Vibrating gyroscope including a pair of piezoelectric bodies with electrically floating interface
First Claim
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1. A vibrating gyroscope comprising:
- a vibrating unit including at least a pair of piezoelectric bodies, the piezoelectric bodies being stacked and polarized in a stacked direction thereof such that polarizing directions of the piezoelectric bodies are opposed to each other, an interface between the piezoelectric bodies being electrically floating with respect to a reference potential; and
a driving circuit for driving the vibrating unit, the driving circuit receiving at least one feedback signal from the vibrating unit and outputting to the vibrating unit a driving signal which has substantially the same phase as the feedback signal.
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Abstract
A vibrating gyroscope includes a vibrating unit and a driving unit for driving the vibrating unit. The vibrating unit includes at least a pair of piezoelectric bodies stacked and polarized in a stacked direction thereof such that polarizing directions of the piezoelectric bodies are opposed to each other. An interface between the piezoelectric bodies is electrically floating with respect to a reference potential. The driving circuit receives at least one feedback signal from the vibrating unit and outputs to the vibrating unit a driving signal which has substantially the same phase as the feedback signal.
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Citations
11 Claims
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1. A vibrating gyroscope comprising:
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a vibrating unit including at least a pair of piezoelectric bodies, the piezoelectric bodies being stacked and polarized in a stacked direction thereof such that polarizing directions of the piezoelectric bodies are opposed to each other, an interface between the piezoelectric bodies being electrically floating with respect to a reference potential; and a driving circuit for driving the vibrating unit, the driving circuit receiving at least one feedback signal from the vibrating unit and outputting to the vibrating unit a driving signal which has substantially the same phase as the feedback signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification