IO linearization, stability, and control of an input non-affine thermoelectric system

Koen Bos, Dennis Heck, Marcel Heertjes, Robert van der Kall

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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3 Downloads (Pure)

Abstract

We consider a novel control architecture for an input non-affine thermoelectric system, which is used to control the temperature of an object subject to unknown thermal disturbances. A key component in this architecture is given by an input-output linearizing feedback controller to deal with the nonlinear dynamics associated with the input. This enables us to use linear control techniques with the associated performance guarantees. Using a Lyapunov-based stability analysis we derive sufficient conditions for asymptotic stability in the nominal operating regime. To prevent instability outside the nominal operating regime, e.g. in the face of large disturbances where stability is inevitably compromised, we propose to saturate the control input by using state-dependent bounds. These bounds automatically trade-off performance and stability, thereby avoiding the need for complicated stability analysis per application, and as such, allowing the designer to focus on performance. The effectiveness of the nonlinear control approach is demonstrated through measurement results.

Original languageEnglish
Title of host publication2018 Annual American Control Conference, ACC 2018
PublisherInstitute of Electrical and Electronics Engineers
Pages526-531
Number of pages6
ISBN (Print)9781538654286
DOIs
Publication statusPublished - 9 Aug 2018
Event2018 American Control Conference (ACC 2018) - Hilton Milwaukee City Center Hotel, Milwaukee, Wisconsin, United States
Duration: 27 Jun 201829 Jun 2018
http://acc2018.a2c2.org/

Conference

Conference2018 American Control Conference (ACC 2018)
Abbreviated titleACC 2018
Country/TerritoryUnited States
CityMilwaukee, Wisconsin
Period27/06/1829/06/18
Internet address

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