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Sonsivri > Electronics > Projects (Moderators: bbarney, pickit2) > wanted : resolver to Quadrature conversion
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cncbasher
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« on: September 17, 2011, 06:24:15 18:24 »
i'm looking for a project or fpga implementation of taking an resolver input and output in quadrature , to enable an old 80's mill to be updated
to a more modern control system as EMC2 .

anyone have a workable solution , or idea's , removing the resolvers and changing to encoders is not an option on this machine .

 
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DarkClover
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« Reply #1 on: September 18, 2011, 06:07:28 18:07 »
I'm not that familiar with FPGA yet but why don't you use some Schmitt-Trigger to change the sine/cosine waves to a encoder like signal ?

It's just an idea but then you have at least a rectangular signal which can be converted to TTL level for further process.
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« Reply #2 on: September 18, 2011, 10:46:16 22:46 »
http://www.iele.polsl.pl/elenota/Freescale/an1942_d.pdf
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ZASto
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« Reply #3 on: September 23, 2011, 07:58:27 19:58 »
http://pico-systems.com/resolver.html
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