Title: Closed-loop identification using Laguerre orthogonal functions for a virtual diesel engine

Authors: Pingkang Li, Guojun Shi

Addresses: School of Mechanical Engineering, Beijing Jiaotong University, 100044, Beijing, China. ' Eontronix Co. Ltd., 100085, Beijing, China

Abstract: This paper provides a paradigm consisting of a closed-loop system identification algorithm in terms of Laguerre orthogonal functions to handle variable transport time delay system. The identification algorithm does not require any special excitation signal. Two-closed-loop transfer functions (time domain and frequency domain) from the set point signal to the control input and output are identified using Laguerre orthogonal functions. A plant model is then computed based on the two-closed-loop transfer functions. We perform the entire design and simulation on a virtual diesel engine developed by Cummins Engine Company.

Keywords: variable transport time delay; Laguerre orthogonal functions; closed-loop identification; virtual diesel engines; engine simulation; engine dynamics; PID control; system identification; engine modelling.

DOI: 10.1504/IJCAT.2011.042229

International Journal of Computer Applications in Technology, 2011 Vol.41 No.1/2, pp.34 - 39

Published online: 01 Sep 2011 *

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