Frequency based nonlinear controller design for regulating systems subjected to time domain constraints

John W. Glass, Matthew A. Franchek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Presented is a nonlinear controller design methodology for a class of regulating systems subjected to quantitative time domain constraints. The output performance specification is an allowable time domain tolerance and the system experiences actuator saturation. The controller design is executed in the frequency domain and is applicable when the frequency response of a linear design cannot satisfy the gain and phase characteristics required by quantitative time domain specifications. A describing function (DF) approach, automated by the Volterra Series, facilitates the nonlinear controller design. The resulting gain and phase distortions associated with the DF of the dynamic nonlinear element are used to achieve the desirable open loop gain and phase characteristics identified by the time domain constraints. The design methodology is illustrated on the idle speed control of a Ford 4.6 L V-8 fuel injected engine. The engine input is the by-pass air valve and the regulated output is engine speed. The power steering pump generates the nonmeasureable external torque load.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Dynamic Systems and Control Division (Publication) DSC
EditorsR.J. Furness
Place of PublicationFairfield, NJ, United States
PublisherASME
Pages531-538
Number of pages8
Volume64
StatePublished - Dec 1 1998
EventProceedings of the 1998 ASME International Mechanical Engineering Congress and Exposition - Anaheim, CA, USA
Duration: Nov 15 1998Nov 20 1998

Other

OtherProceedings of the 1998 ASME International Mechanical Engineering Congress and Exposition
CityAnaheim, CA, USA
Period11/15/9811/20/98

ASJC Scopus subject areas

  • Software
  • Mechanical Engineering

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