| CHEN Zhi-ying,LI Jian-fu, ZHOU Ping, LIU Yong.Robust Optimization for Straight-through Labyrinth Seal Radial Deformation of Aeroengine[J].航空发动机,2018,44(1):1-6 |
| Robust Optimization for Straight-through Labyrinth Seal Radial Deformation of Aeroengine |
| DOI： |
| Key Words:straight-through labyrinth seal radial deformation LS-SVM robust probability of quantile interval |
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| Abstract:In order to reduce the influence of parameter uncertainty on the radial deformation of straight-through labyrinth seal of
aeroengine, a robust optimization method was proposed based on Least Squares Support Vector Machine 渊LS-SVM冤and probabilistic
quantile interval model. The LS-SVM was used to establish the response surface approximation model between parameters and labyrinth
seal radial deformation. Considering the diversity of uncertainty distribution types of parameters, the probabilistic quantile interval method
was adopted to establish robust optimization model. The method was used to optimize the radial deformation of labyrinth seal. The results
show that the probabilistic quantile interval of radial deformation on labyrinth seal is reduced by 6%compared with that before optimization.
The effectiveness of the method is also verified by the results of parameter sensitivity analysis |
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