An FPGA-based interface system for high-frequency bulk-acoustic-wave microgyroscopes with in-run automatic mode-matching

C Li, H Wen, S Wisher… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
This paper presents a digital gyroscope interface system for high-frequency bulk-acoustic-
wave (BAW) gyroscopes with in-run automatic mode-matching (AMM) capability. The …

Eigenmode operation of piezoelectric resonant gyroscopes

M Hodjat-Shamami, F Ayazi - Microsystems & Nanoengineering, 2020 - nature.com
The theory of eigenmode operation of Coriolis vibratory gyroscopes and its implementation
on a thin-film piezoelectric gyroscope is presented. It is shown analytically that the modal …

Multi-coefficient eigenmode operation—breaking through 10°/h open-loop bias instability in wideband aluminum nitride piezoelectric BAW gyroscopes

Z Liu, H Wen, F Ayazi - Microsystems & Nanoengineering, 2023 - nature.com
In this paper, a modification to the eigenmode operation of resonant gyroscopes is
introduced. The multi-coefficient eigenmode operation can improve cross-mode isolation …

Wafer-level-packaged HARPSS+ MEMS platform: Integration of robust timing and inertial measurement units (TIMU) on a single chip

H Wen, A Daruwalla, Y Jeong, P Gupta… - 2018 IEEE/ION …, 2018 - ieeexplore.ieee.org
This paper presents a nano-precision high aspect-ratio poly-and single-crystal silicon DRIE
plus wet-etching fabrication platform, also known as HARPSS+, which enables single-chip …

A high-frequency resonant framed-annulus pitch or roll gyroscope for robust high-performance single-chip inertial measurement units

H Wen, A Daruwalla, CS Liu… - Journal of …, 2018 - ieeexplore.ieee.org
This paper introduces a novel resonator design for a high-frequency mode-matched pitch (or
roll) gyroscope featuring large excitation amplitude and high Coriolis coupling to address …

Bridging Piezoelectric And Electrostatic Effects: A Novel Pitch/Roll Gyroscope

Z Qi, Z Zhai, B Wang, W Yang, X **ong… - … on Inertial Sensors …, 2024 - ieeexplore.ieee.org
In this paper, we propose a novel aluminum nitride on silicon (AlN-on-Si) pitch/roll
gyroscope with piezoelectric driving/sensing and electrostatic mode-match operation. A …

600 µdps/√ Hz, 1.2 mm2 MEMS pitch gyroscope

M Gadola, MS Perna, M Allieri, P Robert… - … on Inertial Sensors …, 2021 - ieeexplore.ieee.org
The paper presents a miniaturized pitch/roll gyroscope with the lowest angle random walk
(ARW of 600 μdps/√ Hz) and lowest bias instability (BI of 2.8 dph) ever recorded on planar …

[PDF][PDF] Thin-Film AlN-on-Silicon Resonant Gyroscopes: Design, Fabrication, and Eigenmode Operation

M Hodjat-Shamami - 2020 - core.ac.uk
Figure 2.11 AlN-on-Si fabrication process flow.(a) deposit the piezoelectric stack on the SOI
wafer,(b) pattern the top Mo layer,(c) deposit and pattern backside oxide layer,(d) etch AlN …

Eigenmode operation of piezoelectric resonant gyroscopes

HS Mojtaba, A Farrokh - Microsystems & Nanoengineering, 2020 - search.proquest.com
The theory of eigenmode operation of Coriolis vibratory gyroscopes and its implementation
on a thin-film piezoelectric gyroscope is presented. It is shown analytically that the modal …

Bias Control in Pitch and Roll Gyroscopes

H Wen, H Wen - Toward Inertial-Navigation-on-Chip: The Physics and …, 2019 - Springer
High-frequency resonant gyroscope technology developed in recent years promises robust
high performance with mode-matched resonant operation. While high performance is shown …