State feedback based control of air-fuel-ratio using two wide-band oxygen sensors

Ayan Mallik; Aryan

doi:10.1109/ASCC.2015.7244793

State feedback based control of air-fuel-ratio using two wide-band oxygen sensors

Ayan Mallik, Aryan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

This paper proposes an observer-based state feedback control for controlling both the air-fuel-ratio (AFR) and the oxygen level of the three-way catalytic converter (TWC) in port-fuel-injection automotive gasoline engines. The operation of TWCs depends on the combustion mixture's air-fuel ratio as well as the oxygen storage level of the TWC. Accurate control of the air-fuel ratio is therefore required. TWCs can store oxygen from the exhaust gas when the exhaust gas is lean and can use up the stored oxygen when the exhaust gas is rich. Measurements of the air to fuel ratio are taken using oxygen sensors (UEGO) before and after the catalytic stage. The goal of this work is to develop control schemes that use the measurement of both UEGO sensors and thereby aim at improving the AFR control performance. Simulation results demonstrate that the proposed observer-based state feedback control can, in comparison with a PID controller, improve the efficiency of the operation of the TWC by maintaining the oxygen level at 50 % while regulating AFR to the optimized stoichiometric ratio.

Original language	English (US)
Title of host publication	2015 10th Asian Control Conference
Subtitle of host publication	Emerging Control Techniques for a Sustainable World, ASCC 2015
Editors	Hazlina Selamat, Hafiz Rashidi Haruna Ramli, Ahmad Athif Mohd Faudzi, Ribhan Zafira Abdul Rahman, Asnor Juraiza Ishak, Azura Che Soh, Siti Anom Ahmad
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479978625
DOIs	https://doi.org/10.1109/ASCC.2015.7244793
State	Published - Sep 8 2015
Externally published	Yes
Event	10th Asian Control Conference, ASCC 2015 - Kota Kinabalu, Malaysia Duration: May 31 2015 → Jun 3 2015

Publication series

Name	2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015

Conference

Conference	10th Asian Control Conference, ASCC 2015
Country/Territory	Malaysia
City	Kota Kinabalu
Period	5/31/15 → 6/3/15

Keywords

Air-fuel ratio
feed gas
mass air flow
separation principle
state feedback
tailpipe gas
three-way catalytic converter

ASJC Scopus subject areas

Control and Systems Engineering

Access to Document

10.1109/ASCC.2015.7244793

Cite this

Mallik, A., & Aryan (2015). State feedback based control of air-fuel-ratio using two wide-band oxygen sensors. In H. Selamat, H. R. H. Ramli, A. A. M. Faudzi, R. Z. A. Rahman, A. J. Ishak, A. C. Soh, & S. A. Ahmad (Eds.), 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015 Article 7244793 (2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASCC.2015.7244793

State feedback based control of air-fuel-ratio using two wide-band oxygen sensors. / Mallik, Ayan; Aryan.
2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015. ed. / Hazlina Selamat; Hafiz Rashidi Haruna Ramli; Ahmad Athif Mohd Faudzi; Ribhan Zafira Abdul Rahman; Asnor Juraiza Ishak; Azura Che Soh; Siti Anom Ahmad. Institute of Electrical and Electronics Engineers Inc., 2015. 7244793 (2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Mallik, A & Aryan 2015, State feedback based control of air-fuel-ratio using two wide-band oxygen sensors. in H Selamat, HRH Ramli, AAM Faudzi, RZA Rahman, AJ Ishak, AC Soh & SA Ahmad (eds), 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015., 7244793, 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015, Institute of Electrical and Electronics Engineers Inc., 10th Asian Control Conference, ASCC 2015, Kota Kinabalu, Malaysia, 5/31/15. https://doi.org/10.1109/ASCC.2015.7244793

Mallik A, Aryan. State feedback based control of air-fuel-ratio using two wide-band oxygen sensors. In Selamat H, Ramli HRH, Faudzi AAM, Rahman RZA, Ishak AJ, Soh AC, Ahmad SA, editors, 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7244793. (2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015). doi: 10.1109/ASCC.2015.7244793

Mallik, Ayan ; Aryan. / State feedback based control of air-fuel-ratio using two wide-band oxygen sensors. 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015. editor / Hazlina Selamat ; Hafiz Rashidi Haruna Ramli ; Ahmad Athif Mohd Faudzi ; Ribhan Zafira Abdul Rahman ; Asnor Juraiza Ishak ; Azura Che Soh ; Siti Anom Ahmad. Institute of Electrical and Electronics Engineers Inc., 2015. (2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015).

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abstract = "This paper proposes an observer-based state feedback control for controlling both the air-fuel-ratio (AFR) and the oxygen level of the three-way catalytic converter (TWC) in port-fuel-injection automotive gasoline engines. The operation of TWCs depends on the combustion mixture's air-fuel ratio as well as the oxygen storage level of the TWC. Accurate control of the air-fuel ratio is therefore required. TWCs can store oxygen from the exhaust gas when the exhaust gas is lean and can use up the stored oxygen when the exhaust gas is rich. Measurements of the air to fuel ratio are taken using oxygen sensors (UEGO) before and after the catalytic stage. The goal of this work is to develop control schemes that use the measurement of both UEGO sensors and thereby aim at improving the AFR control performance. Simulation results demonstrate that the proposed observer-based state feedback control can, in comparison with a PID controller, improve the efficiency of the operation of the TWC by maintaining the oxygen level at 50 % while regulating AFR to the optimized stoichiometric ratio.",

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AB - This paper proposes an observer-based state feedback control for controlling both the air-fuel-ratio (AFR) and the oxygen level of the three-way catalytic converter (TWC) in port-fuel-injection automotive gasoline engines. The operation of TWCs depends on the combustion mixture's air-fuel ratio as well as the oxygen storage level of the TWC. Accurate control of the air-fuel ratio is therefore required. TWCs can store oxygen from the exhaust gas when the exhaust gas is lean and can use up the stored oxygen when the exhaust gas is rich. Measurements of the air to fuel ratio are taken using oxygen sensors (UEGO) before and after the catalytic stage. The goal of this work is to develop control schemes that use the measurement of both UEGO sensors and thereby aim at improving the AFR control performance. Simulation results demonstrate that the proposed observer-based state feedback control can, in comparison with a PID controller, improve the efficiency of the operation of the TWC by maintaining the oxygen level at 50 % while regulating AFR to the optimized stoichiometric ratio.

KW - Air-fuel ratio

KW - feed gas

KW - mass air flow

KW - separation principle

KW - state feedback

KW - tailpipe gas

KW - three-way catalytic converter

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State feedback based control of air-fuel-ratio using two wide-band oxygen sensors

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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