Volume 29 Issue 11
Nov.  2014
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ZHAO Lin, WANG Xi, SONG Zhi-ping. Fault tolerance analysis of high-bypass-ratio turbofan engine turbine monitoring temperature[J]. Journal of Aerospace Power, 2014, 29(11): 2780-2784. doi: 10.13224/j.cnki.jasp.2014.11.033
Citation: ZHAO Lin, WANG Xi, SONG Zhi-ping. Fault tolerance analysis of high-bypass-ratio turbofan engine turbine monitoring temperature[J]. Journal of Aerospace Power, 2014, 29(11): 2780-2784. doi: 10.13224/j.cnki.jasp.2014.11.033

Fault tolerance analysis of high-bypass-ratio turbofan engine turbine monitoring temperature

doi: 10.13224/j.cnki.jasp.2014.11.033
  • Received Date: 2013-07-23
  • Publish Date: 2014-11-28
  • A turbine monitoring temperature analytic method was proposed for fault tolerance of high-bypass-ratio engine, so as to prevent engine control from degrading caused by turbine monitoring temperature sensor failure or overtemperature caused by undetected sensor failure. The analytic method includes two parts: one analytic method is based on turbine total exhaust temperature which is a main analytic unit; the other is based on air flow model as a redundant unit, which is used when the main analytic temperature differs a lot from the measurement temperature. An experiment on engine trial data was carried out. The results show that the main analytic unit's steady state error is less than 0.33%. The redundant unit's steady state error is less than 0.8%. Experiment results show these two analytic units are both valid and suitable for engine fault tolerant control.

     

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