Application of system identification techniques to aircraft gas turbine engines

A variety of system identification techniques are applied to the modelling of aircraft gas turbine dynamics. The motivation behind the study is to imp rove the efficiency and cost-effectiveness of system identification techniq ues currently used in the industry. Three system identification approaches are outlined in this paper. They are based upon: multisine testing and freq uency-domain identification, time-varying models estimated using extended l east squares with optimal smoothing, and multiobjective genetic programming to select model structure. (C) 2001 Elsevier Science Ltd. All rights reser ved.