Weighing apparatus having an automatic filter adjusting capability
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United States of America Patent
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-
Aug 7, 2001
Grant Date -
N/A
app pub date -
Oct 5, 1998
filing date -
Oct 8, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to provide a combination weighing apparatus having an automatic filter adjusting capability which is effective to secure a weighing accuracy and also to adjust a filter characteristic of a digital filter having a short response time, the filter characteristic is automatically adjusted, based on a result of comparison of respective vibration components U of filtered weight signals FW1 to FWn with a permissible level US of the vibration components, so that the respective vibration components U of the filtered weight signals FW1 to FWn can attain a value approximating to the permissible level US, but not exceeding the permissible level US. In this way, by damping the vibration components U down to a value within the permissible level US, the weighing accuracy can be secured and, on the other hand, by damping the vibration components U down to a value approximating to the permissible level US, the filter characteristic can be obtained quickly in a short time.
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