Volume 30 Issue 4
Apr.  2015
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WANG Yuan, LI Qiu-hong, HUANG Xiang-hua, WU Qian. LQ/H∞ controller design for aero-engine based on improved NSGAⅡ[J]. Journal of Aerospace Power, 2015, 30(4): 985-991. doi: 10.13224/j.cnki.jasp.2015.04.027
Citation: WANG Yuan, LI Qiu-hong, HUANG Xiang-hua, WU Qian. LQ/H controller design for aero-engine based on improved NSGAⅡ[J]. Journal of Aerospace Power, 2015, 30(4): 985-991. doi: 10.13224/j.cnki.jasp.2015.04.027

LQ/H controller design for aero-engine based on improved NSGAⅡ

doi: 10.13224/j.cnki.jasp.2015.04.027
  • Received Date: 2013-11-15
  • Publish Date: 2015-04-28
  • The non-dominated sorting genetic algorithm Ⅱ (NSGAⅡ) was improved, and the traditional genetic operation was replaced by differential evolution (DE) algorithm with the non-dominated order as evolution direction. The convergence speed of the algorithm was faster. In order to solve the conservativeness of linear quadratic regulator (LQR) control and H2/H control which had caused wide public concern recently in the field of aero-engine multi-variable control, the LQ/H controller of aero-engine was designed by combining three performance indexes: time domain index, quadratic index and H index and improving the weight matrixes Q, R of NSGAⅡoptimization. Compared with other controller design methods, the LQ/H controller based on multi-objective optimization has clearer control objective, stronger robustness and less conservativeness. The simulation results show that, compared with the H2/H controller based on linear matrix inequation (LMI), the LQ/H controller based on multi-objective optimization can increase performance four times in time-domain and anti-interference ability by 15%, and decrease the regulating time by 50%.

     

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