发明授权
US06631641B1 Device and method for determining frequency and amplitude of an oscillating structure, especially for measuring acceleration or rotational rates
失效
用于确定振荡结构的频率和振幅的装置和方法，特别是用于测量加速度或旋转速率
- 专利标题： Device and method for determining frequency and amplitude of an oscillating structure, especially for measuring acceleration or rotational rates
- 专利标题（中）： 用于确定振荡结构的频率和振幅的装置和方法，特别是用于测量加速度或旋转速率
-
申请号： US09762221申请日： 2001-02-05
-
公开(公告)号： US06631641B1公开(公告)日： 2003-10-14
- 发明人: Josef Schalk , Stefan Sassen , Wilhelm Ficker , Konrad Lentner
- 申请人： Josef Schalk , Stefan Sassen , Wilhelm Ficker , Konrad Lentner
- 优先权： DE19925979 19990608
- 主分类号： G01C1900
- IPC分类号： G01C1900
摘要：
A device for determining the frequency and/or the amplitude of a vibrating structure includes a vibrating element (2) and a pair of position sensors (10, 11) for the determination of the deflection of the vibrating element (2). The position sensors (10, 11) are arranged such that their measurements during a half-wave of vibration exceed and/or are less than one another. A comparator compares the measurements of the two position sensors (10, 11) to determine a threshold value Us for the half-wave of the vibration at which their measurements are equal. A device is used for determining the duration during which the measurement of one of the two position sensors (10, 11) exceeds or is less than the threshold value Us. The position sensors (10, 11) can be capacitors whose electrodes are arranged in a step-like manner. The determination of the amplitude of the vibration is, carried out independent of a potential parallel shift of the movable element (2), such that there is no distortion of the measurement result.
信息查询
