Breaking News
Industrial Control DesignLine Blog

Crosstalk Between Sensors in Multi-Channel LVDT Systems Solved

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

 2 comments   post a comment
NO RATINGS
View Comments: Newest First | Oldest First | Threaded View
David Ashton
User Rank
Blogger
Other solutions....
David Ashton   12/15/2013 5:06:09 AM
NO RATINGS
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 :-)

_hm
User Rank
CEO
Need more graphical presentation
_hm   12/13/2013 5:14:33 PM
NO RATINGS
@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?

 

Top Comments of the Week
August Cartoon Caption Winner!
August Cartoon Caption Winner!
"All the King's horses and all the KIng's men gave up on Humpty, so they handed the problem off to Engineering."
5 comments
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Radio
LATEST ARCHIVED BROADCAST
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.
Flash Poll