Title: NIST Develops New Calibration Method for Three-Axis Accelerometers
NIST researchers have developed a novel calibration method for three-axis accelerometers that relies on intrinsic properties rather than traditional cross-axis sensitivity matrices. The method involves rotating the device under test in Earth’s gravitational field using a two-axis rotation and rate table.
The key innovation is defining the accelerometer by its intrinsic properties – the magnitude of its sensitivity and the angles between its axes. This approach reduces measurement uncertainties and provides a more accurate characterization of the device’s performance.
The method is particularly important given the rapid growth in production and commercial use of three-axis accelerometers, gyroscopes, and inertial measurement units. NIST’s work supports international efforts to establish the degree of equivalence of measurements between countries under the Metre Convention’s Mutual Recognition Arrangement.
The research, published in Volume 122, Article No. 32 (2017), provides detailed information on the method and its applications. The findings will help improve measurement capabilities and support stakeholders in achieving the lowest possible measurement uncertainties.
Keywords: Quantum Sensing, Quantum Metrology, Calibration
