Thermocouples are one of the most popular devices for temperature measurement due to their robustness, ease of manufacture and installation, and low cost. However, when used in the harsh environment found in combustion systems and automotive engine exhausts, large wire diameters are required and consequently the measurement bandwidth is reduced. This paper describes two new algorithmic compensation techniques based on blind deconvolution to address this loss of high-frequency signal components using the measurements from two thermocouples. In particular, a continuous-time approach is proposed, combined with a cross-relation blind deconvolution for parameter estimation. A feature of this approach is that no a priori assumption is made about the time constant ratio of the two thermocouples. The advantages, including small estimation variance and limitations of the method, are highlighted using results from simulation and test rig studies.
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March 2007
Technical Papers
Blind Deconvolution for Two-Thermocouple Sensor Characterization
Peter C. Hung,
Peter C. Hung
Virtual Engineering Centre,
Queen’s University Belfast
, Belfast BT9 5HN, Northern Ireland
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Robert J. Kee,
Robert J. Kee
Virtual Engineering Centre,
Queen’s University Belfast
, Belfast BT9 5HN, Northern Ireland
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George W. Irwin,
George W. Irwin
Virtual Engineering Centre,
Queen’s University Belfast
, Belfast BT9 5HN, Northern Ireland
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Seán F. McLoone
Seán F. McLoone
Department of Electronic Engineering,
e-mail: s.mcloone@ieee.org
National University of Ireland, Maynooth
, Maynooth, Co. Kildare, Ireland
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Peter C. Hung
Virtual Engineering Centre,
Queen’s University Belfast
, Belfast BT9 5HN, Northern Ireland
Robert J. Kee
Virtual Engineering Centre,
Queen’s University Belfast
, Belfast BT9 5HN, Northern Ireland
George W. Irwin
Virtual Engineering Centre,
Queen’s University Belfast
, Belfast BT9 5HN, Northern Ireland
Seán F. McLoone
Department of Electronic Engineering,
National University of Ireland, Maynooth
, Maynooth, Co. Kildare, Irelande-mail: s.mcloone@ieee.org
J. Dyn. Sys., Meas., Control. Mar 2007, 129(2): 194-202 (9 pages)
Published Online: June 10, 2006
Article history
Received:
January 5, 2006
Revised:
June 10, 2006
Citation
Hung, P. C., Kee, R. J., Irwin, G. W., and McLoone, S. F. (June 10, 2006). "Blind Deconvolution for Two-Thermocouple Sensor Characterization." ASME. J. Dyn. Sys., Meas., Control. March 2007; 129(2): 194–202. https://doi.org/10.1115/1.2431814
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