Kumar, KES and Raveendranath, K and Sekhar, S and Ananthasuresh, GK (2023) A Comparison of Ring and Disk Resonator Gyroscopes Based on Their Degenerate Eigenmode Shapes. In: Mechanisms and Machine Science, 2 - 4 December 2022, Hyderabad, pp. 152-161.
Full text not available from this repository.Abstract
Micromachined gyroscopes are beginning to compete with their macro-scale counterparts in terms of performance. This has been made possible because of a remarkable design change that has come to be known as a Disk Resonator Gyroscope (DRG). The design of a DRG can be thought of as an extension of the Ring Resonator Gyroscope (RRG) or vibratory ring gyroscope (VRG). After experimenting with various ring configurations and their suspensions attached to the ring, research has now moved to multiple configurations of DRGs. Central to all these designs are the degenerate eigenmode shapes: a pair of mode shapes for the same frequency. As one mode shape is used for resonant electrostatic actuation and another for sensing the energy transferred to it due to Coriolis acceleration, mode shapes decide the change in capacitance per unit angular rate. The objective of maximizing the capacitance change is to be balanced with the performance constraints on keeping the eigenfrequency low (but not too low) and quality factor high. In this paper, we compare different designs of ring and disk resonators from the literature in terms of eigenfrequency and mode shapes. We conclude that it is beneficial to have the mode shape of a gyroscope design close to the elliptical mode shape of a free ring.
| Item Type: | Conference Paper |
|---|---|
| Publication: | Mechanisms and Machine Science |
| Publisher: | Springer Science and Business Media B.V. |
| Additional Information: | The copyright for this article belongs to the Springer Science and Business Media B.V. |
| Keywords: | Acceleration; Capacitance; Electrostatic actuators; Resonators, Capacitive sensing; Design change; Disk resonator; Eigen modes; Eigenfrequency; Macroscales; Micromachined gyroscope; Mode shapes; Performance; Ring resonator, Gyroscopes |
| Department/Centre: | Division of Electrical Sciences > Electrical Communication Engineering Division of Mechanical Sciences > Mechanical Engineering |
| Date Deposited: | 31 Jan 2023 07:17 |
| Last Modified: | 31 Jan 2023 07:17 |
| URI: | https://eprints.iisc.ac.in/id/eprint/79626 |
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