飞机设计
飛機設計
비궤설계
AIRCRAFT DESIGN
2011年
5期
36-39,63
,共5页
飞机%襟翼%机构%神经网络%失效判据
飛機%襟翼%機構%神經網絡%失效判據
비궤%금익%궤구%신경망락%실효판거
aircraft%flap%mechanism%neural networks%failure criterion
飞机襟翼使用过程中存在失效判据不易确定的问题,目前襟翼机构滑轨滑轮磨损间隙许用量主要是通过试验及使用统计数据分析确定。针对新研机构缺乏试验及使用数据的问题,通过对影响磨损间隙最大许用量的因素分析,提出应用神经网络学习确定襟翼滑轨滑轮间隙最大许用量的预测方法。算例验证表明,运用神经网络方法预测得到的滑轨滑轮架的间隙最大许用量误差小于10%,说明方法有效。该方法对当前新研机构的失效判据确定具有重要的工程意义。
飛機襟翼使用過程中存在失效判據不易確定的問題,目前襟翼機構滑軌滑輪磨損間隙許用量主要是通過試驗及使用統計數據分析確定。針對新研機構缺乏試驗及使用數據的問題,通過對影響磨損間隙最大許用量的因素分析,提齣應用神經網絡學習確定襟翼滑軌滑輪間隙最大許用量的預測方法。算例驗證錶明,運用神經網絡方法預測得到的滑軌滑輪架的間隙最大許用量誤差小于10%,說明方法有效。該方法對噹前新研機構的失效判據確定具有重要的工程意義。
비궤금익사용과정중존재실효판거불역학정적문제,목전금익궤구활궤활륜마손간극허용량주요시통과시험급사용통계수거분석학정。침대신연궤구결핍시험급사용수거적문제,통과대영향마손간극최대허용량적인소분석,제출응용신경망락학습학정금익활궤활륜간극최대허용량적예측방법。산례험증표명,운용신경망락방법예측득도적활궤활륜가적간극최대허용량오차소우10%,설명방법유효。해방법대당전신연궤구적실효판거학정구유중요적공정의의。
In the operational process of the aircraft flap it is not easy to determine the failure criterion. The largest clearance wear loss allowed, that is, the clearance threshold determination is difficult but according to the experimental and statistical data. The new mechanism has no statistical data and the experimental data is a little. Through the analysis of influencing factors to the largest clearance wear loss allowed, the Neural Networks (NN) learning algorithm was proposed. And the examples authentication's results showed that the prediction error of the maximum allowable amount of the gap between the slide and the pulley's shelf is less thanl0%, the method was feasible and accurate for the prediction of wear loss threshold. The method to threshold determinations has actual significance to new mechanisms.