2023
DOI: 10.3390/s23031564
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Precise Measurement and Compensation of the Micro Product of Inertia for Float Assembly in Pendulous Integrating Gyroscopic Accelerometers

Abstract: Nonlinear error has become the most critical factor restricting the measurement accuracy of pendulous integrating gyroscopic accelerometers (PIGA) during their improvement. The key to nonlinear error suppression for PIGA is the precise measurement and compensation of the micro product of inertia (MPOI) of the float assembly. However, the existing equipment and procedure for product of inertia (POI) measurement and compensation do not meet the accuracy requirements for MPOI. To solve this problem, novel equipme… Show more

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Cited by 2 publications
(1 citation statement)
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“…Inertial navigation systems (INS) measure a train's speed and directional changes using inertial sensors and calculate its current position based on its initial position using dead reckoning [16][17][18]. Its advantages include independence from external signals, good real-time performance, reliability even in signal-obstructed environments, and the ability to obtain comprehensive navigation information, including speed, position, and attitude [19][20][21]. However, due to the working principle of dead reckoning, INS is susceptible to cumulative errors, which gradually increase over time and require correction through other means [22].…”
Section: Introductionmentioning
confidence: 99%
“…Inertial navigation systems (INS) measure a train's speed and directional changes using inertial sensors and calculate its current position based on its initial position using dead reckoning [16][17][18]. Its advantages include independence from external signals, good real-time performance, reliability even in signal-obstructed environments, and the ability to obtain comprehensive navigation information, including speed, position, and attitude [19][20][21]. However, due to the working principle of dead reckoning, INS is susceptible to cumulative errors, which gradually increase over time and require correction through other means [22].…”
Section: Introductionmentioning
confidence: 99%