公开(公告)号：WO03025503A9

公开(公告)日：2003-12-18

申请号：PCT/GB0204056

申请日：2002-09-06

Applicant: BAE SYSTEMS PLC ,  FELL CHRISTOPHER PAUL ,  ELEY REBECKA ,  FOX COLIN HENRY JOHN ,  MCWILLIAM STEWART

Inventor： FELL CHRISTOPHER PAUL ,  ELEY REBECKA ,  FOX COLIN HENRY JOHN ,  MCWILLIAM STEWART

IPC: G01C19/5677 ,  G01C19/56

CPC classification number: G01C19/5677

Abstract: A two axis gyroscope including a planar vibratory resonator (5) having a ring or hoop-like structure, carrier mode drive means (22) for causing the resonator (5) to vibrate in a cosntheta vibration mode, carrier mode pick-off means (23) for sensing movement of the resonator (5), x-axis and x-axis response mode pick-off means (25; 27) for detecting movement of the resonator in response to rotation about the x-axis and y-axis; x-axis and y-axis response mode drive means (24; 26) for nulling said motions and support means (9) for flexibly supporting the resonator (5) and for allowing the resonator to vibrate relative to the support means (9) in response to the drive means (22) and to applied rotation; wherein the support (9) means comprises only L legs, where, when L is even: L=2N/K, and where, when L is odd: L=N/K, where K is an integer, L > 2 and N is the carrier mode order.

Abstract translation: 包括具有环形或环状结构的平面振动谐振器（5）的双轴陀螺仪，用于使谐振器（5）以谐振振动模式振动的载体模式驱动装置（22），载波模式拾取装置 23），用于感测谐振器（5）的移动; x轴和x轴响应模式拾取装置（25; 27），用于响应围绕x轴和y轴的旋转检测谐振器的移动; x轴和y轴响应模式驱动装置（24; 26），用于使所述运动零点和支撑装置（9）用于柔性地支撑谐振器（5）并且允许谐振器相对于支撑装置（9）振动 响应于驱动装置（22）并施加旋转; 其中，所述支撑件（9）仅包括L脚，其中当L为偶数时：L = 2N / K，并且其中当L为奇数时：L = N / K，其中K是整数，L> 2和N 是载波模式的顺序。

公开(公告)号：CA2459787A1

公开(公告)日：2003-03-27

申请号：CA2459787

申请日：2002-09-06

Applicant: BAE SYSTEMS PLC

Inventor： MCWILLIAM STEWART ,  FOX COLIN HENRY JOHN ,  FELL CHRISTOPHER PAUL ,  ELEY REBECKA

IPC: G01C19/5684 ,  G01C19/56

Abstract: A three axis sensor including a substantially planar vibrator resonator (2) having a substantially ring or hoop like structure, drive means (4) for causing the resonator (2) to vibrate in an in plane cos2.theta. vibration mode, carrier mode pick-off means (5) for sensing movement of the resonator in response to said drive means, pick-off means (6) for sensing in plane sin2.theta. resonator motion induced by rotation about the z-axis, drive mea ns (7) for nulling said motion, pick-off means (8) for sensing out of plane sin3.theta. resonator motion induced by rotation about the x-axis, drive mea ns (9) for nulling said motion, pick-off means (10) for sensing out of plane cos3.theta. resonator motion induced by rotation about the y-axis, drive mea ns (11) for nulling said motion, and support means (9) for flexibly supporting the resonator, wherein the support means comprises only L support beams, whe re L.noteq.2Jx3K and J=0,1 or 2 and K=0 or 1 with L>24.

公开(公告)号：CA2458601A1

公开(公告)日：2003-03-27

申请号：CA2458601

申请日：2002-09-06

Applicant: BAE SYSTEMS PLC

Inventor： ELEY REBECKA ,  FELL CHRISTOPHER PAUL ,  MCWILLIAM STEWART ,  FOX COLIN HENRY JOHN

IPC: G01C19/5677 ,  G01C19/56

Abstract: A two axis gyroscope including a planar vibratory resonator (5) having a rin g or hoop-like structure, carrier mode drive means (22) for causing the resonator (5) to vibrate in a cosn.theta. vibration mode, carrier mode pick- off means (23) for sensing movement of the resonator (5), x-axis and x-axis response mode pick-off means (25; 27) for detecting movement of the resonato r in response to rotation about the x-axis and y-axis; x-axis and y-axis response mode drive means (24; 26) for nulling said motions and support mean s (9) for flexibly supporting the resonator (5) and for allowing the resonator to vibrate relative to the support means (9) in response to the drive means (22) and to applied rotation; wherein the support (9) means comprises only L legs, where, when L is even: L=2N/K, and where, when L is odd: L=N/K, where K is an integer, L > 2 and N is the carrier mode order.

公开(公告)号：CA2458590A1

公开(公告)日：2003-03-27

申请号：CA2458590

申请日：2002-09-06

Applicant: BAE SYSTEMS PLC

Inventor： ELEY REBECKA ,  MCWILLIAM STEWART ,  FELL CHRISTOPHER PAUL ,  FOX COLIN HENRY JOHN

IPC: G01C19/5684 ,  G01C19/56 ,  G01P9/04

Abstract: A single axis rate sensor including a substantially planar vibratory resonat or (1) having a substantially ring or hoop-like structure with inner and outer peripheries (1a, 1b) extending around a common axis (z) drive means (6) for causing the resonator (1) to vibrate in a Cos2.theta. vibration mode, carrie r mode pick-off means (7) for sensing movement of the resonator (1) in respons e to said drive means pick-off means (9) for detecting Sin2.theta. vibration mode motion induced by rotation around the Z-axis, Sin2.theta. vibration mod e drive means (8) for nulling said motion and support means (2) for flexibly supporting the resonator (1) and for allowing the resonator (1) to vibrate relative to the support means (2) in response to the drive means, or to applied rotation wherein the support means comprises only L support beams, where L .noteq. 2K, and K = 0, 1, 2 or 3.

公开(公告)号：AU2021281090A1

公开(公告)日：2023-01-05

申请号：AU2021281090

申请日：2021-05-26

Applicant: BAE SYSTEMS PLC

Inventor： ELEY REBECKA ,  BALMOND MARK DAVID ,  FIGGURES CHRISTOPHER COLIN ,  STURLAND IAN MICHAEL ,  CHURCH SIMON ROBERT

IPC: G01N17/04

Abstract: Specimens for evaluating corrosion protection of substrates due, at least in part, to coatings applied thereupon are described. A specimen (1) comprises: a first coating (10), comprising a first set of layers (11) including a first layer (11A), on a first substrate (12); and a first set of perforations (100), including a first perforation (100A) and a second perforation (100B), in the first coating (10), wherein the first perforation (100A) has a first depth D1 through the first coating (10) and a first dimension W1 transverse to the first depth, wherein the second perforation (100B) has a second depth D2 through the first coating (10) and a second dimension W2 transverse to the second depth D2 and wherein the first dimension W1 and the second dimension W2 are different.

公开(公告)号：CA2458604A1

公开(公告)日：2003-03-27

申请号：CA2458604

申请日：2002-09-06

Applicant: BAE SYSTEMS PLC

Inventor： FELL CHRISTOPHER PAUL ,  MCWILLIAM STEWART ,  FOX COLIN HENRY JOHN ,  ELEY REBECKA

IPC: G01C19/5684 ,  G01C19/56

Abstract: A three axis rate sensor includes a substantially planar vibratory resonator (5) having a substantially ring or hoop-like structure with inner (6) and outer peripheries extending around a common axis, drive means (22) for causi ng the resonator to vibrate in a Cos2.theta. vibration mode, carrier mode pick- off means (23) for sensing movement of the resonator (5) in response to the applied drive means, x-axis, y-axis and z-axis response mode, pick-off means (25, 27, 31) for detecting movement of the resonator in response to rotation about the x-axis, y-axis and z-axis, x-axis, y-axis and z-axis response mode drive means (24, 26, 30) for nulling said motion and support means (9) for flexibly supporting the resonator and for allowing the resonator (5) to vibrate relative to the support means (9) in response to the drive means (22 ) and the applied rotation wherein the support means (9) comprises only L support beams, where L .noteq. 2k, and k = 0, 1, 2 or 3.

公开(公告)号：CA2458594A1

公开(公告)日：2003-03-27

申请号：CA2458594

申请日：2002-09-06

Applicant: BAE SYSTEMS PLC

Inventor： ELEY REBECKA ,  FELL CHRISTOPHER PAUL ,  FOX COLIN HENRY JOHN ,  MCWILLIAM STEWART

IPC: G01C19/5684 ,  G01C19/56

Abstract: A single axis rate sensor (10) including a substantially planar vibratory resonator (16) having a substantially ring or hoop-like structure with inner (24) and outer peripheries extending around a common axis, drive means (18) for causing the resonator to vibrate in a Cos3.theta. vibration mode, carrie r mode pick-off means (20) for sensing movement of the resonator in response t o said drive means (18), pick-off means (36) for sensing resonator movement induced in response to rotation of the rate sensor about the sensitive axis, drive means (38) for mulling said motion, and support means (22) for flexibl y supporting the resonator (16) and for allowing the resonator (16) to vibrate relative to the support means (22) in response to the drive means, and to applied rotation wherein the support means (16) comprises only L support beams, where L .noteq. 3 x 2K-1, L> 2 and K = 1, 2 or 3.