Application of describing function technique to idle speed control

Amir Nassirharand*, Sze Hong Teh

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review


This paper aims at providing a simple solution to the idle speed control problem. The controller design method is systematic. The method is based on obtaining a describing function model of the I.C. engine followed by designing a classical controller via an algebraic approach. The application of the controller design method to an uncertain automobile engine with time-delay revealed satisfactory results. The performance of the controller is compared with one other procedure previously reported in the open literature. Stability is demonstrated by successful generation of describing function models of the final nonlinear closed-loop system.

Original languageEnglish
Title of host publicationProceedings of the 2010 American Control Conference, ACC 2010
PublisherIEEE Computer Society
Number of pages6
ISBN (Print)9781424474264
Publication statusPublished - 29 Jul 2010
Externally publishedYes
Event2010 American Control Conference - Baltimore, United States
Duration: 30 Jun 20102 Jul 2010

Publication series

NameProceedings of the 2010 American Control Conference, ACC 2010


Conference2010 American Control Conference
Country/TerritoryUnited States


  • Algebraic design
  • Engine control
  • Ford V8 engine
  • Multivariable control
  • Optimization
  • Time delay systems

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