Two approaches based on pole sensitivity and stability radius measures for finite precision digital controller realizations
Two approaches based on pole sensitivity and stability radius measures for finite precision digital controller realizations
This paper compares the two approaches based on pole sensitivity and the complex stability radius measures, respectively, for optimizing the closed-loop stability robustness of digital controllers with respect to finite word length (FWL) errors in fixed-point implementation. Design details and related optimization procedures are derived for the two methods. The two measures, although derived from different motivations, can both be regarded as lower-bound measures of a true but computationally intractable FWL stability measure in some senses. An example is used to verify the theoretical analysis and to illustrate the two designs for determining optimal FWL controller realizations.
321-329
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Wu, J.
5a0119e5-a760-4ff5-90b9-ec69926ce501
Li, G.
f0f77e84-2dca-4e91-854e-156d36434431
March 2002
Chen, S.
9310a111-f79a-48b8-98c7-383ca93cbb80
Wu, J.
5a0119e5-a760-4ff5-90b9-ec69926ce501
Li, G.
f0f77e84-2dca-4e91-854e-156d36434431
Chen, S., Wu, J. and Li, G.
(2002)
Two approaches based on pole sensitivity and stability radius measures for finite precision digital controller realizations.
Systems & Control Letters, 45 (4), .
Abstract
This paper compares the two approaches based on pole sensitivity and the complex stability radius measures, respectively, for optimizing the closed-loop stability robustness of digital controllers with respect to finite word length (FWL) errors in fixed-point implementation. Design details and related optimization procedures are derived for the two methods. The two measures, although derived from different motivations, can both be regarded as lower-bound measures of a true but computationally intractable FWL stability measure in some senses. An example is used to verify the theoretical analysis and to illustrate the two designs for determining optimal FWL controller realizations.
Text
SCL2002-45-4
- Version of Record
Restricted to Repository staff only
Request a copy
More information
Published date: March 2002
Additional Information:
submitted for publication in August 2000, accepted in Aug. 2001
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 253796
URI: http://eprints.soton.ac.uk/id/eprint/253796
PURE UUID: 44094cad-0ab7-430d-8fbd-6b9458786a6b
Catalogue record
Date deposited: 03 Apr 2002
Last modified: 14 Mar 2024 05:29
Export record
Contributors
Author:
S. Chen
Author:
J. Wu
Author:
G. Li
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics