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A new method for measuring angular increments based on a tri-axial accelerometer and a tri-axial magnetometer

Zhu X. N., Ma M., Cheng D. F., Zhou Zh. J.

Artificial Satellites : Journal of Planetary Geodesy

2018

Vol. 53, No. 1

47--53

Tri-axial gyroscopes used to be the only instrument used to measure the angular increments of airplanes. However, because there were no reference devices, drift and accumulation errors affected the accuracy of the estimated attitude. In this paper, we propose a novel method for measuring angular increments based on a tri-axial accelerometer and a triaxial magnetometer. Then, we mathematically proved the feasibility of the proposed method. The results of our simulation and experimental tests indicated that the proposed method accurately indicates the attitude of an airplane.

Analyses of Electronic Inclinometer Data for Tri-axial Accelerometer’s Initial Alignment

Šipoš M., Roháč J., Nováček P.

Przegląd Elektrotechniczny

2012

R. 88, nr 1a

286-290

This paper deals with the usage of a dual-axis electronic inclinometer EZ-TILT-2000-008 to improve an initial alignment of a tri-axial accelerometer, which forms a part of the inertial measurement unit ADIS16405. There were performed several measurements under various initial conditions with the usage of a precise Rotational-Tilt Platform as a reference. Based on measured data the alignment procedure accuracy, null repeatability, stability of initial null angle, hysteresis, and cross-axis dependence were analyzed and the results of these analyses are presented.

Zaprezentowano wykorzystanie dwuosiowego inklinometru EZ-TILT-2000-008 do poprawy ustawiania trzyosiowego przyśpieszeniomierza. Przeprowadzono badania dokładności, powtarzalności zera, histerezy i wpływu osi w opracowanym przyśpieszeniomierzu.