| Citation: | PAN Muxuan, CAO Liangjin, HUANG Jinquanet al. Gain scheduling based decentralized robust control for aircraft engines[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(9): 1964-1973. doi: 10.13700/j.bh.1001-5965.2017.0659(in Chinese)
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Considering the aircraft engine full envelope tracking control under the nonlinear variation dynamic feature within wide range, the decentralized robust tracking controller is proposed. In order to ensure system stability and at the same time make the convergent rates of tracking errors adjustable, the dynamic response exponential convergent parameter is introduced. A set of operating points in the full envelope are chosen, and the aircraft engine power level is denoted by power lever angle (PLA). For every 5°, a PLA is chosen as a design power level. A design step process is described by a process in which the aircraft engine transfers from initial design power level to another design power level. Considering every design step process, a decentralized robust tracking controller was designed based on "stepping method". The parameters of decentralized robust tracking controller in off-design step process were scheduled by linear interpolation. A simulation was conducted on component-level model of a certain type of turbofan engine. The results validate the effectiveness of the control method.
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