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US 12,281,895 B2Granted
Vibration-type angular velocity sensor
AssigneeSumitomo Precision Products Co., Ltd.
InventorTakafumi Moriguchi
Life of this patent
Estimating the term…
Abstract
A vibration-type angular velocity sensor (100) includes a primary side control circuit (2) and a secondary side control circuit (3) which are configured so that a function as the primary side control circuit (2) and a function as the secondary side control circuit (3) are interchangeable, in which an offset value after interchange and an offset value before interchange are symmetric values with respect to a predetermined reference value.
Claims15
A vibration-type angular velocity sensor comprising:
- a vibrator;
- a primary side control circuit that has a closed control loop, an output of the closed control loop inducing primary vibration in the vibrator;
- and
- a secondary side control circuit that has a closed control loop which detects secondary vibration generated in the vibrator due to an angular velocity applied to the vibrator, and is configured to correct a sensor output by adding an offset value to the closed control loop of the secondary side control circuit, wherein
- the primary side control circuit and the secondary side control circuit are configured so that a function as the primary side control circuit and a function as the secondary side control circuit are interchangeable, and
- after interchanging the functions of the primary side control circuit and the secondary side control circuit, an offset value added to the closed control loop of the primary side control circuit after interchange and the offset value added to the closed control loop of the secondary side control circuit before interchange are symmetric values with respect to a predetermined reference value.
3 more elements
A vibration-type angular velocity sensor comprising:
- a vibrator;
- a primary side control circuit that has a closed control loop, an output of the closed control loop inducing primary vibration in the vibrator;
- and
- a secondary side control circuit that has a closed control loop which detects secondary vibration generated in the vibrator due to an angular velocity applied to the vibrator, and is configured to correct a sensor output by adding an offset value to the closed control loop of the secondary side control circuit, wherein
- a configuration is made so that a function of inducing the primary vibration and a function of detecting the secondary vibration are interchangeable, and
- after interchanging the functions of the primary side control circuit and the secondary side control circuit, an offset value added to the closed control loop of the primary side control circuit after interchange and the offset value added to the closed control loop of the secondary side control circuit before interchange are symmetric values with respect to a predetermined reference value.
3 more elements
Dependencies are inferred from the claim text.