Nonlinear Adaptive Control of Exhaust Gas Recirculation for Large Diesel Engines

Kræn Vodder Nielsen, Mogens Blanke, Morten Vejlgaard-Laursen

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Abstract

A nonlinear adaptive controller is proposed for the exhaust gas recirculation systemon large two-stroke diesel engines. The control design is based on a control oriented model ofthe nonlinear dynamics at hand that incorporates load and engine speed changes as knowndisturbances to the exhaust gas recirculation. The paper provides proof of exponential stabilityfor closed loop control of the model given. Difficulties in the system include that certaindisturbance levels will make a desired setpoint in O2 unreachable, for reasons of the physics of thesystem, and it is proven that the proposed control will make the system converge exponentiallyto the best achievable state. Simulation examples confirm convergence and good disturbancerejection over relevant operational ranges of the engine.
Original languageEnglish
Book seriesI F A C Workshop Series
Volume48
Issue number16
Pages (from-to)254-260
ISSN1474-6670
DOIs
Publication statusPublished - 2015
Event10th IFAC Conference on Manoeuvring and Control of Marine Craft - DTU, Lyngby, Denmark
Duration: 24 Aug 201526 Aug 2015
Conference number: 10
http://www.mcmc2015.dk/

Conference

Conference10th IFAC Conference on Manoeuvring and Control of Marine Craft
Number10
LocationDTU
Country/TerritoryDenmark
CityLyngby
Period24/08/201526/08/2015
Internet address

Keywords

  • Exhaust gas recirculation
  • diesel engines
  • Nonlinear control
  • Adaptive control
  • Modelling for control
  • Parameter estimation

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