Conference Proceeding

Analysis and control of delay-dependent behavior of engine air-to-fuel ratio

Dept. of Math., Minnesota Univ., Twin Cities, MN
10/2005; DOI:10.1109/CCA.2005.1507298 In proceeding of: Control Applications, 2005. CCA 2005. Proceedings of 2005 IEEE Conference on
Source: IEEE Xplore

ABSTRACT The paper analyzes the influence of the delay on air-to-fuel ratio (A/F) regulation in internal combustion engines. Two feedback controller architectures, an integral controller for the case of a fast A/F sensor and a feedback linearization controller for the case of a slow A/F sensor, are considered. The collocation method is applied to determine the stability and guaranteed rate of convergence regions (charts) in the space of engine and controller parameters and we demonstrate that these charts can be used to automatically schedule A/F feedback controller gains as functions of engine operating conditions. Linear matrix inequality (LMI) techniques are employed for the analysis of disturbance rejection properties of the controllers

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Keywords

collocation method
 
convergence regions
 
disturbance rejection properties
 
fast A/F sensor
 
feedback controller architectures
 
feedback linearization controller
 
functions
 
integral controller
 
internal combustion engines
 
Linear matrix inequality
 
paper analyzes
 
schedule A/F feedback controller gains
 
slow A/F sensor