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Crosstalk Between Sensors in Multi-Channel LVDT Systems Solved

Carolyn Mathas
12/12/2013 09:31 AM EST

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_hm
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CEO
Need more graphical presentation
_hm   12/13/2013 5:14:33 PM
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@Carolyn: Thanks for information. However, few grpahical presentation would have made it more facile to comprehend. Can digital signal processing can also be applied to dispense with this problem?

 

David Ashton
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Other solutions....
David Ashton   12/15/2013 5:06:09 AM
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Hi Carolyn

Upfront let me say I know very little of LVDTs and have never used them, but they are a very elegant way of sensing linear displacement.

When you say they are inherently frictionless....although simple, they have moving parts so there must be some friction?  And in wet/icy conditions they could get frozen?

Were I to encounter the problems of crosstalk I would try something like using different excitation frequencies for each LVDT, and have a narrowband filter in each signal conditioner.   Are solutions like this used?   But Alliance's solution is also clever.  And I suspect thay know more than me about these things :-)

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