US 12,359,916 B2
Nonlinear frequency modulated gyroscope
Andrew B. Sabater, San Diego, CA (US)
Assigned to United States of America as represented by the Secretary of the Navy, Washington, DC (US)
Filed by Naval Information Warfare Center Pacific, San Diego, CA (US)
Filed on Dec. 8, 2022, as Appl. No. 18/063,124.
Prior Publication US 2024/0191995 A1, Jun. 13, 2024
Int. Cl. G01C 19/5776 (2012.01); G01C 25/00 (2006.01); G01K 7/18 (2006.01); G01K 7/22 (2006.01); G05D 23/24 (2006.01); H05B 1/02 (2006.01)
CPC G01C 19/5776 (2013.01) [G01C 25/005 (2013.01); G01K 7/18 (2013.01); G01K 7/22 (2013.01); G05D 23/24 (2013.01); H05B 1/023 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A nonlinear frequency modulated gyroscope, comprising:
a degenerate-mode mechanical resonator with two or more modes, wherein the two or more modes are coupled via a Coriolis effect;
positive feedback circuits for each mode of the degenerate-mode mechanical resonator, wherein the positive feedback circuits include an analog or digital automatic gain control circuit that maintains oscillations of each mode at a constant amplitude;
a temperature control component, wherein the temperature control component includes a temperature sensor and heating elements; and
a gyroscope controller, wherein the gyroscope controller is an application-specific integrated circuit, a field programmable gate array, or microcontroller;
wherein the degenerate-mode mechanical resonator, the positive feedback circuits, and the temperature control component are subsystems of the nonlinear frequency modulated gyroscope.