Towards Robust H-infinity Control of an SI Engine's Air/Fuel Ratio Technical University of Denmark

Format:

Conference/Event

Author/Creator:

Vigild, Christian Winge, author.

Conference Name:

International Congress & Exposition (1999-03-01 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Long term stoichiometric Air/Fuel Ratio (AFR) control of an SI engine is at the present mainly maintained by table mapping of the engine's fresh air intake as a function of the engine operating point. In order to reduce a stationary error in the AFR to zero the table based control normally works in conjunction with a PI feedback from a HEGO sensor. The effective bandwidth of this feedback loop is quite small and seldom exceeds 2 Hz. This is altogether too small for accurate transient AFR control.This paper presents a new λ (normalized Air/Fuel Ratio) control methodology (H control) which has a somewhat larger bandwidth and can guarantee robustness with respect to selected engine variable and parameter variations

Notes:

Vendor supplied data

Publisher Number:

1999-01-0854

Access Restriction:

Restricted for use by site license