Change search
ReferencesLink to record
Permanent link

Direct link
Logic-based switching control of nonlinear systems using high-gain observers
Michigan State University.
2005 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

The design of robust output and state feedback controllers for practical track-ing and stabilization for nonlinear systems with large-scale parametric uncertainty is considered. We consider a class of single-input single-output systems that can be transformed into a special form, where unavailable states (if any) are derivatives of the measured outputs. We consider a large class of nonlinear systems that could be stabilized via a Lyapunov-based technique if the level of parametric uncertainty was much lower and if the unmeasured states were available for feedback. We propose and investigate a new approach based on subdividing the set of parameters into smaller subsets, designing candidate controllers for each subset, and implementing a logic-based switching between them. We use the output of an extended-order high-gain observer to substitute the unavailable states in the candidate controllers, check the inequality for the derivative of the Lyapunov function and switch if it is not satisfied, and to approximately identify the parameters. We discuss the issues of digital implementation and measurement noise and illustrate our design procedure on several examples.

Place, publisher, year, edition, pages
Michigan State University , 2005. , 124 p.
URN: urn:nbn:se:umu:diva-37738ISBN: 9780542323102OAI: diva2:369762
Available from: 2010-11-25 Created: 2010-11-11 Last updated: 2010-11-25Bibliographically approved

Open Access in DiVA

No full text

Other links

ProQuest - Dissertations & Theses

Search in DiVA

By author/editor
Freidovich, Leonid

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 53 hits
ReferencesLink to record
Permanent link

Direct link