發(fā)布時(shí)間：2018-01-13 15:40

  本文關(guān)鍵詞：動態(tài)載荷識別的自適應(yīng)延遲逆模型方法　出處：《船舶力學(xué)》2017年05期 　論文類型：期刊論文

  更多相關(guān)文章： 振動 時(shí)域載荷識別 自適應(yīng)延遲逆模型 時(shí)間延遲

【摘要】：為減小載荷識別問題對原系統(tǒng)先驗(yàn)知識的依賴,采用系統(tǒng)的自適應(yīng)延遲逆模型識別時(shí)域載荷。采用自適應(yīng)算法辨識延遲逆模型,代替了一般識別方法中的系統(tǒng)特性矩陣求逆過程,避免了病態(tài)問題。隨后將工作狀態(tài)下的響應(yīng)作為逆模型的輸入,則其輸出就是時(shí)域載荷的延遲估計(jì)。通過對兩端簡支梁結(jié)構(gòu)進(jìn)行載荷識別的仿真研究,以及對雙層隔振試驗(yàn)臺架的試驗(yàn)研究,識別了穩(wěn)態(tài)激勵(lì)和瞬態(tài)激勵(lì),驗(yàn)證了該方法的有效性。該方法不需要了解系統(tǒng)的數(shù)學(xué)模型及參數(shù),因此能夠應(yīng)用于工程實(shí)踐中。
[Abstract]:In order to reduce the dependence of load identification problem on prior knowledge of the original system, the adaptive delay inverse model of the system is used to identify the time-domain load, and the adaptive algorithm is used to identify the delayed inverse model. Instead of the inverse process of the system characteristic matrix in the general identification method, the ill-conditioned problem is avoided, and then the response in the working state is taken as the input of the inverse model. Then its output is the time-domain load delay estimation. Through the simulation research on the load identification of the simply supported beam structure at both ends, and the experimental research on the double-layer vibration isolation test rig, the steady and transient excitation are identified. The validity of the method is verified. The method does not need to know the mathematical model and parameters of the system, so it can be applied in engineering practice.
【作者單位】： 哈爾濱工程大學(xué)動力與能源工程學(xué)院;中國核動力研究設(shè)計(jì)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(50979016) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(HEUCFZ1115)
【分類號】：O347.1
【正文快照】： 卷積法[1]、SWAT方法[2-3]、卡爾曼濾波器和遞歸最小二乘法[4-5]、逆系統(tǒng)法[6-7]等方法。反卷積法需要對系統(tǒng)的時(shí)域振動特性矩陣進(jìn)行逆運(yùn)算,易出現(xiàn)病態(tài)問題,影響動態(tài)載荷的識別精度。SWAT方法僅適用于具有剛體模態(tài)的結(jié)構(gòu)且所求為動態(tài)載荷的合力,因此其應(yīng)用有很大的局限性�？�，

本文編號：1419507