Patent ID: 6978674

Claim:
A two axis vibrating ring gyroscope, said gyroscope comprising: a substantially planar vibratory resonator having a substantially ring or hoop-like structure with inner and outer peripheries extending around a common axis, carrier mode drive means for causing the resonator to vibrate in a cosnθ vibration mode, carrier mode pick-off means for sensing movement of the resonator in response to said carrier mode drive means, X-axis response mode pick-off means for detecting movement of the resonator in response to rotation about the X-axis, X-axis response mode drive means for nulling said movement of the resonator in response to rotation about the X-axis, y-axis response mode pick-off means for detecting movement of the resonator in response to rotation about the y-axis, y-axis response mode drive means for nulling said movement of the resonator in response to rotation about the y-axis, and support means for flexibly supporting the resonator and for allowing the resonator to vibrate relative to the support means, wherein the support means comprises only L legs, where, when L is even: L=2N/K, and where, when L is odd: L=N/K where K is an integer, wherein L>2 when N is the carrier mode order fixing the carrier mode orientation on the ring or hoop-like structure, and wherein L<4N when N is the response mode order.