Alternative Observers for SI Engine Air/Fuel Ratio Control

Elbert Hendricks; Jannik Poulsen; Mads Bruun Olsen; Per Buchbjerg Jensen; Michael Føns; Christian Jepsen

doi:10.1109/CDC.1996.573541

Alternative Observers for SI Engine Air/Fuel Ratio Control

Elbert Hendricks, Jannik Poulsen, Mads Bruun Olsen, Per Buchbjerg Jensen, Michael Føns, Christian Jepsen

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Abstract

In earlier work it has been shown that a nonlinear observer based on the use of the manifold pressure state equation and a nonlinear fuel film compensator can maintain accurate A/F ratio control during both steady state and transient operation. This observer may be called a manifold absolute pressure (MAP) observer because it is fundamentally dependent on the use of the manifold pressure state equation and a MAP sensor. It is in reality a constant gain extended Kalman filter. While this observer shows promise for some applications, it obviously cannot immediately be used with air mass flow sensors other than a MAP sensor. In this paper it is shown that it is possible to construct a family of alternative nonlinear observers which “naturally” allow the use of any given air mass flow related sensor or a combination of them for A/F ratio control. This new family of observers provides the SI engine control system designer with a variety of robust control systems which can easily be made redundant in order to satisfy newer engine emissions and diagnosis requirements and legislation

Original language	English
Title of host publication	Proc. 33rd IEEE Conf. on Decision and Control
Volume	3
Place of Publication	Kobe, Japan
Publisher	IEEE
Publication date	1996
Pages	2806-2811
ISBN (Print)	0-7803-3590-2
DOIs	https://doi.org/10.1109/CDC.1996.573541
Publication status	Published - 1996
Event	35th IEEE Conference on Decision and Control - Kobe, Japan Duration: 11 Dec 1996 → 13 Dec 1996 Conference number: 35 https://ieeexplore.ieee.org/xpl/conhome/4303/proceeding

Conference

Conference	35th IEEE Conference on Decision and Control
Number	35
Country/Territory	Japan
City	Kobe
Period	11/12/1996 → 13/12/1996
Internet address	https://ieeexplore.ieee.org/xpl/conhome/4303/proceeding

Bibliographical note

Copyright: 1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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@inproceedings{4e757c6d0616442596c634715865c4b1,

title = "Alternative Observers for SI Engine Air/Fuel Ratio Control",

abstract = "In earlier work it has been shown that a nonlinear observer based on the use of the manifold pressure state equation and a nonlinear fuel film compensator can maintain accurate A/F ratio control during both steady state and transient operation. This observer may be called a manifold absolute pressure (MAP) observer because it is fundamentally dependent on the use of the manifold pressure state equation and a MAP sensor. It is in reality a constant gain extended Kalman filter. While this observer shows promise for some applications, it obviously cannot immediately be used with air mass flow sensors other than a MAP sensor. In this paper it is shown that it is possible to construct a family of alternative nonlinear observers which “naturally” allow the use of any given air mass flow related sensor or a combination of them for A/F ratio control. This new family of observers provides the SI engine control system designer with a variety of robust control systems which can easily be made redundant in order to satisfy newer engine emissions and diagnosis requirements and legislation",

author = "Elbert Hendricks and Jannik Poulsen and Olsen, {Mads Bruun} and Jensen, {Per Buchbjerg} and Michael F{\o}ns and Christian Jepsen",

note = "Copyright: 1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 35th IEEE Conference on Decision and Control, CDC 1996 ; Conference date: 11-12-1996 Through 13-12-1996",

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AU - Poulsen, Jannik

AU - Olsen, Mads Bruun

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AU - Føns, Michael

AU - Jepsen, Christian

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N2 - In earlier work it has been shown that a nonlinear observer based on the use of the manifold pressure state equation and a nonlinear fuel film compensator can maintain accurate A/F ratio control during both steady state and transient operation. This observer may be called a manifold absolute pressure (MAP) observer because it is fundamentally dependent on the use of the manifold pressure state equation and a MAP sensor. It is in reality a constant gain extended Kalman filter. While this observer shows promise for some applications, it obviously cannot immediately be used with air mass flow sensors other than a MAP sensor. In this paper it is shown that it is possible to construct a family of alternative nonlinear observers which “naturally” allow the use of any given air mass flow related sensor or a combination of them for A/F ratio control. This new family of observers provides the SI engine control system designer with a variety of robust control systems which can easily be made redundant in order to satisfy newer engine emissions and diagnosis requirements and legislation

AB - In earlier work it has been shown that a nonlinear observer based on the use of the manifold pressure state equation and a nonlinear fuel film compensator can maintain accurate A/F ratio control during both steady state and transient operation. This observer may be called a manifold absolute pressure (MAP) observer because it is fundamentally dependent on the use of the manifold pressure state equation and a MAP sensor. It is in reality a constant gain extended Kalman filter. While this observer shows promise for some applications, it obviously cannot immediately be used with air mass flow sensors other than a MAP sensor. In this paper it is shown that it is possible to construct a family of alternative nonlinear observers which “naturally” allow the use of any given air mass flow related sensor or a combination of them for A/F ratio control. This new family of observers provides the SI engine control system designer with a variety of robust control systems which can easily be made redundant in order to satisfy newer engine emissions and diagnosis requirements and legislation

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M3 - Article in proceedings

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BT - Proc. 33rd IEEE Conf. on Decision and Control

PB - IEEE

CY - Kobe, Japan

T2 - 35th IEEE Conference on Decision and Control

Y2 - 11 December 1996 through 13 December 1996

ER -

Alternative Observers for SI Engine Air/Fuel Ratio Control

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