力學(xué)大會(huì)2015集起重機(jī)結(jié)構(gòu)健康監(jiān)測(cè)系統(tǒng)傳感器性能

,,,,王新廣州特種機(jī)電設(shè)備檢測(cè)廣州能比對(duì)強(qiáng)進(jìn)導(dǎo)應(yīng)論礎(chǔ)3的粘進(jìn)統(tǒng)行：ResearchontheSensingSystem’sPerformanceofCraneStructuralHealthMonitoringSystemHUANGGuojian,LIUJin,CHENMin,PENGQifengWANG(R&DCenterofGZSEI,Guangzhou,：Inordertoselectthemostappropriatesensingsystemofcranestructuralhealthmonitoringsystem(CSHMS),thetestabouttheperformanceofsensingsystemswerecarriedout.Firstly,theprincipleoftheequalstrengthbeamwasresearched,andtheexpressionofstressandloadwasdeduced.Onthebasisoftheoreticalresearch,thethreekindsofsensorsofthreesensingsystemswereattachedtotheequalstrengthbeam,theloadwasapplied,theinstrumentsweremeasured,thecorrespondingstrainvalueswereobtained.Finally,theexperimentalvaluesofA-type,B-type,C-typesensingsystemandthetheoreticalvalueswerecompared,therelativeerrorrateswere:4.64%,9.70%,10.68%,theresultsshowedthattheerrorrateofA-typeopticalfibersensingsystemwastheminimum.A-typeopticalfibersensingsystemwasfinallyusedintheCSHMS.:sensingsystem;healthmonitoring;crane; 作者簡(jiǎn)介： 結(jié)構(gòu)健康監(jiān)測(cè)系統(tǒng)可準(zhǔn)確可靠評(píng)估所監(jiān)測(cè)起重機(jī)的完整性，減少費(fèi)用，增加工作，提高安全度，國(guó)內(nèi)外廣大專(zhuān)家學(xué)者對(duì)此開(kāi)展了廣泛而又深入的研究。DeLaRosa等將譜峭度SpectralKurtosis(SK)方法應(yīng)用在集裝箱龍門(mén)起重機(jī)的監(jiān)測(cè)過(guò)對(duì)集裝箱龍門(mén)起重機(jī)的轉(zhuǎn)子進(jìn)行長(zhǎng)期監(jiān)測(cè)以獲得其正常運(yùn)行的峰值[1]；理工大學(xué)的徐長(zhǎng)生教授建立了針對(duì)岸橋結(jié)構(gòu)的基于改進(jìn)P網(wǎng)絡(luò)神經(jīng)的結(jié)構(gòu)應(yīng)力診斷專(zhuān)家系統(tǒng)設(shè)計(jì)了基于GPS無(wú)線(xiàn)網(wǎng)絡(luò)的光纖光柵結(jié)構(gòu)應(yīng)力監(jiān)系統(tǒng)[2]；沈陽(yáng)建筑大學(xué)的等對(duì)基于無(wú)線(xiàn)傳感器網(wǎng)絡(luò)的塔式起重機(jī)系統(tǒng)展開(kāi)了研究實(shí)現(xiàn)了建筑機(jī)械和無(wú)線(xiàn)通信的良好組合[3]；中國(guó)特檢院的丁克勤等在起重機(jī)械安全健康監(jiān)測(cè)方法上行了較纖光柵傳感技術(shù)引入到起重機(jī)的結(jié)構(gòu)健康監(jiān)測(cè)了起重機(jī)械全生命周期的結(jié)構(gòu)健康監(jiān)測(cè)[45]；廣州特種機(jī)電設(shè)備檢測(cè)在門(mén)座式起重機(jī)的結(jié)構(gòu)健康監(jiān)測(cè)上做了較結(jié)構(gòu)應(yīng)力測(cè)試動(dòng)模態(tài)等方面也積累了一定經(jīng)驗(yàn)[678]。將型光纖光柵傳感系統(tǒng)型靜態(tài)應(yīng)變傳感系統(tǒng)和型無(wú)線(xiàn)傳感系統(tǒng)的變傳感器分別粘貼在等強(qiáng)應(yīng)變傳感器與相應(yīng)傳感系統(tǒng)連接并設(shè)置好；

圖1圖圖2由式(1)可知該截面的抗彎截面系數(shù)W為

btIx btW x6

M

xσ=M6Fx btx

σ=M6Fx 20 2

纖光柵應(yīng)變式傳感器的中心波長(zhǎng)為1530.6nm，其應(yīng)變隨溫度的變化如式(6)所示，去除溫度影響，應(yīng)變的計(jì)算如式(7)所示。 6/F T試驗(yàn)結(jié)載F0載F0 - - - - -次第 次讀數(shù)第讀數(shù)第-- - - -次-- - -- 值，即ε1、ε2和ε3的平均值==

δσ0-AA

100%

εT2.971012.73T17.23102T5.30104T31.40106T4(μm/

試驗(yàn)結(jié)載F0載F0 - 1第 1次 讀

-

- 3第 3次

δσ0-=B=B

100% 的靈敏系數(shù)為2.08±0.1%，溫度自補(bǔ)償系數(shù)為11。試驗(yàn)結(jié)載F0載F0 - - - - -1第 1次 讀

- -

- - - - - -3第 3次

δC

==

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