舰体挠曲运动在线建模研究

针对船体挠曲运动在线建模问题,提出了一种从导弹惯性导航系统测量数据中提取船体挠曲运动信息的方法,并通过相关因子法分析,验证了其在统计意义上的有效性。依照相关法,推导出了基于导弹惯性导航系统测量数据的船体挠曲模型参数在线辨识算法。数值仿真显示,模型参数估计值与真实值表现出相当好的一致性,且模型参数估计算法在典型海况下显示出良好的稳定性和鲁棒性,这表明所提方法用于船体挠曲变形的在线建模具备可行性。

Research on the ship flexure on-line modeling

Ship flexure on-line modeling is investigated.Firstly,a method for extracting the ship flexure information from the missile inertial navigation system(INS) data is presented.Its effectiveness in statistical sense is verified by utilizing the correlation coefficient analysis.Then an algorithm for identifying the required ship flexure model parameters based on the missile INS data is derived using the correlation method.Last,numerical simulations show a good agreement between the estimated model parameters and the true values,and the good stability and robustness of the derived algorithm under the representative sea conditions is also manifsted,which reveals the feasibility of the proposed approach for the ship flexure on-line modeling.