Volume 27 Issue 7
Jul.  2012
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Article Navigation >  Journal of Aerospace Power  > 2012  >  27(7): 1613-1618
LIU Jian-xun, LI Gang, LV Meng-jun, WEI Xun-kai. Identification method based on support vector machines for turbofan engine steady state control in full flight envelop and various working conditions[J]. Journal of Aerospace Power, 2012, 27(7): 1613-1618.
Citation: LIU Jian-xun, LI Gang, LV Meng-jun, WEI Xun-kai. Identification method based on support vector machines for turbofan engine steady state control in full flight envelop and various working conditions[J]. Journal of Aerospace Power, 2012, 27(7): 1613-1618.
shu

Identification method based on support vector machines for turbofan engine steady state control in full flight envelop and various working conditions

  • 1.

    Aeronautic Mechanical Engineering Department, The First Aeronautical College of Air Force,Xinyang Henan 464000,China

  • 2.

    Research Institute of Aeronautic Equipment, Air Force Equipment Academe,Beijing 100076,China

  • Received Date: 2011-07-19
  • Publish Date: 2012-07-28
    Abstract
  • To accomplish steady state optimal control of turbofan engine in full flight envelop and in different working conditions,nonlinear estimation methods based on linear steady state models of turbofan in all operation points were presented.The principle and algorithm realization of support vector machines for nonlinear controller approximation were improved.Then,the method used the improved support vector machines to establish the identification model of many linear optimization controllers designed for turbofan engine in some representative flight conditions.The controller design results for other operation points in the flight envelope can be conveniently educed by the model.For the identification model,the inputs were the steady rotation speed,the flight altitude and the flight Mach number,and the outputs were the parameters of the synthetic controller.The application examples show that the identification errors of the method in the whole flight envelop and various working conditions can meet the control precision need.

     

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