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Toward Inertial-Navigation-on-Chip: The Physics and Performance Scaling of Multi-Degree-of-Freedom Resonant MEMS Gyroscopes: Springer Theses

Autor Haoran Wen
en Limba Engleză Paperback – 25 sep 2020
This thesis develops next-generation multi-degree-of-freedom gyroscopes and inertial measurement units (IMU) using micro-electromechanical-systems (MEMS) technology. It covers both a comprehensive study of the physics of resonator gyroscopes and novel micro/nano-fabrication solutions to key performance limits in MEMS resonator gyroscopes. Firstly, theoretical and experimental studies of physical phenomena including mode localization, nonlinear behavior, and energy dissipation provide new insights into challenges like quadrature errors and flicker noise in resonator gyroscope systems. Secondly, advanced designs and micro/nano-fabrication methods developed in this work demonstrate valuable applications to a wide range of MEMS/NEMS devices. In particular, the HARPSS+ process platform established in this thesis features a novel slanted nano-gap transducer, which enabled the first wafer-level-packaged single-chip IMU prototype with co-fabricated high-frequency resonant triaxial gyroscopes and high-bandwidth triaxial micro-gravity accelerometers. This prototype demonstrates performance amongst the highest to date, with unmatched robustness and potential for flexible substrate integration and ultra-low-power operation. This thesis shows a path toward future low-power IMU-based applications including wearable inertial sensors, health informatics, and personal inertial navigation.
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Specificații

ISBN-13: 9783030254728
ISBN-10: 3030254720
Pagini: 127
Ilustrații: XIII, 127 p. 92 illus., 83 illus. in color.
Dimensiuni: 155 x 235 mm
Greutate: 0.21 kg
Ediția:1st ed. 2019
Editura: Springer International Publishing
Colecția Springer
Seria Springer Theses

Locul publicării:Cham, Switzerland

Cuprins

Chapter1: Introduction.- Chapter2: The physics of resonant mems gyroscopes.- Chapter3: Bias control in pitch and roll gyroscopes.- Chapter4: Scale-factor enhancement.- Chapter5: Integrated inertial measurement unit.- Chapter6: Bias stability limit in resonant gyroscopes.- Chapter7: Conclusions and future work.

Notă biografică

Haoran Wen is a research engineer in the School of Electrical and Computer Engineering at Georgia Tech. He received his PhD from Georgia Tech in 2018.

Textul de pe ultima copertă

This thesis develops next-generation multi-degree-of-freedom gyroscopes and inertial measurement units (IMU) using micro-electromechanical-systems (MEMS) technology. It covers both a comprehensive study of the physics of resonator gyroscopes and novel micro/nano-fabrication solutions to key performance limits in MEMS resonator gyroscopes. Firstly, theoretical and experimental studies of physical phenomena including mode localization, nonlinear behavior, and energy dissipation provide new insights into challenges like quadrature errors and flicker noise in resonator gyroscope systems. Secondly, advanced designs and micro/nano-fabrication methods developed in this work demonstrate valuable applications to a wide range of MEMS/NEMS devices. In particular, the HARPSS+ process platform established in this thesis features a novel slanted nano-gap transducer, which enabled the first wafer-level-packaged single-chip IMU prototype with co-fabricated high-frequency resonant triaxial gyroscopes and high-bandwidth triaxial micro-gravity accelerometers. This prototype demonstrates performance amongst the highest to date, with unmatched robustness and potential for flexible substrate integration and ultra-low-power operation. This thesis shows a path toward future low-power IMU-based applications including wearable inertial sensors, health informatics, and personal inertial navigation.

Caracteristici

Nominated as an outstanding PhD thesis by Georgia Institute of Technology Provides an accessible introduction to resonator gyroscopes Presents insights that increase understanding of bias instability in resonant gyroscope technology Demonstrates a new processing technique which overcomes limitations of current gyroscopes