Encoders on Drive Train DON'T WORK.

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Encoders on Drive Train DON'T WORK.

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#12

14-04-2012, 21:28

Ether

systems engineer (retired)

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Join Date: Nov 2009

Rookie Year: 1969

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Posts: 8,101

Re: Encoders on Drive Train DON'T WORK.

Quote:

Originally Posted by JamesTerm

at higher speeds it would have a distinct 30-40 radian skip between the numbers like 300.30 10x 330.2 3x 300.10x (around 47 rps).

Code:

360		CPR encoder
4		4X decoding
1440		counts per rev
47		rev/sec
67,680		counts/sec

Note the 67,680 counts per sec. I'm told the FPGA is only good for 40,000 counts/sec, but I don't know if that's per channel or for both channels of an encoder.

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