Analysis of Motion Equations and Some Properties of the Corrected Strapdown Computer-Aided Gyrocompass

Analysis of Motion Equations and Some Properties of the Corrected Strapdown Computer-Aided Gyrocompass

A trend to design structurally simpler but algorithmically more complex strapdown gyroscopic compasses compared to regular Cardan suspension devices is on the rise. In such devices, on-board computer units take on the functions of orientation and Cardan joints by processing signals from gyroscopes a...

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Bibliographic Details
Published in:2021 28th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS) pp. 1 - 5
Main Authors: Plotnikov, P. K., Plotnikov, A. P.
Format: Conference Proceeding
Language:English
Published: Concern CSRI Elektropribor, JSC 31-05-2021
Subjects:
Accelerometers
adjustment signals
algorithms
Compass
Differential equations
Gyroscopes
gyroscopic compass
moving object
Navigation
onboard computer
orientation
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Summary:A trend to design structurally simpler but algorithmically more complex strapdown gyroscopic compasses compared to regular Cardan suspension devices is on the rise. In such devices, on-board computer units take on the functions of orientation and Cardan joints by processing signals from gyroscopes and accelerometers attached to the housing. This report is based on differential equations of motion of single-rotor Cardan assembly gyroscopic compasses with indirect adjustment, as well as on algorithms of strapdown inertial orientation systems (SIOS) [1] in order to build algorithms of strapdown gyroscopic compass operation. Analogy between properties of regular indirect-adjustment gyroscopic devices and analytically designed strapdown computer gyroscopic compasses is shown. Application of adjustments of non-inertial nature to improve the accuracy of gyroscopic compasses is shown.
DOI:10.23919/ICINS43216.2021.9470871