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    • 1. 发明申请
    • METHOD OF MAKING A MICROMECHANICAL SILICON-ON-GLASS TUNING FORK GYROSCOPE
    • 制造微波玻璃调理机的方法
    • WO1995021383A1
    • 1995-08-10
    • PCT/US1995001330
    • 1995-02-01
    • THE CHARLES STARK DRAPER LABORATORY, INC.
    • THE CHARLES STARK DRAPER LABORATORY, INC.CHO, Steve, T.
    • G01P09/04
    • G01C19/5719Y10S438/924
    • A micromechanical tuning fork gyroscope (14) fabricated by a dissolved silicon wafer process whereby electrostatic bonding forms a hermetic seal between an etched glass substrate (12), metal electrodes (202) deposited thereon, and a silicon comb-drive tuning fork gyroscope (14). The dissolved silicon wafer process involves single-sided processing of a silicon substrate (100), including the steps of etching recesses (102), diffusing an etch resistant dopant (104) into the silicon substrate (100), and releasing various components of the silicon gyroscope (14) by etching through the diffusion layer (104) in desired locations (106). The glass substrate (12) also undergoes single-sided processing, including the steps of etching recesses, depositing a multi-metal system in the recesses (200), and selectively etching portions of the multi-metal system (202). One substrate (100) is inverted over the other (12) and aligned before anodic bonding of the two substrates is performed.
    • 通过溶解的硅晶片工艺制造的微机械音叉陀螺仪(14),由此静电接合在蚀刻的玻璃基板(12),沉积在其上的金属电极(202)和硅梳驱动音叉陀螺仪(14)之间形成气密密封 )。 溶解的硅晶片工艺涉及硅衬底(100)的单面处理,包括蚀刻凹槽(102),将耐蚀刻掺杂剂(104)扩散到硅衬底(100)中的步骤,以及释放 硅陀螺仪(14)通过在所需位置(106)中蚀刻通过扩散层(104)。 玻璃基板(12)也进行单面加工,包括蚀刻凹槽,在凹槽(200)中沉积多金属系统,以及选择性地蚀刻多金属系统(202)的部分的步骤。 一个衬底(100)在另一个衬底(100)上被反转,并且在两个衬底的阳极接合之前进行对准。
    • 2. 发明申请
    • FERROELECTRIC THIN FILM TRAVELLING WAVE ROTATION SENSOR
    • 铁电薄膜行驶波浪传感器
    • WO1994008245A1
    • 1994-04-14
    • PCT/US1993004935
    • 1993-05-24
    • BEI ELECTRONICS, INC.
    • BEI ELECTRONICS, INC.WAN, Lawrence, A.
    • G01P09/04
    • G01C19/5684
    • A diaphragm (24) is disposed over a cavity (18) formed in a silicon base (14). A plurality of electrodes (22) are radially disposed about the diaphragm overlying the cavity, and a signal applying circuit (34) applies a signal to the plurality of electrodes so that portions of the diaphragm flex for establishing a net angular momentum (e.g., the flexing of the diaphragm simulates a traveling wave encircling the cavity). A deformation sensing circuit comprising a plurality of strain gages (42) interconnected to form a corresponding plurality of Wheatstone bridges (38) are disposed about the periphery of the cavity along orthogonal axes (X, Y) for sensing deformation of the structure about the orthogonal axes.
    • 隔膜(24)设置在形成在硅基底(14)中的空腔(18)之上。 多个电极(22)围绕覆盖空腔的隔膜放射状设置,并且信号施加电路(34)向多个电极施加信号,使得隔膜的部分弯曲以建立净角动量(例如, 隔膜的弯曲模拟围绕空腔的行波)。 包括互连以形成对应的多个惠斯通电桥(38)的多个应变计(42)的变形感测电路围绕着沿着正交轴线(X,Y)的空腔的周边设置,用于感测关于正交的结构的变形 轴。
    • 3. 发明申请
    • MICROMECHANICAL TUNING FORK ANGULAR RATE SENSOR
    • 微机械调速器角速率传感器
    • WO1993005401A1
    • 1993-03-18
    • PCT/US1992007685
    • 1992-09-11
    • THE CHARLES STARK DRAPER LABORATORY, INC.GREIFF, PaulBOXENHORN, Burton
    • THE CHARLES STARK DRAPER LABORATORY, INC.
    • G01P09/04
    • G01C19/5719G01P2015/0831
    • A micromechanical tuning fork gyroscope includes a suspended structure (14) comprising at least first and second vibratable structures (38, 40). Each vibratable structure is energizable to vibrate laterally, within a first plane, along an axis (42) normal to the rotation sensitive axis (44). The lateral or inplane vibration of the first and second vibratable structures effects simultaneous vertical or rotational movement of at least a portion of the suspended structure upon the occurence of angular rotation of the gyroscope about the rotation sensitive axis. Vertical or rotational movement of the suspended structure is sensed by electrodes (70, 72) and a voltage proportional to the movement is generated, for providing an indication of angular rate of rotation detected by the gyroscope.
    • 微机械音叉陀螺仪包括包括至少第一和第二可振动结构(38,40)的悬挂结构(14)。 每个可振动结构可激励以沿着垂直于旋转敏感轴线(44)的轴线(42)在第一平面内横向振动。 第一和第二可振动结构的横向或平面上的振动在陀螺仪围绕旋转敏感轴的角度旋转发生时,同时垂直或旋转移动悬架结构的至少一部分。 通过电极(70,72)检测悬挂结构的垂直或旋转运动,并且产生与运动成比例的电压,以提供由陀螺仪检测到的角速度的指示。
    • 4. 发明申请
    • GUARD BANDS FOR TUNING FORK GYROSCOPES
    • 用于调节运动员的保护套
    • WO1998022827A1
    • 1998-05-28
    • PCT/US1997021000
    • 1997-11-18
    • THE CHARLES STARK DRAPER LABORATORY, INC.
    • THE CHARLES STARK DRAPER LABORATORY, INC.WEINBERG, Marc, S.PINSON, John, C.
    • G01P09/04
    • G01C19/5719
    • Guard bands (20a, 20b, 20c, 20d) in a tuning fork gyroscope reduce or eliminate force and sensitivity associated with proof mass (13) motion normal to the substrate (22) as a result of voltage transients. The guard bands reduce the undesired effects of transient voltages on electrostatic coupling of interleaved comb electrodes (12a, 18a; 14a, 18b; 14b, 18c; 12d, 18d). The guard bands are biased to reduce the coupling ratio to zero and thereby enable starting and improved performance. Various configurations of guard bands may be employed including distinct inner (20b, 20c) and outer (20a, 20d) guard bands, distinct inner guard bands only, extended sense electrodes below inner sensing combs with no outer guards, distinct outer guard bands with extended sense electrodes, and sense electrodes extended beneath both drive and sensing combs.
    • 音叉陀螺仪中的保护带(20a,20b,20c,20d)由于电压瞬变而降低或消除与基板(22)垂直的检测质量(13)运动相关联的力和灵敏度。 保护带减少了交替梳状电极(12a,18a; 14a,18b; 14b,18c; 12d,18d)对瞬态电压对静电耦合的不期望的影响。 保护带被偏置以将耦合比降低到零,从而实现起动和改进的性能。 可以采用保护带的各种配置,包括不同的内部(20b,20c)和外部(20a,20d)保护带,仅有不同的内部保护带,扩展的感应电极位于内部传感梳以下,没有外部保护,不同的外部保护带具有延伸 感测电极,以及在驱动和感测梳下面延伸的感测电极。
    • 9. 发明申请
    • SYNCHRONOUS FM DIGITAL DETECTOR
    • 同步FM数字检测器
    • WO1987002468A1
    • 1987-04-23
    • PCT/US1986002221
    • 1986-10-20
    • SUNDSTRAND DATA CONTROL, INC.
    • SUNDSTRAND DATA CONTROL, INC.PETERS, Rex, B.
    • G01P09/04
    • G01C19/5726
    • A system for determining angular rate of rotation of a body about a rate axis. In one arrangement, the system comprises first (10) and second (12) accelerometers, movement means and processing means. The first and second accelerometers have their sensitive axes (16, 18) parallel to a sensing axis that is in turn perpendicular to the rate axis. The first and second accelerometers are adapted to produce first and second output signals (a1, a2), each output signal having a frequency corresponding to the acceleration experienced by the respective accelerometer along its sensitive axis. The movement means includes means (68) for producing a periodic movement signal and means (14) responsive to the movement signal for periodically moving the accelerometers along a movement axis perpendicular to the rate and sensing axes, such that each output signal includes a periodic Coriolis component. The processing means includes means (75) for producing a reference signal that defines one or more first time periods during which the Coriolis components have one polarity and one or more second time periods during which the Coriolis components have the opposite polarity. The first and second time periods together span one or more complete periods of the movement signal. The processing means further comprises means (71, 72) for determining, for each output signal, a phase value representing the difference between the phase change of the output signal during the first time periods and the phase change of the output signal during the second time periods. The processing means further includes means (80) for determining from the phase values a value representing the angular rate of rotation of the body about the rate axis. In a second arrangement, a single accelerometer is periodically moved along the movement axis.
    • 用于确定身体围绕速率轴的旋转角度的系统。 在一种布置中,系统包括第一加速度计(10)和第二加速度计(12),运动装置和处理装置。 第一和第二加速度计具有与感测轴平行的敏感轴(16,18),感测轴又与速度轴垂直。 第一和第二加速度计适于产生第一和第二输出信号(a1,a2),每个输出信号的频率对应于各加速度计沿其敏感轴所经历的加速度。 移动装置包括用于产生周期性运动信号的装置(68)和响应于运动信号的装置(14),用于沿着垂直于速率和感测轴的运动轴周期性地移动加速度计,使得每个输出信号包括周期性科里奥利 零件。 处理装置包括用于产生参考信号的装置(75),该参考信号定义了科里奥利分量具有一个极性的一个或多个第一时间段,以及科里奥利分量具有相反极性的一个或多个第二时间段。 第一和第二时间段一起跨越运动信号的一个或多个完整周期。 处理装置还包括装置(71,72),用于为每个输出信号确定表示第一时间段期间输出信号的相位变化与第二时间期间输出信号的相位变化之间的差的相位值 周期。 处理装置还包括用于根据相位值确定表示身体围绕速率轴的角速度的值的装置(80)。 在第二布置中,单个加速度计周期性地沿运动轴线移动。
    • 10. 发明申请
    • GIMBALLED VIBRATING WHEEL GYROSCOPE HAVING STRAIN RELIEF FEATURES
    • 具有应变消除特征的GIMBALLED VIBRATING轮式陀螺仪
    • WO1996035957A1
    • 1996-11-14
    • PCT/US1996006426
    • 1996-05-08
    • THE CHARLES STARK DRAPER LABORATORY, INC.
    • THE CHARLES STARK DRAPER LABORATORY, INC.GREIFF, PaulANTKOWIAK, Bernard, M.
    • G01P09/04
    • G01C19/5712B81B3/0051B81B2201/0242B81B2203/056B81B2203/058G01P15/0802G01P15/125
    • A gimballed vibrating wheel gyroscope (10) for detecting rotational rates in inertial space. The gyroscope (10) includes a support (20) oriented in a first plane and a wheel assembly (12) disposed over the support (20) parallel to the first plane. The wheel assembly (12) is adapted for vibrating rotationally at a predetermined frequency in the first plane and is responsive to rotational rates about a coplanar input axis (32) for providing an output torque about a coplanar output axis (34). The gyroscope (10) also includes a post assembly (18a, 18b) extending between the support (20) and the wheel assembly (12) for supporting the wheel assembly (12). The wheel assembly (12) has an inner hub (24), an outer wheel (26), and spoke flexures (28a-28d) extending between the inner hub (24) and the outer wheel (26) and being stiff along both the input and output axes (32, 34). A flexure (22a, 22b) is incorporated in the post assembly (18a, 18b) between the support (20) and the wheel assembly inner hub (24) and is relatively flexible along the output axis (34) and relatively stiff along the input axis (32).
    • 用于检测惯性空间中的旋转速率的万向振动轮陀螺仪(10)。 陀螺仪(10)包括在第一平面中定向的支撑件(20)和布置在平行于第一平面的支撑件(20)上方的轮组件(12)。 车轮组件(12)适于在第一平面中以预定频率旋转振动,并且响应于围绕共面输入轴线(32)的旋转速度,以提供围绕共面输出轴线(34)的输出扭矩。 陀螺仪(10)还包括在支撑件(20)和轮组件(12)之间延伸以支撑轮组件(12)的柱组件(18a,18b)。 车轮组件(12)具有内轮毂(24),外轮(26)和在内轮毂(24)和外轮(26)之间延伸的轮辐弯曲件(28a-28d),并且沿两个 输入和输出轴(32,34)。 弯曲件(22a,22b)被并入在支撑件(20)和轮组件内毂(24)之间的柱组件(18a,18b)中,并且沿着输出轴线(34)相对柔性并沿输入相对较硬 轴(32)。