0
TECHNICAL PAPERS

Turbofan Performance Deterioration Tracking Using Nonlinear Models and Optimization Techniques

[+] Author and Article Information
K. Mathioudakis, Ph. Kamboukos, A. Stamatis

Laboratory of Thermal Turbomachines, National Technical University of Athens, Athens 15710, Greece

J. Turbomach 124(4), 580-587 (Nov 07, 2002) (8 pages) doi:10.1115/1.1512678 History: Received November 11, 2001; Online November 07, 2002
Copyright © 2003 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
(a) Generation of measured quantities by a model, (b) example set of measurements and parameters on a civil turbofan
Grahic Jump Location
Time evolution of p3 and Δp3 on a deteriorating engine
Grahic Jump Location
Time evolution of ΔT6 and best fit line for smoothing
Grahic Jump Location
Procedure for health parameters determination
Grahic Jump Location
Actual and estimated health parameters evolution in a deteriorating engine (—actual, ○ estimated)
Grahic Jump Location
Comparison of actual and estimated health parameters at the end of the period analyzed
Grahic Jump Location
Estimated health parameter deviations, for data produced from unit disturbances on every individual parameter
Grahic Jump Location
Estimated parameter deviations, for measurements produced by disturbing all health parameters by 1%
Grahic Jump Location
Deterioration estimation based on different numbers of data points (different instants along the engine life)
Grahic Jump Location
LPT deterioration estimation by using (a) 7 measurements, (b) 9 measurements. (—actual, ○ estimated)
Grahic Jump Location
Solution of minimizing Eq. (12), for different values of C; (— line for given ΔP3. [[dashed_line]] locus of solutions. • actual fault)
Grahic Jump Location
Estimated solutions for ΔSW41,ΔSE41 when XNHP is given; (• actual solution)
Grahic Jump Location
Loci of solutions for different proportions of standard derivations; given ΔP3. (• actual solution)
Grahic Jump Location
Loci of solutions for different initial values of health parameters (▪); given XNHP; (• actual solution)
Grahic Jump Location
Comparison of solutions by linear and the nonlinear algorithm (— linear, — nonlinear)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In