A PHASE-LOCKED MECHANICAL RESONATOR PAIR AND ITS APPLICATION IN MICROMACHINED VIBRATION GYROSCOPE
First Claim
Patent Images
1. A mechanical resonator pair comprising, at least:
- a first mechanical resonator comprising, at least;
a resonating mass;
a driving mechanism through which the resonating mass of said first mechanical resonator is driven to resonate along a pre-selected axis;
a driving feedback mechanism that provides status information of the resonance of said first mechanical resonator along the pre-selected axis wherein the status information of the resonance includes amplitude, frequency, and phase of the resonance;
a second mechanical resonator with the resonance of said second mechanical resonator phase-locked to the resonance of said first mechanical resonator with certain preset phase difference comprising, at least;
a resonating mass;
a driving mechanism through which the resonating mass of said second mechanical resonator is driven to resonate along the same pre-selected axis of said first mechanical resonator;
a driving feedback mechanism that provides status information of the resonance of said second mechanical resonator along the pre-selected axis wherein the status information of the resonance includes amplitude, frequency, and ghase of the resonance;
a frequency adjustment mechanism through which a natural resonant frequency for the resonance along the pre-selected axis of said second mechanical resonator can be adjusted by a signal.
8 Assignments
0 Petitions
Accused Products
Abstract
This invention is related to a phase-locked mechanical resonator pair that comprises at least two mechanical resonators wherein the resonance of the second mechanical resonator is phase-locked to the resonance of the first mechanical, and a micromachined vibration gyroscope that uses such phase-locked mechanical resonator pair as its resonating masses to generate differential Coriolis forces and to achieve inertial cancellation.
-
Citations
9 Claims
-
1. A mechanical resonator pair comprising, at least:
-
a first mechanical resonator comprising, at least;
a resonating mass;
a driving mechanism through which the resonating mass of said first mechanical resonator is driven to resonate along a pre-selected axis;
a driving feedback mechanism that provides status information of the resonance of said first mechanical resonator along the pre-selected axis wherein the status information of the resonance includes amplitude, frequency, and phase of the resonance;
a second mechanical resonator with the resonance of said second mechanical resonator phase-locked to the resonance of said first mechanical resonator with certain preset phase difference comprising, at least;
a resonating mass;
a driving mechanism through which the resonating mass of said second mechanical resonator is driven to resonate along the same pre-selected axis of said first mechanical resonator;
a driving feedback mechanism that provides status information of the resonance of said second mechanical resonator along the pre-selected axis wherein the status information of the resonance includes amplitude, frequency, and ghase of the resonance;
a frequency adjustment mechanism through which a natural resonant frequency for the resonance along the pre-selected axis of said second mechanical resonator can be adjusted by a signal. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A vibration gyroscope utilizing Coriolis Effect comprising, at least:
-
a first movable mass resonating at or close to a natural resonate frequency of said first movable mass along a pre-selected axis, where the resonance of said first movable mass along said pre-selected axis is to generate a Coriolis force when there is a rotation about an axis that is perpendicular to said pre-selected axis;
a driving mechanism that drives the first movable mass to resonate along the pre-selected axis;
a driving feedback mechanism that provides status information of the resonance of the first movable mass along the pre-selected axis wherein the status information of the resonance includes amplitude, frequency, and phase of the resonance;
a second movable mass resonating at or close to a natural resonate frequency of said second movable mass along the same pre-selected axis of the first movable mass, with the resonance of said second movable mass phase-locked to the resonance of the first movable mass with certain preset phase difference, preferably 180 degree or close to 180 degree;
a driving mechanism that drives the second movable mass to resonate along the pre-selected axis;
a driving feedback mechanism that provides status information of the resonance of the second movable mass along the pre-selected axis wherein the status information of the resonance includes amplitude, frequency, and phase of the resonance;
a frequency adjustment mechanism that adjusts the natural resonant frequency of the second movable mass for the resonance along the pre-selected axis. - View Dependent Claims (7, 8, 9)
-
Specification