KR20130142116A - 단일 구동 모드를 가진 미세기계화 모노리식 3축 자이로스코프 - Google Patents
단일 구동 모드를 가진 미세기계화 모노리식 3축 자이로스코프 Download PDFInfo
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Abstract
Description
도 1은 3 자유도(3-DOF)의 관성 측정 유닛(IMU)의 개략적인 단면을 나타낸다.
도 2는 3축 자이로스코프의 예를 나타낸다.
도 3은 구동 운동에서의 3축 자이로스코프의 예를 나타낸다.
도 4는 x축을 중심으로 하는 회전에 따른 감지 운동 중의 단일 프루프 매스를 포함하는 3축 자이로스코프의 예를 나타낸다.
도 5는 y축을 중심으로 하는 회전에 따른 감지 운동 중의 단일 프루프 매스를 포함하는 3축 자이로스코프의 예를 나타낸다.
도 6은 z축을 중심으로 하는 회전에 따른 감지 운동 중의 단일 프루프 매스를 포함하는 3축 자이로스코프의 예를 나타낸다.
도 7 및 8은 역위상 운동 및 동위상 운동 중의 z축 자이로스코프 결합 플렉셔 베어링을 포함하는 3축 자이로스코프의 예를 나타낸다.
도 9는 3축 가속도계의 예를 나타낸다.
도 10은 x축 가속도에 따른 감지 운동에서의 3축 가속도계의 예를 나타낸다.
도 11은 y축 가속도에 따른 감지 운동에서의 3축 가속도계의 예를 나타낸다.
도 12는 z축 가속도에 따른 감지 운동에서의 3축 가속도계의 예를 나타낸다.
도 13은 비아 웨이퍼 전극 배치를 포함하는 시스템의 예를 나타낸다.
도 14는 단일 프루프 매스를 포함하는 3축 가속도계의 측면을 나타낸다.
도 15는 3+3 자유도(3+3 DOF) 관성 측정 유닛(IMU)의 예를 나타낸다.
도 16은 앵커의 주위에 고정된 중앙 서스펜션의 예를 나타낸다.
도 17은 구동 운동에서의 중앙 서스펜션의 일부의 예를 나타낸다.
Claims (20)
- x-y 평면에 형성된 단일 프루프 매스 3축 자이로스코프(single proof-mass 3-axis gyroscope)를 구비하는 디바이스 층(device layer);
상기 디바이스 층의 제1 면에 접착된 캡 웨이퍼(cap wafer); 및
상기 디바이스 층의 제2 면에 접착된 비아 웨이퍼(via wafer)를 포함하며,
상기 단일 프루프 매스 3축 자이로스코프는,
단일의 중앙 앵커의 주위에 현가되어 있고, 상기 3축 자이로스코프의 에지부를 향해 바깥쪽으로 연장된 방사형 부분(radial portion)을 포함하는 메인 프루프 매스 부분(main proof-mass section);
상기 단일의 중앙 앵커로부터 상기 3축 자이로스코프를 현가하도록 구성된 중앙 서스펜션 시스템(central suspension system); 및
가동 부분 및 정지 부분을 구비하는 구동 전극(drive electrode)을 포함하며,
상기 가동 부분은 상기 방사형 부분에 결합되어 있고,
상기 구동 전극과 상기 중앙 서스펜션 시스템은 상기 3축 자이로스코프를 상기 x-y 평면에 대해 법선 방향인 z축을 중심으로 구동 주파수(drive frequency)로 진동시키도록 구성되고,
상기 캡 웨이퍼와 상기 비아 웨이퍼는 상기 단일 프루프 매스 3축 자이로스코프를 캡슐화하도록 구성된, 관성 측정 시스템. - 제1항에 있어서,
z축 각 운동(z-axis angular motion)에 응답해서 x축을 따라 역위상(anti-phase)으로 이동하도록 구성된 대칭적인 x축 프루프 매스 부분들(symmetrical x-axis proof-mass sections)을 포함하는 관성 측정 시스템. - 제2항에 있어서,
상기 x축 프루프 매스 부분을 결합시키고 상기 x축 프루프 매스 부분들 사이의 동위상 운동(in-phase motion)을 방해하도록 구성된 z축 자이로스코프 결합 플렉셔 베어링(a z-axis gyroscope coupling flexure bearing)을 포함하는 관성 측정 시스템. - 제1항에 있어서,
상기 디바이스 층의 면외에 있으며, x축 각 회전(angular rotation)과 y축 각 회전을 검출하도록 구성된 면외 전극을 포함하는 관성 측정 시스템. - 제4항에 있어서,
상기 면외 전극은 상기 비아 웨이퍼 상에 위치한 것인, 관성 측정 시스템. - 제1항에 있어서,
상기 구동 전극은 복수의 정지 핑거(stationary finger)와 연계된 복수의 가동 핑거(moving finger)를 포함하며, 상기 정지 핑거는 상기 비아 웨이퍼에 고정된, 관성 측정 시스템. - 제1항에 있어서,
상기 디바이스 층은 x-y 평면에서 상기 3축 자이로스코프에 인접해서 형성된 3축 가속도계(3-axis accelerometer)를 포함하며,
상기 캡 웨이퍼 및 상기 비아 웨이퍼는 상기 3축 가속도계와 상기 3축 자이로스코프를 동일 캐비티 내에 캡슐화하도록 구성된 것인, 관성 측정 시스템. - 제1항에 있어서,
상기 디바이스 층은 x-y 평면에 형성된 단일 프루프 매스 3축 가속도계(single proof-mass 3-axis accelerometer)를 포함하며, 상기 단일 프루프 매스 3축 가속도계는 단일의 중앙 앵커 주위에 현가되며, 상기 단일 프루프 매스 3축 가속도계는 별개의 x, y, 및 z축 플렉셔 베어링을 포함하며,
상기 x 및 y축 플렉셔 베어링은 상기 단일의 중앙 앵커를 중심으로 대칭을 이루고 있으며, 상기 z축 플렉셔 베어링은 상기 단일의 중앙 앵커를 중심으로 대칭을 이루고 있지 않은 것인, 관성 측정 시스템. - 제8항에 있어서,
상기 캡 웨이퍼 및 상기 비아 웨이퍼는 상기 3축 가속도계와 상기 3축 자이로스코프를 동일 캐비티 내에 캡슐화하도록 구성된 것인, 관성 측정 시스템. - 제8항에 있어서,
상기 3축 가속도계는 면내 x축 및 y축 가속도계 감지 전극(in-plane x and y-axis accelerometer sense electrode)을 포함하는, 관성 측정 시스템. - 제10항에 있어서,
상기 면내 x축 및 y축 가속도계 감지 전극은 상기 단일의 중앙 앵커를 중심으로 서로 대칭을 이루고 있는 것인, 관성 측정 시스템. - 제11항에 있어서,
상기 3축 가속도계는 면외 z축 가속도계 감지 전극(out-of-plane z-axis accelerometer sense electrode)을 포함하는, 관성 측정 시스템. - 제8항에 있어서,
상기 3축 가속도계는 x축이나 z축보다 y축 주위로 더 긴 형상의 직사각형인 것인, 관성 측정 시스템. - 제8항에 있어서,
상기 x, y, 및 z축 플렉셔 베어링은 높은 면외 강성(out-of-plane stiffness)을 갖는 것인, 관성 측정 시스템. - 제8항에 있어서,
상기 단일 프루프 매스는 면내 x 및 y축 가속도계 감지 전극과 x, y, 및 z축 플렉셔 베어링을 둘러싸는 외측부(outer portion)를 포함하는, 관성 측정 시스템. - 미세기계화 모노리식 관성 센서 장치에 있어서,
디바이스 층의 x-y 평면에 형성된 단일 프루프 매스 3축 자이로스코프를 포함하며,
상기 단일 프루프 매스 3축 자이로스코프는,
단일의 중앙 앵커 주위에 현가되어, 상기 3축 자이로스코프의 에지부를 향해 바깥쪽으로 연장된 방사형 부분을 구비하는 메인 프루프 매스 부분;
상기 단일의 중앙 앵커로부터 상기 3축 자이로스코프를 현가하도록 구성된 중앙 서스펜션 시스템; 및
가동 부분과 정지 부분을 구비하는 구동 전극을 포함하며,
상기 가동 부분은 상기 방사형 부분에 결합되고, 상기 구동 전극과 상기 중앙 서스펜션 시스템은 상기 3축 자이로스코프를 x-y 평면에 대해 법선 방향인 z축을 중심으로 구동 주파수로 진동시키도록 구성된, 관성 센서 장치. - 제16항에 있어서,
z축 각 운동에 응답해서 x축을 따라 역위상으로 이동하도록 구성된 대칭적인 x축 프루프 매스 부분을 포함하는 관성 센서 장치. - 제16항에 있어서,
상기 관성 센서 장치는, 단일의 중앙 앵커 주위에 현가된 상기 3축 자이로스코프에 인접하는 상기 디바이스 층의 x-y 평면에 형성되고, 별개의 x, y, 및 z축 플렉셔 베어링을 구비하는 단일 프루프 매스 3축 가속도계를 더 포함하며,
상기 x축 및 y축 플렉셔 베어링은 상기 단일의 중앙 앵커를 중심으로 대칭을 이루고 있으며, 상기 z축 플렉셔 베어링은 상기 단일의 중앙 앵커를 중심으로 대칭을 이루고 있지 않은 것인, 관성 센서 장치. - 제18항에 있어서,
상기 3축 가속도계는,
상기 단일의 중앙 앵커를 중심으로 대칭을 이루는 면내 x축 및 y축 가속도계 감지 전극; 및
면외 z축 가속도계 감지 전극을 포함하는, 관성 센서 장치. - 제19항에 있어서,
상기 관성 센서 장치는,
상기 디바이스 층의 제1 면에 접착된 캡 웨이퍼; 및
상기 디바이스 층의 제2 면에 접착된 비아 웨이퍼를 더 포함하며,
상기 캡 웨이퍼와 상기 비아 웨이퍼는 상기 3축 자이로스코프 및 상기 3축 가속도계를 동일 캐비티 내에 캡슐화하도록 구성된, 관성 센서 장치.
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| US38424610P | 2010-09-18 | 2010-09-18 | |
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| US61/384,246 | 2010-09-18 | ||
| US61/384,245 | 2010-09-18 | ||
| PCT/US2011/052065 WO2012037540A2 (en) | 2010-09-18 | 2011-09-18 | Micromachined monolithic 3-axis gyroscope with single drive |
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| KR1020177025834A Division KR101904178B1 (ko) | 2010-09-18 | 2011-09-18 | 단일 구동 모드를 가진 미세기계화 모노리식 3축 자이로스코프 |
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| KR1020137009789A Expired - Fee Related KR101779998B1 (ko) | 2010-09-18 | 2011-09-18 | 단일 구동 모드를 가진 미세기계화 모노리식 3축 자이로스코프 |
| KR1020137009790A Active KR101352827B1 (ko) | 2010-09-18 | 2011-09-18 | 단일 프루프 매스를 가진 미세기계화 3축 가속도계 |
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| EP (2) | EP2616822B1 (ko) |
| KR (3) | KR101904178B1 (ko) |
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| WO2012037539A9 (en) | 2012-04-26 |
| EP2616772B1 (en) | 2016-06-22 |
| US20160264404A1 (en) | 2016-09-15 |
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| EP2616822B1 (en) | 2015-07-01 |
| KR20130061181A (ko) | 2013-06-10 |
| KR101779998B1 (ko) | 2017-09-19 |
| US20130247666A1 (en) | 2013-09-26 |
| CN103221778A (zh) | 2013-07-24 |
| WO2012037540A2 (en) | 2012-03-22 |
| US9455354B2 (en) | 2016-09-27 |
| US9246018B2 (en) | 2016-01-26 |
| CN103238075B (zh) | 2015-11-25 |
| CN103238075A (zh) | 2013-08-07 |
| US10050155B2 (en) | 2018-08-14 |
| CN103221778B (zh) | 2016-03-30 |
| KR101904178B1 (ko) | 2018-10-04 |
| WO2012037539A1 (en) | 2012-03-22 |
| KR20170108170A (ko) | 2017-09-26 |
| US20130328139A1 (en) | 2013-12-12 |
| KR101352827B1 (ko) | 2014-01-17 |
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