YAW-RATE SENSOR
First Claim
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1. A yaw-rate sensor, comprising:
- a substrate having a main extension plane to detect a yaw rate about a first direction extending either parallel to the main extension plane or perpendicular to the main extension plane;
a drive device;
a first Coriolis mass, the drive device being configured to drive at least a part of the first Coriolis mass in a direction parallel to a drive direction extending perpendicular to the first direction, wherein in the case of a yaw rate about the first direction, at least the part of the first Coriolis mass undergoing a Coriolis acceleration parallel to a detection direction extending both perpendicular to the drive direction and perpendicular to the first direction; and
a first compensating mass having a coupling with the first Coriolis mass via a first connection to the substrate, such that a deflection of the first Coriolis mass in a direction parallel to the detection direction caused by a Coriolis acceleration leads to a deflection of the first compensating mass in opposite direction.
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Abstract
A yaw-rate sensor, having a substrate which has a main extension plane, for detecting a yaw rate about a first direction extending either parallel to the main extension plane or perpendicular to the main extension plane. The yaw-rate sensor has a drive device, a first Coriolis mass and a second Coriolis mass, the drive device being configured to drive at least one part of the first Coriolis mass and at least one part of the second Coriolis mass in a direction parallel to a drive direction extending perpendicular to the first direction.
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Citations
13 Claims
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1. A yaw-rate sensor, comprising:
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a substrate having a main extension plane to detect a yaw rate about a first direction extending either parallel to the main extension plane or perpendicular to the main extension plane; a drive device; a first Coriolis mass, the drive device being configured to drive at least a part of the first Coriolis mass in a direction parallel to a drive direction extending perpendicular to the first direction, wherein in the case of a yaw rate about the first direction, at least the part of the first Coriolis mass undergoing a Coriolis acceleration parallel to a detection direction extending both perpendicular to the drive direction and perpendicular to the first direction; and a first compensating mass having a coupling with the first Coriolis mass via a first connection to the substrate, such that a deflection of the first Coriolis mass in a direction parallel to the detection direction caused by a Coriolis acceleration leads to a deflection of the first compensating mass in opposite direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A yaw-rate sensor, comprising:
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a substrate having a main extension plane to detect a first yaw rate about a first direction extending parallel to the main extension plane and to detect a second yaw rate about a second direction extending parallel to the main extension plane, the first direction and the second direction extending perpendicular to each other; a drive device and a first Coriolis mass, the drive device being configured to drive the first Coriolis mass to a rotary oscillation about a direction extending perpendicular to the main extension plane, wherein in the case of a yaw rate about the first direction, a first partial area of the first Coriolis mass undergoing a Coriolis acceleration parallel to a detection direction extending perpendicular to the first direction and perpendicular to the main extension plane, a second partial area of the first Coriolis mass in the case of a yaw rate about the second direction undergoing a Coriolis acceleration parallel to the detection direction; a first compensating mass and a second compensating mass, the first compensating mass having a coupling with a first partial area of the first Coriolis mass via a first connection to the substrate and the second compensating mass having a coupling with a second partial area of the first Coriolis mass via a second connection to the substrate, such that a deflection of the first partial area of the first Coriolis mass in a direction parallel to the detection direction caused by a Coriolis acceleration leads to a deflection of the first compensating mass in opposite direction and a deflection of the second partial area of the first Coriolis mass in a direction parallel to the detection direction caused by a Coriolis acceleration leads to a deflection of the second compensating mass in opposite direction. - View Dependent Claims (13)
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Specification