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Toward Inertial-Navigation-on-Chip
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2019

Toward Inertial-Navigation-on-Chip

The Physics and Performance Scaling of Multi-Degree-of-Freedom Resonant MEMS Gyroscopes

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ISBN
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978-3-030-25470-4
9783030254704
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EVZK58N
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-21.7
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CHF 118.00
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92.34
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1
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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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Inhaltsverzeichnis

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.

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Schweiz
14.09.2019
Springer Verlag
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Sprache
Englisch
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127 Seiten
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