Applied Research on Supervised Learning in the Judgment of Airfoil Transition

Binbin Wei, Yongwei Gao, Dong Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper combines the latest machine learning techniques to develop an effective and reliable supervised learning model for transition judgment. Firstly, the variable-interval time average (VITA) method is used to transform the fluctuating pressure signal into a sequence of states in the Markov state space. Then we describe it using Markov chain model, and obtain its feature vectors. Then the hidden Markov model is used to pre-classify the feature vectors labeled using the traditional RMS criteria. And finally a classification model based on probability density distribution is established. The research shows that the model developed in this paper is effective and reliable and possesses a generalization ability. Compared with the traditional RMS criterion, a reasonable 'transition zone' can be obtained using the developed classification model without comparing the signals at multiple locations.

Original languageEnglish
Title of host publication32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021
PublisherInternational Council of the Aeronautical Sciences
ISBN (Electronic)9783932182914
StatePublished - 2021
Event32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021 - Shanghai, China
Duration: 6 Sep 202110 Sep 2021

Publication series

Name32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021

Conference

Conference32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021
Country/TerritoryChina
CityShanghai
Period6/09/2110/09/21

Keywords

  • Classification model
  • Hidden Markov model
  • Markov chain model
  • Supervised learning
  • Transition judgment

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