大连海事大学学报 >
2019 , Vol. 45 >Issue 2: 50 - 57
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2019.02.007
基于RLSM的海洋无人航行器操纵性参数辨识
收稿日期: 2019-01-24
修回日期: 2019-03-04
网络出版日期: 2019-03-05
基金资助
国家自然科学基金资助项目(51709214;51809203);中国博士后科学基金资助项目(2018M642941).
Maneuvering parameters identification of unmanned marine vehicle based on RLSM
Received date: 2019-01-24
Revised date: 2019-03-04
Online published: 2019-03-05
针对传统海洋无人航行器(unmanned marine vehicle, UMV)操纵性参数辨识过程中,采用经典最小二乘法的辨识精度对基础数据量的依赖性较高、辨识误差较大的问题,提出一种改进的递推式最小二乘法(recursive least squares method, RLSM)用于UMV的操纵性参数辨识.首先,推导了UMV的操纵性响应模型,基于四阶龙格库塔法进行相应的数值仿真数据采集;然后,对所建立的辨识模型进行离散化处理,简化成标准的递推式最小二乘法模式,以便于进行参数辨识设计;最后,根据辨识结果进行5°、10°、20°、30°正弦和Z形的半物理仿真实验,结果验证了所提出RLSM辨识算法的有效性、可靠性和优越性.
关键词: 海洋无人航行器(UMV); 船舶操纵性; 参数辨识; 最小二乘法(LSM); 递推式最小二乘法(RLSM)
龚涛 , 董早鹏 . 基于RLSM的海洋无人航行器操纵性参数辨识[J]. 大连海事大学学报, 2019 , 45(2) : 50 -57 . DOI: 10.16411/j.cnki.issn1006-7736.2019.02.007
As the high dependence of identification accuracy on the amount of basic data and the problem of large identification error using the classical least squares method in the process of maneuverability parameter identification of unmanned marine vehicle (UMV),an improved recursive least squares method (RLSM) was proposed to identify the operational parameters of UMV. Firstly, the maneuverability response model of UMV was deduced, and the corresponding numerical simulation data acquisition was carried out based on the fourth-order Runge-Kutta method. Secondly, the established identification model was discretized and simplified to the standard recursive least squares model for parameter identification design. Finally, the semi-physical simulation experiments of 5°, 10°, 20°, 30° sine and Z-shaped were carried out according to the identification results, which verifies the validity, reliability and superiority of the proposed RLSM identification algorithm.
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