Title: Turbofan aero-engine full flight envelope control using H_∞ loop-shaping control technique

Authors: Haiquan Wang, Dongyun Wang, Mingcong Deng

Addresses: Department of Electronic Information Engineering, Zhongyuan University of Technology, 41 Zhongyuan Road, Zhengzhou, China. ' Department of Electronic Information Engineering, Zhongyuan University of Technology, 41 Zhongyuan Road, Zhengzhou, China. ' Department of Electrical and Electronic Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, Japan

Abstract: A full flight envelope turbofan aero-engine control is developed by H_∞ loop-shaping control concept in this paper. First, H_∞ loop-shaping control concept which is carried out in frequency domain is introduced and used to aero-engine control design. In order to meet the maximum robustness, multi-objective genetic algorithm is proposed creatively to obtain the global optimum loop-shaping weights. Second, considering the finite robustness of H_∞ loop-shaping controller while implementing the task of flight envelope turbofan engine control, the full flight envelope is divided to eight sub-regions and gain-scheduled control system where the sub-region controller could be switched with the change of the engine Mach number and altitude is constructed as the original work. The simulation results show the ability of the proposed control system in tracking the flight command, it is also verified that switching process has only slight effects on the engine condition under the control of the designed flight envelope controller.

Keywords: turbofan aeroengines; full flight envelope control; H-infinity loop shaping; multiobjective optimisation; RTW; engine control; loop shaping control; genetic algorithms; GAs; simulation.

DOI: 10.1504/IJAMECHS.2011.040164

International Journal of Advanced Mechatronic Systems, 2011 Vol.3 No.1, pp.65 - 76

Published online: 18 Mar 2015 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article