Electronic self calibration design for disk resonator gyroscopes using electrode time multiplexing
First Claim
1. A method for determining motion with a disk resonator gyroscope, the method comprising:
- sensing, by at least one first axis electrode for sensing and driving associated with a first axis of a resonator, motion associated with the resonator;
driving the at least one first axis electrode for sensing and driving with a first axis actuation signal produced by first axis drive circuitry associated with the first axis of the resonator, wherein the sensing and the driving of the at least one first axis electrode for sensing and driving are time multiplexed;
sensing, by at least one second axis electrode for sensing and driving associated with a second axis of the resonator, the motion associated with the resonator;
driving the at least one second axis electrode for sensing and driving with a second axis actuation signal produced by second axis drive circuitry associated with the second axis of the resonator, wherein the sensing and the driving of the at least one second axis electrode for sensing and driving are time multiplexed;
synchronizing, with a synchronous switch, the time multiplexing of the sensing and the driving of the at least one first axis electrode for sensing and driving with the time multiplexing of the sensing and the driving of the at least one second axis electrode for sensing and driving; and
switching, with the synchronous switch, a mode of operation for the first axis drive circuitry and a mode of operation for the second axis drive circuitry such that the first axis drive circuitry and the second axis drive circuitry operate in different modes of operation, and wherein the modes of operation are a force to rebalance (FTR) mode and an automatic gain control (AGC) mode.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems, methods, and apparatus for a disk resonator gyroscope are disclosed. In one or more embodiments, the disclosed method involves sensing, by at least one first axis sensor/driver electrode associated with a first axis of a resonator, motion associated with the resonator. The method further involves driving at least one first axis sensor/driver electrode with a first axis actuation signal produced by first axis drive circuitry associated with the first axis of the resonator. Also, the method involves sensing, by at least one second axis sensor/driver electrode associated with a second axis of the resonator, the motion associated with the resonator. Further, the method involves driving at least one second axis sensor/driver electrode with a second axis actuation signal produced by second axis drive circuitry associated with the second axis of the resonator.
-
Citations
20 Claims
-
1. A method for determining motion with a disk resonator gyroscope, the method comprising:
-
sensing, by at least one first axis electrode for sensing and driving associated with a first axis of a resonator, motion associated with the resonator; driving the at least one first axis electrode for sensing and driving with a first axis actuation signal produced by first axis drive circuitry associated with the first axis of the resonator, wherein the sensing and the driving of the at least one first axis electrode for sensing and driving are time multiplexed; sensing, by at least one second axis electrode for sensing and driving associated with a second axis of the resonator, the motion associated with the resonator; driving the at least one second axis electrode for sensing and driving with a second axis actuation signal produced by second axis drive circuitry associated with the second axis of the resonator, wherein the sensing and the driving of the at least one second axis electrode for sensing and driving are time multiplexed; synchronizing, with a synchronous switch, the time multiplexing of the sensing and the driving of the at least one first axis electrode for sensing and driving with the time multiplexing of the sensing and the driving of the at least one second axis electrode for sensing and driving; and switching, with the synchronous switch, a mode of operation for the first axis drive circuitry and a mode of operation for the second axis drive circuitry such that the first axis drive circuitry and the second axis drive circuitry operate in different modes of operation, and wherein the modes of operation are a force to rebalance (FTR) mode and an automatic gain control (AGC) mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system for a disk resonator gyroscope, the system comprising:
-
at least one first axis electrode for sensing and driving associated with a first axis of a resonator to sense motion associated with the resonator; a first axis drive circuitry associated with the first axis of the resonator to produce a first axis actuation signal to drive the at least one first axis electrode for sensing and driving, wherein the sensing and the driving of the at least one first axis electrode for sensing and driving are time multiplexed; at least one second axis electrode for sensing and driving associated with a second axis of the resonator to sense the motion associated with the resonator; a second axis drive circuitry associated with the second axis of the resonator to produce a second axis actuation signal to drive the at least one second axis electrode for sensing and driving, wherein the sensing and the driving of the at least one second axis electrode for sensing and driving are time multiplexed; and a synchronization switch to synchronize the time multiplexing of the sensing and the driving of the at least one first axis electrode for sensing and driving with the time multiplexing of the sensing and the driving of the at least one second axis electrode for sensing and driving, and to switch a mode of operation for the first axis drive circuitry and a mode of operation for the second axis drive circuitry such that the first axis drive circuitry and the second axis drive circuitry operate in different modes of operation, and wherein the modes of operation are a force to rebalance (FTR) mode and an automatic gain control (AGC) mode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification