Material testing is an essential element in the technological development of airplane turbines. The blades are subject to very high stresses, both thermal and mechanical. To assess material suitability, thermo-mechanical test benches are used where a typical thermo-mechanical load is applied to the test rigs. The sensitivity of the fatigue assessment is very high which requires a very high control precision over a large temperature range and a fast adaptation to different setups. This paper discusses two approaches where the first is a self tuning inverse control loop. The second approach is a data based control method where identification routines are used to dynamically compute the approximated system inverse and use this information to automatically tune the control system for saw-tooth profiles. It is shown that a simple two-zone thermal model describes the behavior of the probe and is then used to derive the inverse model and a control strategy. Finally experimental results of a typical test cycle are presented.
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ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems
July 17–22, 2005
San Francisco, California, USA
Conference Sponsors:
- Heat Transfer Division and Electronic and Photonic Packaging Division
ISBN:
0-7918-4734-9
PROCEEDINGS PAPER
Adaptive High Precision Temperature Control of a Thermo-Mechanical Test Bench for Turbine Blades
Michael Naderhirn,
Michael Naderhirn
Johannes Kepler University of Linz, Linz, Austria
Search for other works by this author on:
Luigi del Re
Luigi del Re
Johannes Kepler University of Linz, Linz, Austria
Search for other works by this author on:
Michael Naderhirn
Johannes Kepler University of Linz, Linz, Austria
Luigi del Re
Johannes Kepler University of Linz, Linz, Austria
Paper No:
HT2005-72492, pp. 127-133; 7 pages
Published Online:
March 9, 2009
Citation
Naderhirn, M, & del Re, L. "Adaptive High Precision Temperature Control of a Thermo-Mechanical Test Bench for Turbine Blades." Proceedings of the ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. Heat Transfer: Volume 4. San Francisco, California, USA. July 17–22, 2005. pp. 127-133. ASME. https://doi.org/10.1115/HT2005-72492
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