Resonator and method of controlling the same

摘要

A resonator in which in addition to the normal anchor at a nodal point, a second anchor arrangement is provided and an associated connecting arm between the resonator body and the second anchor arrangement. The connecting arm connects to the resonator body at a non-nodal point so that it is not connected to a normal position where fixed connections are made. The connecting arm is used to suppress transverse modes of vibration.

主权项

1. A resonator comprising:
a resonator body coupled to a connecting arm to form a combined mass; a plurality of actuation electrodes for driving the resonator into a first resonant mode in a first plane, in which the combined mass vibrates parallel to a first axis in the first plane, and also driving the resonator into a second resonant mode not in the first plane; and a detection arrangement for detecting the vibration in the first axis direction and generating an electrical output signal derived from the vibration, wherein the resonator further comprises a first anchor arrangement at which the resonator is fixed in position, wherein the first anchor arrangement connects to the resonator body at a first nodal point of the first resonant mode, and wherein the resonator further comprises a second anchor arrangement, and wherein the connecting arm includes a first end coupled to the second anchor arrangement at a second nodal point of the first resonant mode, wherein the connecting arm includes a second end coupled to the resonator body at a non-nodal point; and wherein the second nodal point of the first resonant mode is also a non-nodal point of the second resonant mode.