FEA Method for Analysis of SINS Error Caused by Vibration Isolation System

doi:10.3969/j.issn.1000-1093.2016.09.003

Abstract

Abstract: In order to study the strapdown inertial navigation system (SINS) error caused by vibration isolation system which breaks the fixed connection between SINS and carrier, the error mechanism is analyzed, and an analysis method based on finite element analysis (FEA) is proposed. A model of SINS with vibration isolation system is constructed in FEA software. The motion parameters generated by trajectory generator are used to simulate the motion processes of carrier and SINS. The measured data of inertial devices obtained from the FEA results can be used to resolve and acquire the SINS error caused by vibration isolation system. The research results show that the FEA-based method can realize the quantitative analysis of SINS error caused by vibration isolation system, which is very important for optimization design of vibration isolation system.

Key words: ordnance science and technology, strapdown inertial navigation system, vibration isolation system, error, finite element analysis

CLC Number:

TJ819

GAO Jun-qiang, TANG Xia-qing, HUANG Xiang-yuan, CHENG Xu-wei. FEA Method for Analysis of SINS Error Caused by Vibration Isolation System[J]. Acta Armamentarii, 2016, 37(9): 1570-1577.

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