公开(公告)号：US5585562A

公开(公告)日：1996-12-17

申请号：US640399

申请日：1996-04-30

申请人： Nobuo Kurata ,  Nobuyoshi Sugitani ,  Takashi Ozaki ,  Kenji Harada ,  Kimitoshi Tsuji ,  Yutaka Nonomura ,  Takeshi Morikawa ,  Masayuki Okuwa ,  Kouji Tsukada

发明人： Nobuo Kurata ,  Nobuyoshi Sugitani ,  Takashi Ozaki ,  Kenji Harada ,  Kimitoshi Tsuji ,  Yutaka Nonomura ,  Takeshi Morikawa ,  Masayuki Okuwa ,  Kouji Tsukada

IPC分类号： G01C19/5607 ,  G01P9/04

CPC分类号： G01C19/5607

摘要： A vibration-sensing gyro composed of a light alloy such as duralumin includes a base and a first pair of tines projecting parallel to each other from the base. Piezoelectric elements are mounted on the root of the side faces of the first pair of tines to excite the first pair of tines along an X axis. The vibrations of the first pair of tines along the X axis are then propagated to a second pair of tines to vibrate the second pair of tines along the X axis. Piezoelectric elements are mounted on the root of the upper and the lower faces of the second pair of tines to detect vibrations of the second pair of tines along an Y axis. When the second pair of tines receives the Coriolis force based on an angular velocity .omega. around a Z axis and vibrates along the Y axis, the vibrations along the Y axis are detected as electric signals (alternating current voltages) by piezoelectric effects of the piezoelectric elements.

摘要翻译： 由诸如硬铝的轻合金构成的振动感测陀螺包括基部和从底部彼此平行地突出的第一对尖齿。 压电元件安装在第一对尖齿的侧面的根部上，以沿X轴激发第一对尖齿。 沿着X轴的第一对尖齿的振动然后传播到第二对尖齿，以使第二对尖齿沿X轴振动。 压电元件安装在第二对尖齿的上表面和下表面的根部上，以检测第二对尖齿沿着Y轴的振动。 当第二对尖齿接收基于围绕Z轴的角速度ω的科里奥利力并且沿着Y轴振动时，通过压电元件的压电效应将沿着Y轴的振动检测为电信号（交流电压） 。

公开(公告)号：US5533397A

公开(公告)日：1996-07-09

申请号：US329385

申请日：1994-10-26

申请人： Nobuyoshi Sugitani ,  Masayuki Okuwa ,  Takeshi Morikawa ,  Yutaka Nonomura

发明人： Nobuyoshi Sugitani ,  Masayuki Okuwa ,  Takeshi Morikawa ,  Yutaka Nonomura

IPC分类号： G01C19/56 ,  G01C19/5607 ,  H03H9/02 ,  H03H9/24 ,  G01P9/04

CPC分类号： G01C19/5607

摘要： The invention provides a vibration-sensing gyro, where resonance frequencies of tines are adjusted adequately in a simple manner. A vibration-sensing gyro (10) of the invention is made of a light alloy plate like duralumin and includes a first tine (14) and a second tine (16) disposed parallel to each other and projecting from a base (12). When the first tine (14) has a length l1, a width w1 along the X axis, and a thickness t1 and the second tine (16) has a length l2, a width w2 along the X axis, and a thickness t2 (=t1), the first tine (14) and the second tine (16) hold the relationship of l2/.sqroot.t2=l1/.sqroot.w1. In other words, the tines (14,16) and the base (12) are manufactured to satisfy this relationship. Such definition of the dimensions makes a resonance frequency fx1 of the first tine along the X axis coincide with a resonance frequency fy 2 of the second tine 16 along the Y axis.

摘要翻译： 本发明提供了一种振动感测陀螺仪，其中以简单的方式适当地调节尖齿的共振频率。 本发明的振动感应陀螺仪（10）由轻质合金板如硬铝制成，并包括彼此平行并从底座（12）伸出的第一齿（14）和第二齿（16）。 当第一齿（14）具有长度l1时，沿X轴的宽度w1和厚度t1和第二齿16具有长度l2，沿X轴的宽度w2和厚度t2（= t1），第一齿（14）和第二齿（16）保持l2 / 2ROOT t2 = l1 / 2ROOT w1的关系。 换句话说，制造齿（14,16）和基座（12）以满足这种关系。 尺寸的这种定义使得沿着X轴的第一齿的共振频率fx1与第二齿16沿Y轴的共振频率fy 2一致。

公开(公告)号：US5635642A

公开(公告)日：1997-06-03

申请号：US518840

申请日：1995-08-24

申请人： Yutaka Nonomura ,  Takeshi Morikawa ,  Masayuki Okuwa ,  Kouji Tsukada

发明人： Yutaka Nonomura ,  Takeshi Morikawa ,  Masayuki Okuwa ,  Kouji Tsukada

IPC分类号： G01C19/56 ,  G01C19/5628 ,  G01P3/44

CPC分类号： G01C19/5607

摘要： A vibration-sensing device (10) with high sensitivity includes a torsion bar (16) fixed on both ends thereof to a frame, a tuning fork-shaped vibrating member (12) joined with and supported by the torsion bar (16), and first and second torsion vibrating bodies (14,15) symmetrically projected from the torsion bar (16). The torsion bar (16), the tuning fork-shaped vibrating member (12), and the torsion vibrating bodies (14,15) constitute a torsion vibrating system. The application of an angular velocity to the vibration-sensing device (10) under the condition of plane vibrations of first and second vibrating tines (12a, 12b) of the first tuning fork-shaped vibrating member (12) along an X axis generates Coriolis forces to drive torsion vibration of the first tuning fork-shaped vibrating member (12) round the torsion bar (16), thereby driving torsion vibration corresponding to the angular velocity in the torsion vibrating system. The torsion vibration is amplified by the first and second torsion vibrating bodies (14,15) and detected by torsion vibration-detecting piezoelectric elements (20a,20b) attached to the torsion vibrating bodies (14,15). An angular velocity sensor using the vibration-sensing device, and a method of adjusting the sensitivity of the device are also provided.

摘要翻译： 具有高灵敏度的振动检测装置（10）包括固定在其框架上的扭杆（16），与扭杆（16）接合并由扭杆（16）支撑的音叉形振动件（12），以及 从扭杆（16）对称地突出的第一和第二扭转振动体（14,15）。 扭杆（16），音叉形振动部件（12）和扭转振动体（14,15）构成扭转振动系统。 在第一音叉形振动件（12）的X轴的第一和第二振动尖（12a，12b）的平面振动的条件下，沿着X轴向角度速度施加角速度产生科里奥利 驱动第一音叉形振动件（12）在扭力杆（16）周围的扭转振动的力，由此驱动与扭转振动系统中的角速度相对应的扭转振动。 扭转振动由第一和第二扭转振动体（14,15）放大，并通过安装在扭转振动体（14,15）上的扭转振动检测压电元件（20a，20b）检测。 还提供了使用振动感测装置的角速度传感器和调节装置的灵敏度的方法。