Small inertial measurement units: sources of error and limitations on accuracy

Michael E. Hoenk

doi:10.1117/12.179603

13 July 1994 Small inertial measurement units: sources of error and limitations on accuracy

Michael E. Hoenk

Proceedings Volume 2220, Sensing, Imaging, and Vision for Control and Guidance of Aerospace Vehicles; (1994) https://doi.org/10.1117/12.179603
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

Limits on the precision of small accelerometers for inertial measurement units are enumerated and discussed. Scaling laws and errors which affect the precision are discussed in terms of tradeoffs between size, sensitivity, and cost. Thermal noise and displacement transducer sensitivity constrain the size of an accelerometer for a given sensitivity, and error correction for inertial navigation leads to a tradeoff between cost and precision. Emphasis is placed on micromachined silicon accelerometers as a potential technology for manufacturing low cost, precision sensors, and sample calculations are given to illustrate the principles.

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Michael E. Hoenk "Small inertial measurement units: sources of error and limitations on accuracy", Proc. SPIE 2220, Sensing, Imaging, and Vision for Control and Guidance of Aerospace Vehicles, (13 July 1994); https://doi.org/10.1117/12.179603

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KEYWORDS

Silicon

Information operations

Transducers

Sensors

Capacitance

Electronics

Aerospace engineering

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