWL), is used. A new tractable stability measure is derived, which is much less conservative than some existing measures in estimating the closed-loop stability robustness of an FWL implemented controller. An optimisation procedure is developed based on this improved measure to find the optimal realization for a general controller structure that includes output-feedback and observer-based controllers. Numerical examples are used to verify the theoretical analysis and to illustrate the design procedure.
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ukacc2000
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Published date: September 2000
Additional Information:
presented at UKACC Control 2000 (Cambridge, UK), Sept.4-7, 2000. Organisation: UKACC
Venue - Dates:
Proceedings of UKACC International Conference on Control 2000 (Cambridge, UK),Sept.4-7, 2000., 2000-09-01
Organisations:
Southampton Wireless Group
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Local EPrints ID: 253037
URI: http://eprints.soton.ac.uk/id/eprint/253037
PURE UUID: fedf5a2c-f361-49e1-8f18-5589b5baaf11
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Date deposited: 11 Sep 2000
Last modified: 14 Mar 2024 05:25
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Contributors
Author:
S. Chen
Author:
J. Wu
Author:
R.H. Istepanian
Author:
G. Li
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