A Framework for Calibrating Angular Accelerometers using a Motion Simulator

Jatiningrum, Dyah; Visser, Coen C. de; Paassen, Marinus van

doi:10.2514/6.2015-0406

Cited by 2 publications

(1 citation statement)

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“…A particular effect is apparent in the AA signal, where an additional frequency component is present at twice the original fundamental frequency, in constant angular velocity input motion. 8 Considering that the required input for angular accelerometers is a fairly rapid variation of angular velocity in the form of sinusoidal motion, the additional component will accumulate throughout the frequency spectrum.…”

Section: Introductionmentioning

confidence: 99%

Motion Simulator 2-Axis Input Design for Angular Accelerometer Calibration

Jatiningrum

Visser

Paassen

2016

AIAA Modeling and Simulation Technologies Conference

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The calibration of Angular Accelerometers requires a controlled test with a known acceleration profile. However, current turntables have been designed primarily for generating a constant rotational velocity. To generate a profile with varying angular acceleration we propose using constant rotational velocity on the two axes of a 2-axes motion simulator. The proposed sequence was developed to obtain the required rotational acceleration signal quality using only rotational velocity input. The identified pattern is applied to an envelope of test conditions, resulting in test matrix. This method provides an alternative means to generate inputs that can be used to calibrate angular accelerometers using calibration hardware that is not primarily designed to provide accurate acceleration inputs. Nomenclature AA Angular accelerometer DAS Data Acquisition System IMU Inertial Measurement Units PSD Power Spectral Density Subscripts i Inner-axis o Outer-axis Symbols α Angular acceleration, deg/s 2 i Unit vector in X-axis j Unit vector in Y-axis k Unit vector in Z-axis ω Angular velocity, deg/s ψ Inner-axis rotation angle, deg ω Associated angular velocity, deg/s r Radius of a circle, m SXY Z Coordinate System t Time, s

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Section: Introductionmentioning

confidence: 99%