{"title":"飞机气密系统气体泄漏超声检测技术研究","authors":"Yin Dawei, Lin Jun","doi":"10.2174/1874444301507011863","DOIUrl":null,"url":null,"abstract":"Gas leakage testing of aircraft air-tightness system has always been an important work in the aircraft maintenance. Quantitative testing of gas leakage signal drowned in noise is hardly realized alone by ultrasonic detection instrument. In this paper, theory of ultrasonic and small orifice gas leakage has been employed, and a mathematical model based on ultrasonic testing gas leakage of aircraft air-tightness system has been deduced. Through improved chaos Duffing oscillator equation and improved wavelet threshold denoising algorithm, weak period signal in the strong noise background has been successfully distinguished and denoised. Along with software and hardware assistant discrimination means, ultrasonic testing will be more effective to stop gas leakage of aircraft air-tightness system.","PeriodicalId":153592,"journal":{"name":"The Open Automation and Control Systems Journal","volume":"295 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Research on Ultrasonic Testing Technology of Gas Leakage in AircraftAir-Tightness System\",\"authors\":\"Yin Dawei, Lin Jun\",\"doi\":\"10.2174/1874444301507011863\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Gas leakage testing of aircraft air-tightness system has always been an important work in the aircraft maintenance. Quantitative testing of gas leakage signal drowned in noise is hardly realized alone by ultrasonic detection instrument. In this paper, theory of ultrasonic and small orifice gas leakage has been employed, and a mathematical model based on ultrasonic testing gas leakage of aircraft air-tightness system has been deduced. Through improved chaos Duffing oscillator equation and improved wavelet threshold denoising algorithm, weak period signal in the strong noise background has been successfully distinguished and denoised. Along with software and hardware assistant discrimination means, ultrasonic testing will be more effective to stop gas leakage of aircraft air-tightness system.\",\"PeriodicalId\":153592,\"journal\":{\"name\":\"The Open Automation and Control Systems Journal\",\"volume\":\"295 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-10-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Open Automation and Control Systems Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2174/1874444301507011863\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Open Automation and Control Systems Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2174/1874444301507011863","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Research on Ultrasonic Testing Technology of Gas Leakage in AircraftAir-Tightness System
Gas leakage testing of aircraft air-tightness system has always been an important work in the aircraft maintenance. Quantitative testing of gas leakage signal drowned in noise is hardly realized alone by ultrasonic detection instrument. In this paper, theory of ultrasonic and small orifice gas leakage has been employed, and a mathematical model based on ultrasonic testing gas leakage of aircraft air-tightness system has been deduced. Through improved chaos Duffing oscillator equation and improved wavelet threshold denoising algorithm, weak period signal in the strong noise background has been successfully distinguished and denoised. Along with software and hardware assistant discrimination means, ultrasonic testing will be more effective to stop gas leakage of aircraft air-tightness system.
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