The Lever-arm Error Effect Research in TransferAlignment Model with Large Initial Misalignment Angles

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The Lever-arm Error Effect Research in TransferAlignment Model with Large Initial Misalignment Angles

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[1]DING Guo-qiang,MA Jun-xia,XIONG Ming,et al.The Lever-arm Error Effect Research in TransferAlignment Model with Large Initial Misalignment Angles[J].Journal of Zhengzhou University (Engineering Science),2015,36(02):110-114.[doi:10.3969/j.issn.1671-6833.2015.02.024]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 36 Number of periods: 2015 02 Page number: 110-114 Column: Public date: 2015-04-30

Title:: The Lever-arm Error Effect Research in TransferAlignment Model with Large Initial Misalignment Angles

Author(s):: DING Guo-qiang1; MA Jun-xia3; XIONG Ming1; Qiao Xiang-wei1; 1.College of Electrical & Information Engineering, Zhengzhou University of Light Industry , Zhengzhou 450002,China; 2.Soft-ware Engineering College , Zhengzhou University of Light Industry , Zhengzhou 450002, China; 3.Xi’an Aerospace Precision E-lectromechanical Institute，Xi ’ an 710100 , China

Keywords:: transfer alignment ; lever-arm effect error; nominal misalignment angle; velocity and attitude matc-hing; error compensation

CLC:: U666.12 V249.32+2

DOI:: 10.3969/j.issn.1671-6833.2015.02.024

Abstract:: Proceeding from actual technological needs of the inertial navigation system ’s initial alignmenttechnology of warship shipboards,specific to rigidity shipboards,this paper analyzed the affect expressions ofLever-arm effect of transfer alignment process in strap-down inertial navigation system ’s velocity and accelera-tion ( ecificforce ) with the effect of lever-arm error vector,and in the situation of large initial misalignment an-gles,and with the conceptions of the nominal misalignment angle and calculated angle developed the velocityand attitudes matching transfer alignment model algorithm with large misalignment attitudes of SINS’otherthan traditional models,and carried out the system states and parameters estimation performance research.Thesimulated results indicate that the model algorithm performance,with comparison studying inhering lever-armvector error’s influence on SINS misalignment attitudes’estimation error and its alignment accuracy,and withdifferent initial lever-arm vectors their effects on misalignment attitudes’estimation error and its accuracy,andverified the model algorithm’s validity and its superior alignment accuracy,and the research results are of greattheory and application value in design of SINS.

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