发明名称 |
Vorrichtung und Verfahren zur Bestimmung von Frequenz und Amplitude einer schwingenden Struktur, insbesondere zur Messung von Beschleunigungen oder Drehraten |
摘要 |
A device for determining the frequency and/or the amplitude of a vibrating structure includes a vibrating element (<HIL><PDAT>2</BOLD><PDAT>) and a pair of position sensors (<HIL><PDAT>10, 11</BOLD><PDAT>) for the determination of the deflection of the vibrating element (<HIL><PDAT>2</BOLD><PDAT>). The position sensors (<HIL><PDAT>10, 11</BOLD><PDAT>) 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 (<HIL><PDAT>10, 11</BOLD><PDAT>) to determine a threshold value U<HIL><PDAT>s </SB><PDAT>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 (<HIL><PDAT>10, 11</BOLD><PDAT>) exceeds or is less than the threshold value U<HIL><PDAT>s</SB><PDAT>. The position sensors (<HIL><PDAT>10, 11</BOLD><PDAT>) 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 (<HIL><PDAT>2</BOLD><PDAT>), such that there is no distortion of the measurement result.</PTEXT> |
申请公布号 |
DE19925979(B4) |
申请公布日期 |
2004.07.01 |
申请号 |
DE1999125979 |
申请日期 |
1999.06.08 |
申请人 |
EADS DEUTSCHLAND GMBH |
发明人 |
SCHALK, JOSEF;SASSEN, STEFAN;FICKER, WILHELM;LENTNER, KONRAD |
分类号 |
G01P9/04;G01C19/56;G01H11/06;G01P1/00;G01P1/04;G01P15/14;(IPC1-7):G01P15/14 |
主分类号 |
G01P9/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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