Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (1): 130-137.doi: 10.3969/j.issn.1001-506X.2021.01.16

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Parameter estimation method of equipment system based on multi-fidelity surrogate model

Jia LIU(), Kewei YANG(), Jiang JIANG(), Boyuan XIA()   

  1. College of Systems Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2020-03-31 Online:2020-12-25 Published:2020-12-30

Abstract:

System parameter estimation is a key part in the design and development of weapon equipment systems. Aiming at the problems of the increasing system complexity, dynamic changes in demand, fast response, and lack of high-precision datas in the design of complex systems, a parameter estimation method for the equipment systems based on multi-fidelity surrogate model is proposed. Firstly, this method establishes a proxy model for low-fidelity data based on the traditional Kriging model. Then, this model is used as a global trend model for establishing a multi-tidelity proxy mode by inserting high-fidelity data, and a parameter estimation method that meets both the requirements of high accuracy and efficiency is obtained. Finally, the parameter estimation of the maximum lift coefficient in the design of aircraft wing systems is taken as an example to verify the feasibility and effectiveness of the proposed method in equipment design and development, which servased as a decision support for designers.

Key words: complex system, surrogate model, multi-fidelity, Kriging model, parameter estimation

CLC Number: 

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