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Methods and Procedure for the Nonlinear Dynamic Characterization of Inertial Sensors Under Diverse Operational Conditions

Borges Farconi, Leonardo and Bestard Körner, Matias (2023) Methods and Procedure for the Nonlinear Dynamic Characterization of Inertial Sensors Under Diverse Operational Conditions. ESA GNC-ICATT 2023, 12.-16. Jun. 2023, Sopot, Polen.

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Official URL: https://az659834.vo.msecnd.net/eventsairwesteuprod/production-atpi-public/7787a19f71f442149baec5356fac4bf3

Abstract

Inertial Measurement Units or Navigation Systems (IMU, INS) generally comprise sensors, namely accelerometers and gyroscopes, in many configurations for aerospace Guidance Navigation and Control applications. The sensors are generally modelled and tested for only a few parameters, limiting the behaviour knowledge under adverse environmental conditions. Using established and standard testing, such as vibration shaker and rotation table facilities, we developed a methodology to model the nonlinear parameters of sensors, especially those under vibration, high acceleration, and varying thermal conditions. The method records the data in the time domain, establishes the ground truth through sensor fusion, corrects misalignments and identifies ARMAX and NARMAX models using recursive Unified Least Squares (ULS) method. These identification methods are adapted and use a proposed model selection strategy based on the Error Reduction Ratio (ERR), the t-statistic and the Akaike Information Criterion (AIC). The simulation results validate the method’s concept and provide insight into the reach of the models derived for accelerometer sensors.

Item URL in elib:https://elib.dlr.de/197358/
Document Type:Conference or Workshop Item (Speech)
Title:Methods and Procedure for the Nonlinear Dynamic Characterization of Inertial Sensors Under Diverse Operational Conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Borges Farconi, LeonardoUNSPECIFIEDhttps://orcid.org/0009-0009-9523-657X143797071
Bestard Körner, MatiasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:June 2023
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:imu;characterization;inertial-sensor;nonlinear-characterization
Event Title:ESA GNC-ICATT 2023
Event Location:Sopot, Polen
Event Type:international Conference
Event Dates:12.-16. Jun. 2023
Organizer:Leonardo Borges Farconi
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Project CALLISTO [SY], R - Project ReFEx - Reusability Flight Experiment
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Navigation and Control Systems
Deposited By: Borges Farconi, Leonardo
Deposited On:06 Oct 2023 09:50
Last Modified:06 Oct 2023 09:50

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