Blind Deconvolution for Two-thermocouple Sensor Characterisation

P. Hung, Robert Kee, George Irwin, Seán McLoone

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)194-202
Number of pages9
JournalJournal of Dynamic Systems Measurement and Control
Volume129 (2)
Issue number2
DOIs
Publication statusPublished - Mar 2007

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Instrumentation

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