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US 2026/0235406 A1Published application
Vibratory Gyro Element and Gyroscope
AssigneeSumitomo Precision Products Co., Ltd.
InventorsRyohei UCHINO, Ryuta ARAKI, Masahiro JOKI
Life of this patent
Estimating the term…
Abstract
In a vibratory gyro element (100), patterns of wirings (70) and the number of bonding wires (80) provided on the wirings are adjusted such that resistance components of electrodes (40) and corresponding wirings to be interchanged with each other are matched to each other between switching units (170) and a vibrator (20).
Claims10
A vibratory gyro element comprising:
- a vibrator;
- a plurality of electrodes on the vibrator;
- and
- a plurality of wirings corresponding to the plurality of electrodes;
- wherein
- the plurality of electrodes include:
- a primary drive electrode to excite a primary vibration in the vibrator;
- a primary detection electrode to detect the primary vibration;
- a secondary detection electrode to detect a secondary vibration of the vibrator;
- and
- a secondary drive electrode to drive the vibrator to cancel out the secondary vibration;
- switching units are provided to interchange the primary drive electrode and a corresponding wiring and the secondary drive electrode and a corresponding wiring or the secondary detection electrode and a corresponding wiring with each other, and to interchange the primary detection electrode and a corresponding wiring and the secondary detection electrode and the corresponding wiring or the secondary drive electrode and the corresponding wiring with each other;
- and
- at least one of patterns of the wirings, a number of bonding wires provided on the wirings, or another electrical element that increases or decreases electrical resistance is adjusted such that resistance components of the electrodes and the corresponding wirings to be interchanged with each other are matched to each other between the switching units and the vibrator.
11 more elements
A gyroscope comprising:
- a vibratory gyro element;
- and
- a calculator to calculate an angular velocity based on an output signal from the vibratory gyro element;
- wherein
- the vibratory gyro element includes:
- a vibrator;
- a plurality of electrodes on the vibrator;
- and
- a plurality of wirings corresponding to the plurality of electrodes;
- the plurality of electrodes include:
- a primary drive electrode to excite a primary vibration in the vibrator;
- a primary detection electrode to detect the primary vibration;
- a secondary detection electrode to detect a secondary vibration of the vibrator;
- and
- a secondary drive electrode to drive the vibrator to cancel out the secondary vibration;
- switching units are provided to interchange the primary drive electrode and a corresponding wiring and the secondary drive electrode and a corresponding wiring or the secondary detection electrode and a corresponding wiring with each other, and to interchange the primary detection electrode and a corresponding wiring and the secondary detection electrode and the corresponding wiring or the secondary drive electrode and the corresponding wiring;
- and
- at least one of patterns of the wirings, a number of bonding wires provided on the wirings, or another electrical element that increases or decreases electrical resistance is adjusted such that resistance components of the electrodes and the corresponding wirings to be interchanged with each other are matched to each other between the switching units and the vibrator.
15 more elements
Dependencies are inferred from the claim text.