Volume 29 Issue 12
Dec.  2014
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KONG Xiang-xing, WANG Xi, ZHANG Shao-ji, YIN Chang-zhi, WANG Xiang-yu. Research and experiment on improved sectional combination control scheme for civil turbofan engine's startup process[J]. Journal of Aerospace Power, 2014, 29(12): 2924-2929. doi: 10.13224/j.cnki.jasp.2014.12.019
Citation: KONG Xiang-xing, WANG Xi, ZHANG Shao-ji, YIN Chang-zhi, WANG Xiang-yu. Research and experiment on improved sectional combination control scheme for civil turbofan engine's startup process[J]. Journal of Aerospace Power, 2014, 29(12): 2924-2929. doi: 10.13224/j.cnki.jasp.2014.12.019

Research and experiment on improved sectional combination control scheme for civil turbofan engine's startup process

doi: 10.13224/j.cnki.jasp.2014.12.019
  • Received Date: 2013-07-29
  • Publish Date: 2014-12-28
  • A n-dot closed loop control algorithm was applied to the startup process for a civil turbofan engine. Therefore, an openned/closed loop sectional combination control scheme for turbofan engine's starup process was designed. The simulation result shows that the n-dot closed loop control algorithm could cause oscillation at the beginning of startup process of turbofan engine. To eliminate the parameters' oscillation at the beginning of startup process, the n-dot closed loop control algorithm was improved according to the rationale of surge recovery by using fuel air ratio unit as the control variable. The experiment results illustrate that the improved sectional combination control scheme could effectively restraine the parameters' oscillation, and furthermore the startup transition process had satisfying stability and repetitive. The numerical difference of high pressure rotor speed under different atmosphere conditions does not exceed 1.0% and the time delay does not exceed 0.9s; meanwhile the numerical difference of high pressure rotor speed under different flight conditions does not exceed 1.0% and the time delay does not exceed 1.2s.

     

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