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    • 1. 发明授权
    • Counting apparatus and method for frequency sampling
    • 频率采样计数装置及方法
    • US4541105A
    • 1985-09-10
    • US592657
    • 1984-03-23
    • Charles K. LeeRex B. PetersAleksandar M. Gogic
    • Charles K. LeeRex B. PetersAleksandar M. Gogic
    • G01R23/02G01R23/10G01R23/00
    • G01R23/10G01R23/02
    • An apparatus and method for counting the number of cycles of a sensor signal and of a reference signal that occur during respective time intervals associated with a sampling interval defined by a sample signal. Sensor and reference gate signals are produced and respectively define sensor and reference intervals. The sensor interval begins and ends synchronously with respect to the sensor signal, and the reference interval begins and ends synchronously with respect to the reference signal. The sensor, reference and sampling intervals are approximately coextensive with one another. Cycles of the sensor and reference signals are counted during the sensor and reference intervals, respectively. The process may be repeated for a plurality of successive sampling intervals.
    • 一种用于对传感器信号的周期数和在与由采样信号定义的采样间隔相关联的各个时间间隔期间发生的参考信号进行计数的装置和方法。 产生传感器和参考门信号,并分别定义传感器和参考间隔。 传感器间隔相对于传感器信号同步开始和结束,参考间隔相对于参考信号同步开始和结束。 传感器,参考和采样间隔大致相互延伸。 传感器和参考信号的周期分别在传感器和参考间隔期间进行计数。 该过程可以重复多个连续采样间隔。
    • 4. 发明授权
    • Translational accelerometer and accelerometer assembly method
    • 平移加速度计和加速度计组装方法
    • US4872342A
    • 1989-10-10
    • US222680
    • 1988-07-21
    • Richard A. HansonRex B. PetersBrian L. NorlingEdward A. Urbach
    • Richard A. HansonRex B. PetersBrian L. NorlingEdward A. Urbach
    • G01P15/08G01P15/097G01P15/10
    • G01P15/097G01P15/0888G01P2015/0828Y10T29/49007
    • An accelerometer comprising a body (10, 16, 12), a proof mass (18, 30, 32), a mounting strucutre comprising flexures (20, 22) for mounting the proof mass to the body, and force sensing elements (34, 38). The flexures permit translational motion of the proof mass with respect to the body along a sensitive axis SA and rotation of the proof mass with respect to the body about a hinge axis HA that is perpendicular to the sensitive axis. Acceleration of the accelerometer along the sensitive axis results in translational motion of the proof mass along the sensitive axis. The force sensing elements reacts to such translational motion by producing a signal indicative of acceleration along the sensitive axis. In a preferred embodiment, the mounting structure comprises a pair of fused quartz flexures that are oppositely directed with respect to one another, and the force sensing elements comprise a pair of vibrating beam force transducers that are connected to the proof mass on opposite sides of the hinge axis from one another. The described assembly method for accelerometers comprises forming bridges between the proof mass and body, the bridges being removed after attachment of the force sensing elements.
    • 1.一种加速度计,包括主体(10,16,12),检验质量块(18,30,32),安装结构,其包括用于将所述证明物质安装到所述主体的挠曲件(20,22),以及力传感元件(34, 38)。 挠曲件允许检测质量体沿着敏感轴线SA相对于身体的平移运动,并且证明物质相对于身体围绕垂直于敏感轴线的铰链轴线HA旋转。 加速度传感器沿着敏感轴的加速导致检测质量沿着敏感轴的平移运动。 力感测元件通过产生指示沿着敏感轴的加速度的信号来对这种平移运动做出反应。 在优选实施例中,安装结构包括相对于彼此相对地指向的一对熔融石英弯曲部,并且力感测元件包括一对振动梁力传感器,其连接到在 铰链轴彼此。 所描述的用于加速度计的装配方法包括在检验质量块和本体之间形成桥,桥接件在附接力感测元件之后被移除。
    • 5. 发明授权
    • Automatic continuous nulling of angular rate sensor
    • 自动连续归零角速度传感器
    • US4665748A
    • 1987-05-19
    • US789655
    • 1985-10-21
    • Rex B. Peters
    • Rex B. Peters
    • G01C19/56G01C19/574G01C19/5776G01P3/46
    • G01C19/574G01C19/56G01C19/5776
    • An angular rate sensor comprising a pair of accelerometers that includes means for continuously nulling error signals resulting from misalignment of the accelerometers. The first accelerometer (10) has a first force sensing axis and produces a first output signal (a.sub.1) indicating acceleration along the first force sensing axis. The second accelerometer (12) has a second force sensing axis and produces a second output signal (a.sub.2) indicating acceleration along the second force sensing axis. The accelerometers are mounted by mounting means such that their force sensing axes are both parallel to a common sensing axis and such that the accelerometers can be moved along a vibration axis normal to the sensing axis. A signal generator (76) produces a periodic deive signal having a predetermined frequency, and drive means (80, 82, 84) connected to the mounting means is responsive to the drive signal for vibrating the first and second accelerometers along the vibration axis at the predetermined frequency. Signal processing means (104) receives the first and second output signals and generates a Coriolis signal representing the Coriolis acceleration along the sensing axis resulting from movement of the accelerometers along the vibration axis and rotation of the body about a rate axis normal to the vibration axis and to the sensing axis. The signal processing means includes the detection means (92) that receives the Coriolis signal and produces a feedback signal that is a function of those components of the Coriolis signal that are in phase with respect to the drive signal. The drive means includes means (80) for combining the feedback signal with the drive signal, such that the in phase components are continuously driven towards a null value.
    • 角速率传感器包括一对加速度计,其包括用于连续归零由加速度计的未对准产生的误差信号的装置。 第一加速度计(10)具有第一力感测轴并且产生指示沿着第一力感测轴的加速度的第一输出信号(a1)。 第二加速度计(12)具有第二力感测轴,并产生指示沿着第二力感测轴的加速度的第二输出信号(a2)。 加速度计通过安装装置安装,使得它们的力感测轴线都平行于共同的感测轴线,并且使得加速度计可以沿着垂直于感测轴线的振动轴线移动。 信号发生器(76)产生具有预定频率的周期性去除信号,并且连接到安装装置的驱动装置(80,82,84)响应于驱动信号,用于在第一和第二加速度计沿着振动轴振动第一和第二加速度计 预定频率。 信号处理装置(104)接收第一和第二输出信号,并且产生科里奥利信号,其表示沿加速度传感器沿着振动轴的运动产生的沿感测轴的科里奥利加速度,并且主体围绕与振动轴垂直的速率轴线的旋转 和传感轴。 信号处理装置包括接收科里奥利信号并产生与相对于驱动信号同相的科里奥利信号的那些分量的函数的反馈信号的检测装置(92)。 驱动装置包括用于将反馈信号与驱动信号组合的装置(80),使得同相分量被连续地朝向空值驱动。
    • 8. 发明授权
    • Anti-aliasing for frequency output sensors
    • 用于频率输出传感器的反时针
    • US5095263A
    • 1992-03-10
    • US535746
    • 1990-06-11
    • Rex B. Peters
    • Rex B. Peters
    • G01D5/248G01R23/00H03L7/183
    • G01D5/248G01R23/00H03L7/183
    • A technique for reducing the effects of aliasing in a frequency output sensor system. The system includes a sensor for producing a sensor output signal at a frequency that varies within a modulation range as a function of an input parameter. The system also includes a processor for measuring the frequency of the sensor output signal at a sequence of sample times. The invention provides an analog filter for filtering the sensor output signal. In a first embodiment, the filter has an increasing phase lag versus frequency characteristic within the modulation range. In a second embodiment, the filter comprises a phase lock loop having frequency dividers in the input signal path and in the feedback path.
    • 一种降低频率输出传感器系统中混叠效应的技术。 该系统包括用于以在输入参数的函数下在调制范围内变化的频率产生传感器输出信号的传感器。 该系统还包括用于在一系列采样时间测量传感器输出信号的频率的处理器。 本发明提供一种用于过滤传感器输出信号的模拟滤波器。 在第一实施例中,滤波器在调制范围内具有相对于频率特性增加的相位滞后。 在第二实施例中,滤波器包括在输入信号路径和反馈路径中具有分频器的锁相环。
    • 9. 发明授权
    • Matched pairs of force transducers
    • 匹配的力传感器对
    • US4872343A
    • 1989-10-10
    • US230791
    • 1988-08-10
    • Rex B. PetersCraig J. Cornelius
    • Rex B. PetersCraig J. Cornelius
    • G01P15/10G01L1/10G01L1/16G01P15/00G01P15/097
    • G01P15/097G01L1/162
    • A matched pair of vibrating beam force transducers for use in an instrument such as an accelerometer, to provide enhanced linearity and common mode tracking, while decreasing the possibility of lock in or cross-talk between the transducers. In a preferred embodiment, first and second transducers are provided, the transducers producing respective first and second output signals having respective first and second frequencies. The transducers are connected in an arrangement in which for a given acceleration, one frequency increases and the other frequency decreases. The first transducer comprises a pair of first beams, and the second transducer comprises a pair of second beams. The beam dimensions are selected such that the Euler buckling constants of the first and second transducers are substantially equal to one another, and such that the first and second frequencies are different from one another when the acceleration is zero and preferably are different from one another throughout the operating range of the accelerometer. In preferred arrangements, the transducer beams have a constant thickness, and the transducers have common axial stiffnesses.
    • 用于诸如加速度计的仪器中的匹配的一对振动梁力传感器,以提供增强的线性度和共模跟踪,同时降低换能器之间锁定或串扰的可能性。 在优选实施例中,提供了第一和第二换能器,所述换能器产生具有相应的第一和第二频率的相应的第一和第二输出信号。 传感器以一种给定加速度的方式连接,一个频率增加,另一个频率降低。 第一传感器包括一对第一光束,第二传感器包括一对第二光束。 选择光束尺寸使得第一和第二换能器的欧拉屈曲常数彼此基本相等,并且使得当加速度为零时,第一和第二频率彼此不同,并且优选地彼此不同 加速度计的工作范围。 在优选的布置中,换能器束具有恒定的厚度,并且换能器具有共同的轴向刚度。
    • 10. 发明授权
    • Synchronous FM digital detector
    • 同步FM数字探测器
    • US4712426A
    • 1987-12-15
    • US789657
    • 1985-10-21
    • Rex B. Peters
    • Rex B. Peters
    • G01C19/5614G01C19/5776G01P9/04G01P15/10
    • G01C19/5776G01C19/5614
    • 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 apparatus and processor. 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 produce first and second output signals (a.sub.1, a.sub.2), each output signal having a frequency corresponding to the acceleration experienced by the respective accelerometer along its sensitive axis. The movement apparatus includes a generator (68) for producing a periodic movement signal and a mounting system (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 processor includes a device (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 processor further comprises counters (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 processor further includes a microprocessor (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,该系统包括第一(10)和第二(12)加速度计,移动装置和处理器。 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受的加速度。 移动装置包括用于产生周期性运动信号的发生器(68)和响应于运动信号的安装系统(14),用于沿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 定期科里奥利成分。 该处理器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。 处理器还包括计数器(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段期间输出信号的相位变化之间的差的相位值 。 处理器还包括微处理器(80),用于根据相位值确定表示身体围绕速率轴线的角速度的值。 在第二布置中,单个加速度计周期性地沿运动轴线移动。