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TECHNICAL BRIEFS

Sliding Mode Fuel-Injection Controller: Its Advantages

[+] Author and Article Information
Dan Cho

Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544

J. Karl Hedrick

Department of Mechanical Engineering, University of California, Berkeley, CA 94720

J. Dyn. Sys., Meas., Control 113(3), 537-541 (Sep 01, 1991) (5 pages) doi:10.1115/1.2896447 History: Received April 25, 1988; Revised June 01, 1990; Online March 17, 2008

Abstract

New and improved results are presented on the advantages of employing the sliding mode control method for designing a closed-loop fuel-injection system. The two biggest advantages of this method are: (1) its compatibility with the current oxygen sensor technology and (2) its ability to consider robustness and performance issues analytically for an automotive engine, whose operating characteristics are highly complex and nonlinear. The controller can achieve the stoichiometric ratio control of air and fuel with excellent transient properties and is robust to model errors and disturbances. Furthermore, through direct comparisons to PI-controllers, it is shown that the sliding mode fuel-injection controller is versatile and requires very little tuning time. Performance evaluations are performed both on an engine-only model and on a comprehensive powertrain model that includes automatic transmission and drivetrain dynamics.

Copyright © 1991 by The American Society of Mechanical Engineers
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