A Lambda Control Observer With Fault Correction

Christian Vigild; Michael Struwe; Per Buchbjerg Jensen; Mads Bruun Olsen; Elbert Hendricks

A Lambda Control Observer With Fault Correction

Christian Vigild, Michael Struwe, Per Buchbjerg Jensen, Mads Bruun Olsen, Elbert Hendricks

Technical University of Denmark

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

At the present, a long term stoichiometric Air/Fuel Ratio (AFR) control of the an SI engine is maintained by using a switching HEGO sensor and gain scheduled, high gain, PI controller. Because of its inexpensive and primitive design and the engine time delay, this loop has a very low effective bandwidth. It seldom exceeds 2 Hz. This is altogether too small for accurate transient air/fuel ratio control. This paper presents a new lambda (normalized air/fuel ratio) control methodology based on a time delay observer. This technique makes possible a significant increase of the lambda control bandwidth while at the same time incoporating an integration term so that stationary AFR errors are reduced to zero.

Original language	English
Title of host publication	Proc. IFAC Workshop: Advances in Automotive Control
Place of Publication	Loudonville OH USA
Publisher	International Federation of Automatic Control
Publication date	1998
Publication status	Published - 1998
Event	2nd IFAC Workshop on Advances in Automative Control 1998 - Loudonville, United States Duration: 26 Feb 1998 → 1 Mar 1998 Conference number: 2 https://www.sciencedirect.com/journal/ifac-proceedings-volumes/vol/31/issue/1

Workshop

Workshop	2nd IFAC Workshop on Advances in Automative Control 1998
Number	2
Country/Territory	United States
City	Loudonville
Period	26/02/1998 → 01/03/1998
Internet address	https://www.sciencedirect.com/journal/ifac-proceedings-volumes/vol/31/issue/1

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Cite this

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title = "A Lambda Control Observer With Fault Correction",

abstract = "At the present, a long term stoichiometric Air/Fuel Ratio (AFR) control of the an SI engine is maintained by using a switching HEGO sensor and gain scheduled, high gain, PI controller. Because of its inexpensive and primitive design and the engine time delay, this loop has a very low effective bandwidth. It seldom exceeds 2 Hz. This is altogether too small for accurate transient air/fuel ratio control. This paper presents a new lambda (normalized air/fuel ratio) control methodology based on a time delay observer. This technique makes possible a significant increase of the lambda control bandwidth while at the same time incoporating an integration term so that stationary AFR errors are reduced to zero.",

author = "Christian Vigild and Michael Struwe and Jensen, \{Per Buchbjerg\} and Olsen, \{Mads Bruun\} and Elbert Hendricks",

year = "1998",

language = "English",

booktitle = "Proc. IFAC Workshop: Advances in Automotive Control",

publisher = "International Federation of Automatic Control",

note = "2nd IFAC Workshop on Advances in Automative Control 1998 ; Conference date: 26-02-1998 Through 01-03-1998",

url = "https://www.sciencedirect.com/journal/ifac-proceedings-volumes/vol/31/issue/1",

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TY - GEN

T1 - A Lambda Control Observer With Fault Correction

AU - Vigild, Christian

AU - Struwe, Michael

AU - Jensen, Per Buchbjerg

AU - Olsen, Mads Bruun

AU - Hendricks, Elbert

N1 - Conference code: 2

PY - 1998

Y1 - 1998

N2 - At the present, a long term stoichiometric Air/Fuel Ratio (AFR) control of the an SI engine is maintained by using a switching HEGO sensor and gain scheduled, high gain, PI controller. Because of its inexpensive and primitive design and the engine time delay, this loop has a very low effective bandwidth. It seldom exceeds 2 Hz. This is altogether too small for accurate transient air/fuel ratio control. This paper presents a new lambda (normalized air/fuel ratio) control methodology based on a time delay observer. This technique makes possible a significant increase of the lambda control bandwidth while at the same time incoporating an integration term so that stationary AFR errors are reduced to zero.

AB - At the present, a long term stoichiometric Air/Fuel Ratio (AFR) control of the an SI engine is maintained by using a switching HEGO sensor and gain scheduled, high gain, PI controller. Because of its inexpensive and primitive design and the engine time delay, this loop has a very low effective bandwidth. It seldom exceeds 2 Hz. This is altogether too small for accurate transient air/fuel ratio control. This paper presents a new lambda (normalized air/fuel ratio) control methodology based on a time delay observer. This technique makes possible a significant increase of the lambda control bandwidth while at the same time incoporating an integration term so that stationary AFR errors are reduced to zero.

M3 - Article in proceedings

BT - Proc. IFAC Workshop: Advances in Automotive Control

PB - International Federation of Automatic Control

CY - Loudonville OH USA

T2 - 2nd IFAC Workshop on Advances in Automative Control 1998

Y2 - 26 February 1998 through 1 March 1998

ER -