WO2001063207A1 - Dispositif gyroscopique du type a detection d'acceleration - Google Patents
Dispositif gyroscopique du type a detection d'acceleration Download PDFInfo
- Publication number
- WO2001063207A1 WO2001063207A1 PCT/JP2001/001313 JP0101313W WO0163207A1 WO 2001063207 A1 WO2001063207 A1 WO 2001063207A1 JP 0101313 W JP0101313 W JP 0101313W WO 0163207 A1 WO0163207 A1 WO 0163207A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gyro
- rotor
- electrodes
- electrode
- displacement
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/14—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of gyroscopes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/02—Rotary gyroscopes
- G01C19/04—Details
- G01C19/16—Suspensions; Bearings
- G01C19/24—Suspensions; Bearings using magnetic or electrostatic fields
Definitions
- the gyro device consists of a thin disk-shaped gyro rotor 20 and such a gyro rotor 2.
- the coordinates of the gyro device are set as shown in the figure. Take the ⁇ axis upward along the central axis of the gyro device, and take the X axis and ⁇ axis perpendicular to it.
- the spin axis of the gyro rotor 20 is arranged along the ⁇ axis.
- a recess 23 B is formed outside the annular inner wall 23 A of the spacer 23.
- the recess 23 B is connected to the cavity 26 by a passage 23 C.
- the height of such passages 23C may be 2-3 m.
- a getter member 33 is disposed in such a concave portion 23B. Thereby, the cavity 26 can be maintained at a high degree of vacuum for a long time.
- the upper and lower surfaces of the gyro rotor 20 have annular electrode portions 200 A, 200 B, 200 C, 200 D and 200 A ', 200 B', and 200 Drive electrode portions 200E and 200E 'are formed inside C' and 200D '.
- Such a driving electrode portion 200E, 200E ' is formed between two concentric annular grooves 200d, 200e and 200d'200e'. It may be configured as a plurality of fan-shaped protrusions, and may be arranged in a line along the circumference in a ring.
- Displacement detecting electrode portions 200 F and 200 F ′ are formed inside the moving electrode portions 200 E and 200 E ′.
- Each electrostatic support electrode consists of a pair of combs.
- the electrostatic support electrode 2 23 formed on the inner surface of the upper bottom member 22 is shown. I have.
- the electrostatic support electrode 223 includes two comb-shaped portions 223 _1 and 223-2 separated from each other, and the two comb-shaped portions are separated from each other.
- the inner surface of the upper bottom member 22 and the lower bottom member 24 of the gyro case 21 has a central portion, that is, a displacement detection electrode 2 26.2 in the inside of the driving electrodes 2 25 and 2 35. 36 are formed.
- each circumferential portion is about 10 m and is formed at regular intervals at a pitch of about 20 ⁇ m, an annular area having a width of about 2 mm in the radial direction Approximately 100 circumferential portions are formed therein.
- Each electrode section of gyro mouth 20: 200 A, 200 B, 200 C, 200 D and 200 A ', 200 B', 200 C ', 20 0 D ′ is the circumference 2 2 3 of the corresponding electrostatic support electrode 2 2 3, 2 3 3,
- the corresponding first and third electrode portions 200 A and 200 C of the gyro rotor 20 have a second comb-shaped portion 2 2 1-2 (2 2 1 B, 2 2 1 D) and the corresponding second and third electrode sections 2 of the gyro rotor 20
- control DC voltage applied to the first combs 2 2 1-1 (2 2 1 A, 2 2 1 C) and the second combs 2 2 1-2 (2 2 1 B, 2 2 By setting the control DC voltage applied to 1D) to a voltage of the same magnitude and opposite polarity, for example, earth V 1A , the potential of the gyro rotor 20 can be always set to zero. This will be described again later with reference to FIG.
- the discharge combined temperature ° 1 2 7 1 2 8 limits the displacement of the gyro rotor 20 in the Z-axis direction, the X-axis direction and the Y-axis direction, and the gyro opening 20 is located on the inner surface of the gyro case 21. It is provided to prevent contact and at the same time discharge static electricity accumulated in the gyro rotor 20.
- a preamplifier 35 for example, a field-effect transistor, is disposed on the outer surface of the upper bottom member 22.
- a preamplifier 35 is provided with displacement detection electrodes 2 26, 2 Connected to 36.
- the upper bottom member 22 and the lower bottom member 24 are provided with through holes 22 A (only the through holes 22 A provided in the upper bottom member 22 are shown).
- the preamplifier 35 is connected to the displacement detecting electrodes 222 and 326 by the metal thin film formed on the inner surface. Further, as will be described later with reference to FIG. 3, the comb portions of each pair are electrically connected.
- the second and fourth pairs of electrostatic support electrodes arranged along the Y axis and the corresponding second and fourth portions P 2 and P 4 of the gyro rotor 20 are not shown, but are not shown in the drawing. It is arranged along the direction perpendicular to.
- FIG. Figure 4 shows an equivalent circuit of the constraint control system and the rotor drive system.
- the first and third pairs of electrostatic support electrodes 221, 231, and 23, 23, and the corresponding electrodes of the gyro mouth 20 Parts 200 0, 200A ', 200C, and 200C' are replaced with capacitors.
- the capacitance between the second electrode section 200 A and the second comb section 2 2 3 — 2 and the second and fourth electrode sections 200 B and 200 D Have the same capacitance C 3 A.
- the first comb-shaped portion 2 3 3 — 1 and the first and third electrode portions 200 A ′, 2 The capacitance between 0 C and the second comb-shaped part 2 3 3-2 and the second and
- a cross section of the gyro device of this example cut along the YZ plane is not shown, but the second and fourth pairs of electrostatic support electrodes 2 2 2, 2 3 2 and A similar argument holds for the second and fourth parts P 2 and P 4 of 2 24, 2 3 4 and the corresponding Gyroro 20.
- ⁇ X (1 4 1 A + _ I B-C 3 A to C 3 B)
- each electrostatic support electrode two combs 2 2 1-1 and 2 2 1 1 2 2 3 1-1 and 2 3 1-2 2 2 3-1 and 2 2 3-2 2 3 3-1 2 3 3 - 2, the polarity equal in magnitude to the contrary control patronage DC voltage earth V 1A, soil V 1 B, soil V 3 a, soil V 3 B is applied to one another. Therefore, the potential at the midpoint Q i Q 2 Q 3 Q 4 of the two pairs of capacitors (only Q 3 is shown in FIG. 4) is zero. That is, electrostatic support Since control DC voltages of the same magnitude and different polarities are applied to the comb portions of each pair of poles, the potential of the gyro rotor 20 is zero.
- a displacement detection AC current i P is generated at the displacement detection electrodes 222, 236.
- the displacement detection AC current i P is represented by the following equation.
- V P (X) ⁇ ⁇ X ⁇ X ⁇ 0 ⁇ , ⁇ X s i ⁇ ( ⁇ ⁇ t + i)
- K V1 to K V5 are the capacitance c of the capacitor. , C FA , and C FB .
- the output voltage VP independently includes all the displacements of the gyro rotor 20. Therefore, if a desired voltage component is extracted from the equation (9), a corresponding displacement can be obtained. For example, even when two or more linear displacements ⁇ , ⁇ , mm and rotational displacements ⁇ 0, ⁇ overlap, each displacement can be obtained by extracting the corresponding voltage component. Further, the formula output voltage VP linear displacement ⁇ ⁇ , ⁇ ⁇ , ⁇ ⁇ and rotational displacement delta, amplitude modulated by the displacement detecting frequency ⁇ Omega 5 corresponding to delta ⁇
- V 1 ⁇ V 0 + ⁇ V!
- V 2 ⁇ V 0 + ⁇ V 2 ⁇
- V 4 ⁇ V. + ⁇ V 4 ⁇
- V 1 ⁇ and V 1 ⁇ are the control DC voltage applied to the first pair of electrostatic support electrodes 2 2 1 and 2 3 1
- V 2 ⁇ and V 2 ⁇ are the second pair of electrostatic support electrodes 2 2 2 and 2
- V 3A and V 3B are the third pair of electrostatic support electrodes 2 2 3 2 3 2 3 DC voltage for control applied to 3 3
- V 4A and V 4B are the fourth This is a control DC voltage applied to the pair of electrostatic support electrodes 222, 234.
- the rotor drive system of the present embodiment includes drive electrode portions 20 GE and 20 G formed on the upper and lower surfaces of the gyro rotor 20.
- the drive electrode portions 200E and 200E 'of this example and the drive electrodes 222 and 235 constitute a three-phase electrode.
- the upper drive electrode portion 200E of the gyro rotor 20 includes four fan-shaped portions separated from each other by a central angle of 90 °, and the lower drive electrode portion 200E. 2 0 0 E 'are 90 to each other. Includes four sectors separated by a central angle of
- the drive electrode section 200E on the upper side of the gyro rotor 20 has four sector sections 200E separated from each other at a central angle of 90 °.
- a gyro rotor having a spin axis in the central axis direction, which is supported in a non-contact manner by an electrostatic supporting force inside the gyro mouth case; and a gyro rotor arranged at a distance from the gyro mouth to control voltage.
- a plurality of electrostatic support electrodes configured to be applied;
- a constrained control system having a feedback loop that corrects the control voltage so that the displacement detected by the displacement detection system becomes zero.
- -It has a plurality of rotor driving electrodes provided corresponding to the upper and lower surfaces of the evening, and the gyro rotor is provided with a plurality of through holes for connecting the upper surface and the lower surface thereof. Of the rotor It is provided corresponding to the driving electrode.
- the displacement detection system in the gyro device, has a plurality of displacement detection electrodes spaced apart from the gyro opening, and the displacement detection system is superimposed on the control voltage.
- a detection AC voltage is applied to the electrostatic support electrode, a displacement detection current generated in the displacement detection electrode is detected by the displacement detection AC voltage, and a displacement of the gyro rotor is calculated. Is configured.
- the plurality of displacement detection AC voltages are configured to be AC voltages having different frequencies.
- FIG. 8 is an explanatory diagram for explaining a control loop of the gyro device of the present invention.
- FIG. 9 is a diagram showing the electrodes of the gyro apparatus according to the present invention and the voltages applied thereto.
- FIG. 10 is a diagram showing the electrodes of the gyro apparatus according to the present invention and the voltages applied thereto.
- wall-shaped displacement detection electrodes 336, 3466 arranged facing the inner peripheral surface 20C and the outer peripheral surface 20D of the gyro rotor 20, and the upper surface 2 of the gyro rotor 20.
- the upper and lower displacement detection electrodes 316 and 326 arranged so as to face 0 A and the lower surface 20 B are arranged at the same angular position on the circumference.
- the gyro rotor 20 is formed of a conductive material.
- a conductive material For example, single-crystal silicon (silicon) may be used as such a conductive material.
- silicon silicon
- the wall-shaped electrodes and the spacers 23 arranged to face the inner peripheral surface 20 C and the outer peripheral surface 20 D of the gyro rotor 20 are formed of the same material as the gyro opening 20. May be.
- the displacement detecting circuit for converting the Re their detects a displacement detection current i P in the displacement detection voltage V P, namely, the pre-amplifier 35 and such displacement detection control direct current by inputting a use voltage V P ⁇ V 1A ⁇ earth V 4A, soil V 1 B ⁇ earth V 4B, soil V lc ⁇ earth V 4 C, the control operation that generates a soil V 1D ⁇ earth V 4D And a part 140.
- FIG. 9 shows the electrodes formed on the upper bottom member 22 of the gyro case and the voltage applied to them.
- FIG. 11 shows an equivalent circuit of the gyro rotor 20 of the gyro device of the present example and the electrodes provided correspondingly.
- the gyro rotor 20 and the electrodes provided corresponding thereto constitute a capacitor. Therefore, this equivalent circuit is obtained by replacing the gyro rotor 20 and the electrodes with capacitors.
- Each of 3 4 4 has a control DC voltage of the same magnitude and opposite polarity for each control soil voltage V 1A to soil V 4A , soil V 1B to soil V 4B , soil V 1C to person v 4C , earth V 1D to earth V
- ⁇ ⁇ (1/4 C 0 r) ( ⁇ 2 C 2 D + C 4 C — 4 D)
- a displacement detection current i P is generated at the displacement detection electrodes 3 16, 3 26, and 3 3 6 3 4 6.
- the gyro rotor 20 is linearly displaced by ⁇ in the X-axis direction, linearly displaced by ⁇ in the Y-axis direction, linearly displaced by ⁇ Z in the Z-axis direction, and rotationally displaced by a rotation angle ⁇ around the Y-axis.
- the rotational current around the X axis by the rotation angle ⁇ , the displacement detection AC current is expressed by the following formula
- i P KI (EXCX + EYC. r AY + 2 EZC c ⁇ Z + E ⁇ C ⁇ ⁇ ⁇ +
- control operation unit 140 calculates the control DC voltage to input displacement detection AC voltage V P.
- the control DC voltage is expressed by the following equation.
- V 1A V + ⁇ V 1A
- FIG. 8 The rotor drive system in this example is
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001234129A AU2001234129A1 (en) | 2000-02-23 | 2001-02-22 | Acceleration detection type gyro device |
EP01906216.5A EP1275934B1 (en) | 2000-02-23 | 2001-02-22 | Acceleration detection type gyro device |
US10/204,659 US6668648B2 (en) | 2000-02-23 | 2001-02-23 | Acceleration detection type gyro device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-46215 | 2000-02-23 | ||
JP2000046215A JP4583538B2 (ja) | 2000-02-23 | 2000-02-23 | ジャイロ装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001063207A1 true WO2001063207A1 (fr) | 2001-08-30 |
Family
ID=18568679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/001313 WO2001063207A1 (fr) | 2000-02-23 | 2001-02-22 | Dispositif gyroscopique du type a detection d'acceleration |
Country Status (6)
Country | Link |
---|---|
US (1) | US6668648B2 (ja) |
EP (1) | EP1275934B1 (ja) |
JP (1) | JP4583538B2 (ja) |
KR (1) | KR100819967B1 (ja) |
AU (1) | AU2001234129A1 (ja) |
WO (1) | WO2001063207A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100350215C (zh) * | 2004-04-29 | 2007-11-21 | 上海交通大学 | 利用静电和电荷驰豫工作的悬浮转子mems微陀螺 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE487113T1 (de) * | 2002-09-02 | 2010-11-15 | Ecole Polytech | System zur diamagnetischen levitation |
KR100693347B1 (ko) * | 2003-10-13 | 2007-03-09 | 삼성전자주식회사 | 디지털 회전형 각속도 검출장치 |
US7270203B2 (en) * | 2004-02-09 | 2007-09-18 | Ut-Battelle, Llc | Electric machine for hybrid motor vehicle |
US8045009B2 (en) * | 2004-05-10 | 2011-10-25 | Hewlett-Packard Development Company, L.P. | Image-exposure systems and methods using detecting motion of a camera to terminate exposure |
CN100398993C (zh) * | 2004-05-20 | 2008-07-02 | 上海交通大学 | 静电悬浮转子微惯性传感器及其制造方法 |
US7426859B2 (en) * | 2004-10-29 | 2008-09-23 | Archangel Systems, Inc. | Motion sensor and method for detecting motion |
CN100392354C (zh) * | 2005-06-30 | 2008-06-04 | 上海交通大学 | 软磁吸悬高速旋转刚体微陀螺 |
JP4822877B2 (ja) | 2006-03-01 | 2011-11-24 | 東京計器株式会社 | 静電浮上型ジャイロ装置 |
FR2902870B1 (fr) * | 2006-06-23 | 2008-09-05 | Thales Sa | Dispositif d'amelioration de la duree de vie d'un gyrometre triaxial |
US7946174B2 (en) * | 2007-12-07 | 2011-05-24 | METAMEMS Corp. | Decelerometer formed by levitating a substrate into equilibrium |
US8018009B2 (en) | 2007-12-07 | 2011-09-13 | METAMEMS Corp. | Forming large planar structures from substrates using edge Coulomb forces |
US7863651B2 (en) | 2007-12-07 | 2011-01-04 | METAMEMS Corp. | Using multiple coulomb islands to reduce voltage stress |
US8531848B2 (en) | 2007-12-07 | 2013-09-10 | METAMEMS Corp. | Coulomb island and Faraday shield used to create adjustable Coulomb forces |
US8159809B2 (en) | 2007-12-07 | 2012-04-17 | METAMEMS Corp. | Reconfigurable system that exchanges substrates using coulomb forces to optimize a parameter |
US8008070B2 (en) | 2007-12-07 | 2011-08-30 | METAMEMS Corp. | Using coulomb forces to study charateristics of fluids and biological samples |
US7728427B2 (en) | 2007-12-07 | 2010-06-01 | Lctank Llc | Assembling stacked substrates that can form cylindrical inductors and adjustable transformers |
US7965489B2 (en) | 2007-12-07 | 2011-06-21 | METAMEMS Corp. | Using coulomb forces to form 3-D reconfigurable antenna structures |
US7812336B2 (en) | 2007-12-07 | 2010-10-12 | METAMEMS Corp. | Levitating substrate being charged by a non-volatile device and powered by a charged capacitor or bonding wire |
CN101216309B (zh) * | 2008-01-10 | 2010-06-02 | 上海交通大学 | 圆形及多环形轴向充磁永磁反磁转子静电旋转微陀螺 |
JP5199720B2 (ja) * | 2008-04-15 | 2013-05-15 | 東京計器株式会社 | 静電浮上型ジャイロ装置 |
CN104215241B (zh) * | 2014-09-02 | 2017-07-04 | 常州巴乌克智能科技有限公司 | 惯性传感装置 |
CN106872730B (zh) * | 2017-05-04 | 2019-07-02 | 三峡大学 | 一种加速度测量装置及方法 |
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US4061043A (en) * | 1976-03-29 | 1977-12-06 | John Callender Stiles | Electrostatic rate gyroscope |
US5353656A (en) * | 1992-08-18 | 1994-10-11 | Satcon Technology Corporation | Electrostatically controlled micromechanical gyroscope |
US5920983A (en) * | 1995-05-24 | 1999-07-13 | Tokimec Inc. | Acceleration-detecting type gyro and manufacturing method thereof |
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JPS5927216A (ja) * | 1982-08-06 | 1984-02-13 | Furuno Electric Co Ltd | ジヤイロコンパス |
FR2543673B1 (fr) * | 1983-04-01 | 1986-04-11 | Sfim | Appareil gyroscopique ou gyrometrique, notamment gyroaccelerometre, a suspension souple et sustentation electrostatique |
JPS62297702A (ja) * | 1986-06-18 | 1987-12-24 | Hitachi Ltd | 浮上量変動測定用スライダ |
US5650568A (en) * | 1993-02-10 | 1997-07-22 | The Charles Stark Draper Laboratory, Inc. | Gimballed vibrating wheel gyroscope having strain relief features |
JPH06284759A (ja) * | 1993-03-29 | 1994-10-07 | Canon Inc | 微小回転アクチュエータおよびその製造方法 |
EP0819337B1 (en) * | 1995-04-06 | 2001-03-21 | The University Of Sheffield | Improvements in or relating to levitation systems and methods |
JP3008074B2 (ja) * | 1995-05-24 | 2000-02-14 | 株式会社トキメック | ジャイロ装置及びその製造方法 |
-
2000
- 2000-02-23 JP JP2000046215A patent/JP4583538B2/ja not_active Expired - Lifetime
-
2001
- 2001-02-22 EP EP01906216.5A patent/EP1275934B1/en not_active Expired - Lifetime
- 2001-02-22 KR KR1020027010977A patent/KR100819967B1/ko active IP Right Grant
- 2001-02-22 AU AU2001234129A patent/AU2001234129A1/en not_active Abandoned
- 2001-02-22 WO PCT/JP2001/001313 patent/WO2001063207A1/ja active Application Filing
- 2001-02-23 US US10/204,659 patent/US6668648B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4061043A (en) * | 1976-03-29 | 1977-12-06 | John Callender Stiles | Electrostatic rate gyroscope |
US5353656A (en) * | 1992-08-18 | 1994-10-11 | Satcon Technology Corporation | Electrostatically controlled micromechanical gyroscope |
US5920983A (en) * | 1995-05-24 | 1999-07-13 | Tokimec Inc. | Acceleration-detecting type gyro and manufacturing method thereof |
Non-Patent Citations (1)
Title |
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See also references of EP1275934A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100350215C (zh) * | 2004-04-29 | 2007-11-21 | 上海交通大学 | 利用静电和电荷驰豫工作的悬浮转子mems微陀螺 |
Also Published As
Publication number | Publication date |
---|---|
AU2001234129A1 (en) | 2001-09-03 |
EP1275934B1 (en) | 2016-01-13 |
KR100819967B1 (ko) | 2008-04-07 |
EP1275934A4 (en) | 2006-06-28 |
EP1275934A1 (en) | 2003-01-15 |
JP4583538B2 (ja) | 2010-11-17 |
KR20020097183A (ko) | 2002-12-31 |
US20030121328A1 (en) | 2003-07-03 |
US6668648B2 (en) | 2003-12-30 |
JP2001235329A (ja) | 2001-08-31 |
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