WO2005015128A1 - Resonateur, notamment pour gyroscope vibrant - Google Patents
Resonateur, notamment pour gyroscope vibrant Download PDFInfo
- Publication number
- WO2005015128A1 WO2005015128A1 PCT/FR2004/001641 FR2004001641W WO2005015128A1 WO 2005015128 A1 WO2005015128 A1 WO 2005015128A1 FR 2004001641 W FR2004001641 W FR 2004001641W WO 2005015128 A1 WO2005015128 A1 WO 2005015128A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shell
- thickness
- resonator
- internal surface
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
-
- 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
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
- G01C19/567—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode
- G01C19/5691—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode of essentially three-dimensional [3D] vibrators, e.g. wine glass-type vibrators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/10—High frequency vibratory devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/12—Gyroscopes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/12—Gyroscopes
- Y10T74/1229—Gyroscope control
Definitions
- the present invention relates to a resonator in particular for use in a gyroscope.
- a hemispherical resonant gyroscope usually comprises a hemispherical silica resonator comprising a shell having a pole fixed to a support rod, the shell comprising an annular edge delimited by a hemispherical internal surface and a hemispherical external surface concentric so that the shell has a constant thickness from the pole to the annular edge.
- the models for producing these surfaces are well known and it is therefore possible to machine them with great precision.
- a hull of constant thickness has the disadvantage of having a modal mass, that is to say an effective mass, less than 20% of the total mass of the hull. This therefore does not take full advantage of the very low damping of the silica.
- An increase in modal mass has the advantage of reducing the effects of parasitic damping, in particular the damping resulting from metallization; reduce the relative effect of geometric machining faults; and increase the momentum of the vibration. It has been envisaged for this to increase the thickness of the shell while keeping it constant. However, a homogeneous increase in the thickness of the shell causes an increase in the resonant frequency in the same proportions as the increase in modal mass so that the overall performance is not satisfactory. Furthermore, for reasons independent of the increase in modal mass, it has been proposed in document FR-A-2 792 722 to increase the thickness of the shell near the annular edge.
- An object of the invention is to provide a resonator having a higher modal mass than conventional resonators while retaining a relatively low operating frequency and great ease of machining.
- a resonator comprising a shell having a pole fixed to a support rod, the shell comprising an annular edge delimited by an internal surface and a homothetic external surface. from each other and extending around the same axis of revolution, in which the internal surface and the external surface are offset with respect to each other on the axis of revolution so that the along the annular edge the shell has a thickness greater than a thickness at the pole.
- the internal surface and the external surface are in the form of spherical cap.
- the difference in thickness between the edge and the pole is thus obtained by a simple offset of the centers of the spherical caps on the axis of revolution.
- the resonator comprises in a manner known per se a shell 1 which in the illustrated example is a substantially hemispherical shell having a pole 2 fixed to a support rod 3.
- the shell 1 has an annular edge 4, delimited by a plane P intersecting an internal surface 5 and an external surface 6 perpendicular to an axis of revolution R.
- the dashed lines illustrate the shape of the shell obtained when the internal surface 5 and external surface 6 are two hemispherical surfaces both centered at the point of intersection of the axis of revolution R, and of the plane P containing the edge of the shell.
- the shell then has a constant thickness and the modal mass is therefore low as indicated above.
- the internal surface 5 is in the form of a spherical cap whose center C1 is offset towards the inside of the shell relative to the plane P containing the edge of the shell.
- the external surface 6 is also in the form of a spherical cap whose center C2 is offset beam towards the outside of the shell with respect to the plane P.
- the desired variation in the thickness of the shell is obtained.
- a resonator having a diameter of 20 mm and a thickness of 0.7 mm it is possible to produce a shell retaining a thickness of 0.7 mm in the vicinity of the pole and having along the edge a thickness twice the thickness in the vicinity of the pole which has the effect of doubling the modal mass while achieving an increase of only 30% in the resonant frequency of the resonator.
- the resonator according to the invention has been illustrated with an internal surface and an external spherical surface, the resonator can be made with other surfaces of revolution, in particular parabolic or elliptical surfaces although the spherical surface has greater ease of machining.
- the invention has been illustrated with an inner surface whose center C is offset inwardly of the cap and an outer surface whose center C2 is displaced outwardly of the cap, it is possible 'to make the resonator according to the invention by making different offsets.
- the structure making it possible to obtain the maximum modal mass for a given mass of the shell would consist in producing the external surface 6 in the form of a half-sphere whose center C2 is placed in the plane P and of shifting the center Cl of the internal surface 5 of the distance d inwards.
- the internal surface 5 is greater than a hemisphere so that the edge zone of the internal surface 5 is, slightly reentrant. It can also be made cylindrical on a height by appropriate machining. In practice, the optimum compromise is obtained with spherical caps close to a half-sphere, the centers of the internal surface and of the external surface being arranged on either side of the plane P containing the annular edge 4, as illustrated on the face.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04767487A EP1644703B1 (fr) | 2003-07-10 | 2004-06-28 | Resonateur pour gyroscope vibrant |
| CA2531516A CA2531516C (fr) | 2003-07-10 | 2004-06-28 | Resonateur, notamment pour gyroscope vibrant |
| JP2006518260A JP4309424B2 (ja) | 2003-07-10 | 2004-06-28 | 特に振動ジャイロ用の共振器 |
| AT04767487T ATE477471T1 (de) | 2003-07-10 | 2004-06-28 | Resonator für ein schwingungsgyroskop |
| DE602004028623T DE602004028623D1 (de) | 2003-07-10 | 2004-06-28 | Resonator für ein schwingungsgyroskop |
| US10/562,640 US7694595B2 (en) | 2003-07-10 | 2004-06-28 | Resonator particularly for a vibrating gyroscope |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0308465 | 2003-07-10 | ||
| FR0308465A FR2857445B1 (fr) | 2003-07-10 | 2003-07-10 | Resonateur, notamment pour gyroscope vibrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005015128A1 true WO2005015128A1 (fr) | 2005-02-17 |
Family
ID=33522939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2004/001641 Ceased WO2005015128A1 (fr) | 2003-07-10 | 2004-06-28 | Resonateur, notamment pour gyroscope vibrant |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US7694595B2 (fr) |
| EP (1) | EP1644703B1 (fr) |
| JP (1) | JP4309424B2 (fr) |
| KR (1) | KR101035884B1 (fr) |
| CN (1) | CN100526806C (fr) |
| AT (1) | ATE477471T1 (fr) |
| CA (1) | CA2531516C (fr) |
| DE (1) | DE602004028623D1 (fr) |
| ES (1) | ES2350344T3 (fr) |
| FR (1) | FR2857445B1 (fr) |
| RU (1) | RU2298766C2 (fr) |
| WO (1) | WO2005015128A1 (fr) |
| ZA (1) | ZA200600122B (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2936049B1 (fr) * | 2008-09-16 | 2010-09-17 | Sagem Defense Securite | Resonateur a metallisation partielle pour detecteur de parametre angulaire. |
| FR2952426B1 (fr) * | 2009-11-12 | 2012-10-05 | Sagem Defense Securite | Resonateur a couche metallisee partielle |
| FR2952427B1 (fr) * | 2009-11-12 | 2012-02-24 | Sagem Defense Securite | Resonateur comportant une couche de passivation, capteur vibrant comportant un tel resonateur et procede de fabrication |
| CN104215235B (zh) * | 2013-06-05 | 2017-08-22 | 北京信息科技大学 | 一种新型钟形振子式角速率陀螺 |
| US10119820B2 (en) | 2015-02-10 | 2018-11-06 | Northrop Grumman Systems Corporation | Wide rim vibratory resonant sensors |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2063128A1 (fr) * | 1969-07-18 | 1971-07-09 | Gen Motors Corp | |
| EP0141621A2 (fr) * | 1983-10-31 | 1985-05-15 | General Motors Corporation | Capteur de rotation à vibrations |
| FR2792722A1 (fr) * | 1999-04-23 | 2000-10-27 | Sagem | Capteur gyroscopique et appareil de mesure de rotation en comportant application |
| FR2805039A1 (fr) * | 2000-02-15 | 2001-08-17 | Sagem | Capteur gyroscopique |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150580A (en) * | 1978-03-06 | 1979-04-24 | Newport Plastics, Inc. | Gyroscopic exerciser |
| US4951508A (en) * | 1983-10-31 | 1990-08-28 | General Motors Corporation | Vibratory rotation sensor |
| US5712427A (en) * | 1995-08-29 | 1998-01-27 | Litton Systems Inc. | Vibratory rotation sensor with scanning-tunneling-transducer readout |
| US5763780A (en) * | 1997-02-18 | 1998-06-09 | Litton Systems, Inc. | Vibratory rotation sensor with multiplex electronics |
| RU2164006C2 (ru) * | 1999-05-21 | 2001-03-10 | Акционерное общество открытого типа "Московский институт электромеханики и автоматики" | Волновой твердотельный гироскоп |
| RU2166734C1 (ru) * | 2000-06-05 | 2001-05-10 | Химический факультет МГУ им. М.В. Ломоносова | Чувствительный элемент волнового твердотельного гироскопа |
| RU2207510C2 (ru) * | 2001-07-19 | 2003-06-27 | Федеральное государственное унитарное предприятие "Ижевский электромеханический завод "Купол" | Твердотельный волновой гироскоп |
| TW494777U (en) * | 2001-11-23 | 2002-07-11 | Yung-Yu Juang | Structure of enclosure for device for training strength of wrist |
| US7033304B2 (en) * | 2002-09-27 | 2006-04-25 | Yun Yu Chuang | Actuating device of wrist exerciser |
| US6942605B1 (en) * | 2003-12-09 | 2005-09-13 | Feliks Sukhovitsky | Exercise equipment |
-
2003
- 2003-07-10 FR FR0308465A patent/FR2857445B1/fr not_active Expired - Fee Related
-
2004
- 2004-06-28 ZA ZA200600122A patent/ZA200600122B/en unknown
- 2004-06-28 KR KR1020067000540A patent/KR101035884B1/ko not_active Expired - Lifetime
- 2004-06-28 RU RU2006103983/28A patent/RU2298766C2/ru active
- 2004-06-28 ES ES04767487T patent/ES2350344T3/es not_active Expired - Lifetime
- 2004-06-28 CN CNB2004800195112A patent/CN100526806C/zh not_active Expired - Lifetime
- 2004-06-28 JP JP2006518260A patent/JP4309424B2/ja not_active Expired - Lifetime
- 2004-06-28 CA CA2531516A patent/CA2531516C/fr not_active Expired - Fee Related
- 2004-06-28 EP EP04767487A patent/EP1644703B1/fr not_active Expired - Lifetime
- 2004-06-28 DE DE602004028623T patent/DE602004028623D1/de not_active Expired - Lifetime
- 2004-06-28 WO PCT/FR2004/001641 patent/WO2005015128A1/fr not_active Ceased
- 2004-06-28 US US10/562,640 patent/US7694595B2/en active Active
- 2004-06-28 AT AT04767487T patent/ATE477471T1/de not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2063128A1 (fr) * | 1969-07-18 | 1971-07-09 | Gen Motors Corp | |
| EP0141621A2 (fr) * | 1983-10-31 | 1985-05-15 | General Motors Corporation | Capteur de rotation à vibrations |
| FR2792722A1 (fr) * | 1999-04-23 | 2000-10-27 | Sagem | Capteur gyroscopique et appareil de mesure de rotation en comportant application |
| FR2805039A1 (fr) * | 2000-02-15 | 2001-08-17 | Sagem | Capteur gyroscopique |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4309424B2 (ja) | 2009-08-05 |
| CN1820180A (zh) | 2006-08-16 |
| FR2857445A1 (fr) | 2005-01-14 |
| ES2350344T3 (es) | 2011-01-21 |
| DE602004028623D1 (de) | 2010-09-23 |
| US7694595B2 (en) | 2010-04-13 |
| RU2298766C2 (ru) | 2007-05-10 |
| CA2531516A1 (fr) | 2005-02-17 |
| ZA200600122B (en) | 2007-04-25 |
| CN100526806C (zh) | 2009-08-12 |
| ATE477471T1 (de) | 2010-08-15 |
| US20060169068A1 (en) | 2006-08-03 |
| KR20060036444A (ko) | 2006-04-28 |
| EP1644703A1 (fr) | 2006-04-12 |
| EP1644703B1 (fr) | 2010-08-11 |
| JP2007516418A (ja) | 2007-06-21 |
| RU2006103983A (ru) | 2006-06-27 |
| KR101035884B1 (ko) | 2011-05-20 |
| FR2857445B1 (fr) | 2005-09-02 |
| CA2531516C (fr) | 2010-07-27 |
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