Online Gyro Bias Estimation from Single Vector Measurements Using Regression Models

Publisher:
Elsevier
Publication Type:
Journal Article
Citation:
IFAC-PapersOnLine, 2023, 56, (1), pp. 252-257
Issue Date:
2023-01-01
Full metadata record
This paper addresses the problem of on-line consistent estimation of gyro bias using the measurements of a single vector and the biased angular velocity – both in the body-fixed frame. We propose two globally convergent gyro bias observers using new regression models, which are capable to deal with the cases of constant and time-varying reference vectors, respectively. Indeed, there are quite a few works discussing the latter case. To address this, we derive a nonlinear regression model, based on which a convexified gradient descent observer is designed, providing globally asymptotically convergent estimates to the gyro bias under some sufficient excitation conditions. The proposed schemes are illustrated by some numerical simulations.
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