Engineering Commons^™

Zmiany W Metodyce Modelowania Rozprzestrzeniania Się Zanieczyszczeń W Powietrzu Opartej Na Modelu Gaussa, Robert Oleniacz, Marek Bogacki

Robert Oleniacz

The paper presents the changes that have occurred in December 2002 in the Polish reference modeling methodology (based on the stationary Gaussian atmospheric dispersion model) used for the air quality impact assessment in Poland since the 60s of the 20th century. Discusses the changes that have occurred in the preparation of data for the simulation, the procedure used in shortened and full range of calculation, the algorithms of initial computations and the results of calculations.

English Title: Changes in the methodology of modeling the pollutant dispersion in the air based on the Gaussian model.

Neuro Emission Controller For Minimizing Cyclic Dispersion In Spark Ignition Engines, Pingan He, Jagannathan Sarangapani

Electrical and Computer Engineering Faculty Research & Creative Works

A novel neural network (NN) controller is developed to control spark ignition (SI) engines at extreme lean conditions. The purpose of neurocontroller is to reduce the cyclic dispersion at lean operation even when the engine dynamics are unknown. The stability analysis of the closed-loop control system is given and the boundedness of all signals is ensured. Results demonstrate that the cyclic dispersion is reduced significantly using the proposed controller. The neuro controller can also be extended to minimize engine emissions with high EGR levels, where similar complex cyclic dynamics are observed. Further, the proposed approach can be applied to control …