as far as I know some gyroscopes have an interna LP filter at the output such as https://www.systron.com/sites/default..._l-qrs11_3.pdf: Bandwidth >60 Hz.
Questions:
1. Why LP filter? What if no LP filter?
2. What’s the meaning of „-90 phase shift“?
3. Are LP filters generally used for other types of sensors?
Hi,
I wonder .. because there is nothing mentioned given in the datasheet.
Is this just assumption or did you read it somewhere? If you read it show us where.
Klaus
Some responses are more than intuitive, as for example filtering signals above 60Hz suggests eliminating the effect of vibration from loose (not glued) slides on laminated transformers, although gyroscopes are intended to be embeeded (where not often the power supply is AC) . By the way, gyroscopes, unlike accelerometers, are not designed to give quick response, but to act as a baseline for steering direction, and this may explain to you why having low pass filtering.as far as I know some gyroscopes have an interna LP filter at the output such as https://www.systron.com/sites/default..._l-qrs11_3.pdf: Bandwidth >60 Hz.
Yes - I could not find any mentioning of -90 deg....
as for example filtering signals above 60Hz suggests eliminating the effect of vibration from loose slides on transformers...
(I understand that it means low frequencies are removed and high frequencies are passed on to the output...)
So it’s a bit strange to use „-90deg phase shift“?
So it’s a bit strange to use „-90deg phase shift“?...
Why "1/2 output", that's just a speculation without knowing the magnitude and phase characteristic. The relation will be different for each filter order and steepness. In case of first order, -90 degree is e.g. the asymptotic phase for f >> fc.filters DO produce phase shifts and 90 deg phase shift is the 1/2 output point...
I don´t agree.Since the unit only has one analog output and phase is a relative measurement, it has no meaning
Why "1/2 output", that's just a speculation without knowing the magnitude and phase characteristic. The relation will be different for each filter order and steepness...
Since the unit only has one analog output and phase is a relative measurement...
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