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Volume 34 Issue 05
May  2008
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Journal of Beijing University of Aeronautics and Astronautics  > 2008  >  34(05): 507-511.
Wu Bin, Cheng Peng. Application of General Orthogonal Polynomials on Tracking Problem of Time-varying Systems Optimal Control[J]. Journal of Beijing University of Aeronautics and Astronautics, 1999, 25(4): 414-417. (in Chinese)
Citation: Liu Hongmei, Wang Shaoping, Ouyang Pingchaoet al. Helicopter rotor smoothing based on GRNN neural network and genetic algorithm[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(05): 507-511. (in Chinese)
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Helicopter rotor smoothing based on GRNN neural network and genetic algorithm

  • School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 24 Apr 2007
  • Publish Date: 31 May 2008
    Abstract
  • Considering traditional adjustment method without calculating possible nonlinear between rotor adjustments and fuselage vibration signals, a new rotor adjustment method based on general regression neural network (GRNN) and genetic algorithm was presented. GRNN network was employed to model the relationship between the rotor adjustments and the fuselage vibrations, whose inputs are rotor adjustment parameters and whose outputs are acceleration measurements along the three axes of rotor shaft and the fuselage. With helicopter vibration as objective function, genetic algorithm was used to make a global optimization to find the suitable rotor adjustments corresponding to the minimum vibrations. Flight test results indicate that proposed rotor adjustment method can minimize fuselage vibration at fundamental rotor frequency along the three axes, only in one or two adjustment flights, and that the neural networks may be updated to include new data thus allowing the system to evolve and mature in the course of its use.

     

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