基于图优化参数辨识的船体变形测量方法  

Hull deformation measurement method based on graph optimization parameter identification

作　　者：徐东生 张霄力 何荧 彭侠夫 宋凝芳[4] XU Dongsheng;ZHANG Xiaoli;HE Ying;PENG Xiafu;SONG Ningfang(School of Aerospace Engineering,Xiamen University,Xiamen 361005,China;School of Automation,Beijing Institute of Technology,Beijing 100081,China;Jiangnan Electromechanical Design Institute,Guiyang 550009,China;School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]厦门大学航空航天学院,福建厦门361005 [2]北京理工大学自动化学院,北京100081 [3]江南机电设计研究所,贵州贵阳550009 [4]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《哈尔滨工程大学学报》2024年第2期247-253,共7页Journal of Harbin Engineering University

基　　金：国家重点实验室基金项目(2021-JCJQ-LB-070-04)。

摘　　要：针对船体变形惯性匹配测量中模型参数准确性影响测量精度的问题,本文提出了一种基于图优化的船体变形模型参数辨识方法并应用于惯性匹配测量。通过分析船体变形模型预设参数对惯性匹配测量的Kalman滤波影响,得到参数对惯性匹配精度的影响机制;利用船体变形历史数据,结合待辨识的船体变形模型参数组成图优化超图,建立船体变形参数辨识的图优化模型,实现船体变形惯性匹配预设模型参数的辨识,最后将参数辨识结果代入惯性匹配方程以完成准确测量。仿真实验验证了该方法可以有效地完成船体变形参数辨识,保障船体变形惯性匹配测量的准确度。As the accuracy of model parameters affects the accuracy of inertial matching measurements of hull de-formation,this study proposes a method for parameter identification of the hull deformation model based on graph optimization and applies it to inertial matching measurements.By analyzing the influence of preset parameters of the hull deformation model on the Kalman filter of inertial matching measurements,the influence mechanism of parame-ters on inertial matching accuracy is obtained.By combining hull deformation historical data with hull deformation model parameters to be identified,the graph optimization model of hull deformation parameter identification is es-tablished,thus realizing the identification of preset model parameters of hull deformation inertial matching.Finally,the parameter identification results are substituted into the inertial matching equation to complete the accurate meas-urement.The simulation results demonstrate that this method effectively identifies the hull deformation parameters and ensures the accuracy of inertial matching measurements of hull deformation.

关 键 词：船体变形 惯性匹配测量 预设参数 KALMAN滤波 图优化 超图 参数辨识 准确测量 

分 类 号：U666.1[交通运输工程—船舶及航道工程]