冲击状态下电控罗经航向值的数据拟合研究  

Study on the Data Fitting of Electromagnet Control Gyrocompass Course Value under the Status of Impact

作　　者：李成[1] 安佰勇[1] 俞利江[1] 

机构地区：[1]海军潜艇学院,青岛266071

出　　处：《船舶工程》2010年第S2期99-101,共3页Ship Engineering

摘　　要：通过正交最小二乘拟合的方法来建立电控罗经在冲击状态下的航向值模型,首先用适当度判定法来确定多项式的拟合阶次,通过最小二乘方法拟合之后,得到一个冲击状态下及回复过程的航向值模型,然后用离差法进行检验.正交多项式最小二乘法拟合虽然是针对实测数据进行的拟合,不具有数据的普遍适用性,是对于获取无经验公式的模型,效果较好;同时,对于后续的利用极小值原理以及参数约束估计法来进一步建立系统模型有着重要的意义.Establish a course value model of electromagnet control gyrocompass under the status of impact by the method of orthogonal least squares fitting.First, determine the appropriate order of polynomial fitting by the determination method of appropriate order .After that, we can establish a model without empirical formula.Then, we do a test by deviation method.Although orthogonal polynomial least squares fitting is fitting for the experimental data, and it does not have universal applicability of the data.Nevertheless, it works well for getting the model of empirical formula.Meanwhile, it has an important significance for establishing system model by subsequent using of the minimum principle and parameter estimation bound.

关 键 词：电控罗经 正交多项式最小二乘法 航向值模型 离差度量法 

分 类 号：U666.151[交通运输工程—船舶及航道工程]