公开(公告)号：US4628735A

公开(公告)日：1986-12-16

申请号：US681564

申请日：1984-12-14

Applicant: Gordon S. Kirkpatrick

Inventor： Gordon S. Kirkpatrick

IPC: G01P15/097 ,  G01P15/10

CPC classification number: G01P15/097 ,  G01P2015/0828

Abstract: The elimination of activity dips in the output of vibrating beam accelerometers has often required an adjustment of parameters in conflict with other design criteria. This problem is overcome by the present accelerometer that comprises a pendulum (48) and a force transducer. The pendulum has first (49) and second (52) ends and a first axis (P) extending between the first and second ends. The pendulum is hingedly connected at its first end to a support (50) along a second axis (F) perpendicular to the first axis. The force transducer comprises an oscillator and a dual beam force sensing element (53) connected between the second end of the pendulum and the support. The point of connection of the force sensing element to the pendulum lies along the first axis. The force transducer is adapted for vibration over a predetermined operating range (44) of beam vibration frequencies. The second end of the pendulum is formed so as to cause the frequencies of pendulum vibration modes to lie outside the operating range, preferably by controlling the mass of the pendulum at the outer edges of the second end so as to cause the normal mode frequency of twisting vibration of the pendulum about the first axis to lie outside the operating range. In another aspect, the pendulum has a width dimension parallel to the second axis, and the width of the pendulum decreases from a point intermediate the ends of the pendulum to the second end.

Abstract translation: 消除振动束加速度计输出中的活动下降通常需要调整与其他设计标准相冲突的参数。 这个问题由包括摆锤（48）和力传感器的本加速度计克服。 钟摆具有第一（49）和第二（52）端部以及在第一和第二端之间延伸的第一轴线（P）。 钟摆在其第一端处沿着垂直于第一轴线的第二轴线（F）铰接地连接到支撑件（50）。 力传感器包括连接在摆锤的第二端和支撑件之间的振荡器和双梁力检测元件（53）。 力感测元件到摆的连接点位于第一轴上。 力传感器适于在光束振动频率的预定操作范围（44）上振动。 钟摆的第二端形成为使摆振动模式的频率位于工作范围之外，优选地通过在第二端的外边缘处控制摆锤的质量以使正常模式频率 钟摆绕第一轴的扭转振动超出工作范围。 在另一方面，钟摆具有平行于第二轴线的宽度尺寸，并且摆锤的宽度从摆锤的端部到第二端的点减小。