Téma:Simplified Fast SCR Reaction Model with Ammonia Observer and MPC Control
Vedoucí:Onřej Šantin
Vypsáno jako:Práce v týmu a její organizace
Popis:Selective catalytic reduction (SCR) for treatment of NOx in the vehicle exhaust gas uses urea to selectively promote chemical reactions that convert NOx to harmless nitrogen molecules and water. Urea is injected into exhaust gas where it is converted to ammonia, which acts as the reducing agent for the NOx conversion on the walls of the SCR catalyst. The walls are covered with catalytic materials to boost the reduction.
The objective is to design and implement a simplified SCR model, ammonia storage observer and a simple feedback controller (ideally MPC). The SCR model will have only one chemical reaction – fast SCR.
Pokyny:- Develop a 1D single channel model, where exhaust gas temperatures, flow velocity, concentrations of NO, NO2 and ammonia are of interest.
- Consider fast SCR reaction only for modeling the NOx reduction
- Create a suitable approximation of chemical reaction rate to improve robustness of numerical simulation
- Design and validate an observer for the model
- Design and validate a linear or nonlinear MPC control for the system. Note that MPC can be replaced by other suitable method
- Prepare detailed technical documentation and final presentation
Literatura:[1] Depcik, C., & Assanis, D. (2005). One-dimensional automotive catalyst modeling. Progress in Energy and Combustion Science, 31(4), 308–369. doi:10.1016/j.pecs.2005.08.001 [2] Hsieh, M., & Wang, J. (2011). NO and NO 2 Concentration Modeling and Observer-Based Estimation Across a Diesel Engine Aftertreatment System. Journal of Dynamic Systems, Measurement, and Control, 133(2), 1–13. doi:10.1115/1.4003380 [3] Watling, T. C., Ravenscroft, M. R., & Avery, G. (2012). Development, validation and application of a model for an SCR catalyst coated diesel particulate filter. Catalysis Today, 188(1), 32–41. doi:10.1016/j.cattod.2012.02.007
Vypsáno dne:25.02.2015
Max. počet studentů:4
Přihlášení studenti:David Vojna, Jakub Tomášek, Jaroslav Tabaček, Jiří Figura