Controller Tuning based on Transient Selection and Optimization for a Diesel Engine with EGR and VGT
2008 (English)In: Electronic Engine Controls, SAE World Congress & Exhibition, April, Detroit, MI, USA: SAE Technical paper series SP-2159, 2008-01-0985, SAE International , 2008, 2008-01-0985- p.Conference paper (Refereed)
In modern Diesel engines Exhaust Gas Recirculation (EGR) and Variable Geometry Turbochargers (VGT) have been introduced to meet the new emission requirements. A control structure that coordinates and handles emission limits and low fuel consumption has been developed. This controller has a set of PID controllers with parameters that need to be tuned. To be able to achieve good performance, an optimization based tuning method is developed and tested. In the optimization the control objectives are captured by a cost function. To aid the tuning a systematic method has been developed for selecting representative and significant transients that excite different modes in the controller. The performance is evaluated on the European Transient Cycle. It is demonstrated how weighting factors in the cost function influence control behavior, and that the proposed tuning method gives a significant improvement in control performance compared to standardized tuning methods for PID controllers. Further, the proposed tuning method and the control structure are applied and validated on an engine in a test cell, where it is demonstrated that the control structure achieves all stated control objectives.
Place, publisher, year, edition, pages
SAE International , 2008. 2008-01-0985- p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-18341DOI: 10.4271/2008-01-0985ISBN: 978-0-7680-2001-4OAI: oai:DiVA.org:liu-18341DiVA: diva2:218406
2008 World Congress; Detroit, MI; United States; 14 April 2008 through 17 April 2008