Gain-scheduled model-based feedback control of the air/fuel ratio in diesel engines

被引：32

作者：

Alfieri, Ezio ^{[1
]}

Amstutz, Alois ^{[1
]}

Guzzella, Lino ^{[1
]}

机构：

[1] ETH, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland

来源：

CONTROL ENGINEERING PRACTICE | 2009年 / 17卷 / 12期

关键词：

Diesel engines; Air/fuel ratio control; Model-based control; Gain scheduling; H-INFINITY CONTROL;

D O I：

10.1016/j.conengprac.2008.12.008

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper investigates the adoption of an innovative closed-loop control of the air/fuel ratio (AFR) in modern diesel engines. The in-cylinder AFR is in fact a critical quantity responsible for the formation of NOx and particulate matter emission. Two approaches are investigated for the design of a gain-scheduled AFR controller, that are based on the internal model control structure and on the H-infinity design method. in addition, two feedforward controllers are investigated for improving the tracking quality of the system. In terms of tracking performance and driveability, the proposed AFR controllers at least match the series production EGR controller. However, due to the fact that an AFR controller uses information obtained after the combustion process, it can also deal with the drift of sensors and actuators involved in the control loop. (C) 2008 Published by Elsevier Ltd.

引用

页码：1417 / 1425

页数：9

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