本文選題：船體變形 + 光纖陀螺�。� 參考：《哈爾濱工程大學(xué)學(xué)報》2017年02期

【摘要】：船體變形的精確測量對于優(yōu)化大型船體結(jié)構(gòu)設(shè)計、不同部位的剛度設(shè)計以及提高艦船傳遞對準(zhǔn)精度都有很現(xiàn)實的意義,而基于慣性傳感器的角速率匹配法是測量船體變形的研究熱點。針對大型船體中慣性測量單元存在大安裝誤差角的情況,建立非線性的船體變形模型以及光纖陀螺的漂移模型,采用CKF濾波方法進行估計;理論推導(dǎo)了UKF與CKF兩種非線性濾波的估計精度,并進行了理論比較分析與仿真驗證。結(jié)果表明隨著航向安裝誤差角從30°增加到50°,靜態(tài)誤差角和動態(tài)誤差角的估計精度始終保持在20″以內(nèi)。與UKF相比,隨著系統(tǒng)非線性程度的增強,CKF的性能優(yōu)勢更加明顯。
[Abstract]:The accurate measurement of ship deformation has practical significance for optimizing the design of large hull structure, designing the stiffness of different parts and improving the accuracy of ship transfer alignment. The angular rate matching method based on inertial sensor is the research focus of ship deformation measurement. The nonlinear hull deformation model and the drift model of fiber optic gyroscope (fog) are established in view of the large installation error angle of the inertial measurement unit in the large hull. The CKF filtering method is used to estimate the model. The estimation accuracy of UKF and CKF nonlinear filtering is deduced theoretically, and the theoretical comparison and simulation are carried out. The results show that the estimation accuracy of the static error angle and the dynamic error angle is always within 20 "with the increase of the heading mounting error angle from 30 擄to 50 擄. Compared with UKF, the performance advantage of UKF is more obvious with the increase of nonlinear degree of the system.
【作者單位】： 哈爾濱工程大學(xué)自動化學(xué)院;
【基金】：國家自然科學(xué)基金項目(61203225) 黑龍江省自然科學(xué)基金項目(QC2014C069) 黑龍江省博士后科研啟動資金(LBH-Q15032) 海洋工程國家重點實驗室開放課題(1616)
【分類號】：U661.4;TN713

【相似文獻】

相關(guān)期刊論文 前10條

1 朱昀p，

本文編號：1868751