Coupling for multiple masses in a micromachined device

Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect

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7350412, 7351432, G01P 904

Patent

active

056356382

ABSTRACT:
A micromachined device has two suspended masses positioned near each other, each of the masses being dithered along a dither axis. Two couplings, each including an arcuate member and an anchored support beam, are provided between the masses to allow relative anti-phase movement and to resist relative in-phase movement. The coupling extends around a region intermediate the masses where a dither detection device is disposed.

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Geen, "Inertial Sensor Micromachining at Northrop", Institute of Navigation 061 (1993).
Hunt, et al. "Development of an Accurate Tuning-Fork Gyroscope" Proc. Inst. Mech. Engrs., v. 179, pt. 3B, 1964-65.
Hulsing, II, et al. "Miniature IMU Based on Micro-machined Coriolis Sensors", Institute of Navigation (1993).

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