US 10,502,569 B2Granted

Rotation rate sensor and method

AssigneeRobert Bosch GmbH

InventorsRobert Maul, Mirko Hattass, Christian Hoeppner

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Abstract

A rotation rate sensor includes a first rotationally suspended mass that exhibits a first axis of rotation. The first mass includes a first rotation-rate-measuring element that captures a first rate of rotation about the first axis of rotation and that outputs the first rate of rotation in a first signal. The sensor further includes a second rotationally suspended mass that exhibits a second axis of rotation and is arranged parallel to the first axis of rotation. The second mass includes a second rotation-rate-measuring element that captures a second rate of rotation about the second axis of rotation and that outputs the second rate of rotation in a second signal. The sensor further includes a propulsion device that propels the first and second mass and an evaluating device that outputs a difference of the signals as a third rate of rotation to be measured.

Claims17

Dependent claims

A rotation-rate sensor comprising:

a first rotationally suspended mass configured to exhibit a first axis of rotation, the first mass including a first rotation-rate-measuring element configured to capture a first rate of rotation about the first axis of rotation and to output the first rate of rotation in a first signal;
a second rotationally suspended mass configured to exhibit a second axis of rotation arranged spaced apart from and parallel to the first axis of rotation, the second mass including a second rotation-rate-measuring element configured to capture a second rate of rotation about the second axis of rotation and to output the second rate of rotation in a second signal;
a propulsion device configured to propel the first mass and the second mass such that the first mass and the second mass execute rotary motions in opposite directions;
and
an evaluating device configured to output a difference of the first and second signals of the first rotation-rate-measuring element and of the second rotation-rate-measuring element as a third rate of rotation to be measured.

2 more elements

A method for capturing a rate of rotation, comprising:

executing an oscillation about a first axis of rotation using a first rotationally suspended mass;
executing, using a second rotationally suspended mass, an oscillation, which is opposite to the oscillation of the first mass, about a second axis of rotation which is arranged spaced apart from and parallel to the first axis of rotation;
and
capturing a rate of rotation in a third axis of rotation, which is parallel to the first axis of rotation and to the second axis of rotation, using a difference formed from a signal of a first rotation-rate-measuring element arranged on the first mass, and a signal of a second rotation-rate-measuring element arranged on the second mass.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/568,766Filed 11 Mar 2016
Priority: DE 10 2015 207 85629 Apr 2015
Published: US 2018/0128614 A110 May 2018
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

G01C 19/5705
Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces: using masses driven in reciprocating…
G01C 19/574
Structural details or topology: the devices having two sensing masses in anti-phase motion
G01C
Measuring distances, levels or bearings

Family

US 2018/0128614 A1Pre-grant publication · published 10 May 2018
US 10,502,569 B2This patent

From the US filing history. Foreign family members aren’t listed.

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