Volume 5 Issue 3
Jun.  2012
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YE Wei-nan, DONG Ji-hong. Optimized design of lightweight structural parameters for large-aperture primary mirror[J]. Chinese Optics, 2012, 5(3): 222-228. doi: 10.3788/CO.20120503.0222
Citation: YE Wei-nan, DONG Ji-hong. Optimized design of lightweight structural parameters for large-aperture primary mirror[J]. Chinese Optics, 2012, 5(3): 222-228. doi: 10.3788/CO.20120503.0222

Optimized design of lightweight structural parameters for large-aperture primary mirror

doi: 10.3788/CO.20120503.0222
  • Received Date: 21 Feb 2012
  • Rev Recd Date: 23 Mar 2012
  • Publish Date: 10 Jun 2012
  • As for the lightweight structure of a large-aperture primary mirror in remote sensors, this paper introduces an optimized multi-target Genetic Algorithm(GA) based on the Kriging approximate model to design all lightweight structure paramaters for a 2 m-aperture SiC primary mirror. The latin hypercube method is used to build the Kriging model and do the experimental design of optimized parameters, and then a optimal solution is obtained through the multi-target GA(NSGA II). After the optimization, the 2 m-aperture SiC primary mirror weights 243 kg, the surface accuracy reaches 25.7 nm PV, 4.7 nm RMS and the total lightweight rate is 84%. The experimental result proves the feasibility of this optimization method and it can be a reference for the future lightweight optimization design of the structural parameters of large-aperture primiary mirrors.

     

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