【摘要】：為提高光電穩(wěn)瞄系統(tǒng)內(nèi)框架結(jié)構(gòu)動(dòng)力學(xué)模型準(zhǔn)確度和仿真分析效率,提出了基于多種群遺傳退火算法的結(jié)構(gòu)動(dòng)力學(xué)模型修正方法。以某光電穩(wěn)瞄系統(tǒng)內(nèi)框架為研究對(duì)象,通過動(dòng)力子結(jié)構(gòu)法建立有限元模型,對(duì)比模態(tài)測(cè)試結(jié)果,采用多種群遺傳退火算法及相關(guān)性分析對(duì)有限元模型進(jìn)行修正,得到全局優(yōu)化下內(nèi)框架軸承的六向剛度值,并對(duì)修正后的模型進(jìn)行了實(shí)驗(yàn)驗(yàn)證。結(jié)果表明,有限元模型與實(shí)驗(yàn)結(jié)果能較好地匹配,各階模態(tài)相關(guān)性在0.8以上,頻率誤差在9.05%以內(nèi),計(jì)算效率提高95%以上。最終形成了高效可行的模型修正方案,為光電穩(wěn)瞄系統(tǒng)內(nèi)框架結(jié)構(gòu)設(shè)計(jì)提供了重要的參考。
[Abstract]:In order to improve the accuracy and efficiency of simulation and analysis of the dynamic model of the frame structure in the photoelectric stabilized and aiming system, a modified method of structural dynamics model based on multi-population genetic annealing algorithm is proposed. The finite element model is established by dynamic substructure method. The finite element model is modified by genetic annealing algorithm of multiple populations and correlation analysis. The six-direction stiffness of the inner frame bearing is obtained under global optimization, and the modified model is verified experimentally. The results show that the finite element model can well match the experimental results, the correlation of each order mode is more than 0.8, the frequency error is less than 9.05%, and the calculation efficiency is improved by more than 95%. Finally, an efficient and feasible model modification scheme is formed, which provides an important reference for the design of the frame structure of the photoelectric stabilized sight system.
【作者單位】： 西安應(yīng)用光學(xué)研究所;
【基金】：國防基礎(chǔ)科研計(jì)劃資助(A0920132001) “十二五”兵器預(yù)研支撐基金項(xiàng)目(62201070139) 高等院校協(xié)同創(chuàng)新合作專項(xiàng)項(xiàng)目(KH201504)
【分類號(hào)】：TJ5;TP18

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1 甘至宏;;光電吊艙內(nèi)框架減振系統(tǒng)設(shè)計(jì)[J];光學(xué)精密工程;2010年09期

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本文編號(hào)：2410495