Modeling, design and implementation of discrete sliding mode control for an engine idle speed control system

Author

Lu, Manxue ; Loh, Robert N K

Author_Institution

Dept. of Electr. & Syst. Eng., Oakland Univ., Rochester, MI, USA

Volume

3

fYear

2002

fDate

2002

Firstpage

1984

Abstract

A nonlinear model for the idle speed control (ISC) system of a 4-cylinder, 2.4-litre DaimlerChrysler car engine has been developed in this paper based on analytical methods and actual operational data. Through nonlinear state transformation and local linearization, the system model is then changed into a suitable form for which different control techniques and schemes can be applied. A discrete sliding mode (DSM) controller has been designed based on a reachability condition proposed in this paper. The resulting DSM control system was implemented into the DaimlerChrysler engine. The experimental results show that DSM control system has superior performance characteristics on tracking the desired idle speed and rejecting the system disturbances when compared with the existing controller.

Keywords

automobiles; control system synthesis; discrete systems; internal combustion engines; linearisation techniques; nonlinear control systems; reachability analysis; variable structure systems; 4-cylinder 2.4-litre DaimlerChrysler car engine; DSM control; ISC system; discrete sliding mode control design; discrete sliding mode control implementation; discrete sliding mode control modeling; discrete sliding mode controller; disturbance rejection; engine idle speed control system; local linearization; nonlinear model; nonlinear state transformation; operational data; reachability condition; Control systems; Data engineering; Engines; Manifolds; Motion control; Nonlinear control systems; Sampling methods; Sliding mode control; Systems engineering and theory; Velocity control;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2002. Proceedings of the 2002

ISSN

0743-1619

Print_ISBN

0-7803-7298-0

Type

conf

DOI

10.1109/ACC.2002.1023926

Filename

1023926