Micromechanical Rate Integrating Gyroscope With Angle-Dependent Bias Compensation Using a Self-Precession Method
| Autor: | Anthony Dorian Challoner, Parsa Taheri-Tehrani, David A. Horsley |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Rate integrating gyroscope business.industry 010401 analytical chemistry Vibrating structure gyroscope Gyroscope 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Compensation (engineering) Vibration Amplitude law Control theory Precession Electrical and Electronic Engineering 0210 nano-technology business Instrumentation Digital signal processing |
| Zdroj: | IEEE Sensors Journal. 18:3533-3543 |
| ISSN: | 2379-9153 1530-437X |
| DOI: | 10.1109/jsen.2018.2810843 |
| Popis: | Toward the objective of direct angle measurement using a rate integrating gyroscope (RIG) without a minimum rate threshold and with performance limited only by electrical and mechanical thermal noise, in this paper, we present the implementation of a generalized electronic feedback method for the compensation of MEMS gyroscope damping asymmetry (anisodamping) and stiffness asymmetry (anisoelasticity) on a stand-alone digital signal processing platform. Using the new method, the precession angle-dependent bias error and minimum rate threshold, two issues identified by Lynch for a MEMS RIG [1] due to anisodamping are overcome. To minimize angledependent bias, we augment the electronic feedback force of the amplitude regulator with a non-unity gain output distribution matrix selected to correct for anisodamping. Using this method, we have decreased the angle-dependent bias error by a factor of 12, resulting in a minimum rate threshold of ~3 °/s. To further improve RIG performance, an electronically induced self-precession rate is incorporated and successfully demonstrated to lower the rate threshold. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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