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ZHOU Jing-bo, SUN Tao. Robustness and precision evaluation of the form error of micro-structured surfaces using real coded genetic algorithm[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(4): 479-486.
Citation: ZHOU Jing-bo, SUN Tao. Robustness and precision evaluation of the form error of micro-structured surfaces using real coded genetic algorithm[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(4): 479-486.
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Robustness and precision evaluation of the form error of micro-structured surfaces using real coded genetic algorithm

  • Center of Precision Engineering, Harbin Institute of Technology, Harbin 150001, China

  • Received Date:2011-08-29
    Abstract
  • To obtain the form error of micro-structured surfaces robustly and accurately, a form error evaluation method was developed based on the real coded genetic algorithm (RCGA). The method employed the average squared distance as the matching criterion. The point to surface distance was achieved by use of iterative method and the modeling of RCGA for the surface matching was also presented in detail. Parameter selection for RCGA including the crossover rate and population size was discussed. Evaluation results of series simulated surfaces without form error show that this method can achieve the accuracy of root mean square deviation ( Sq)less than 1 nm and surface profile error ( St)less than 4.nm. Evaluation of the surfaces with different simulated errors illustrates that the proposed method can also robustly obtain the form error with nano-meter precision. The evaluation of actual measured surfaces further indicates that the proposed method is capable of precisely evaluating micro-structured surfaces.
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