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4000 tic encoders. Why?


Guest peepshow
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Guest peepshow

I know little about encoders.  Have just seen a a pair on ABS rated at 4000 tics per rev.


Now dividing this number by 360 degrees doesn't give a nice round number that I expected.


It's 4000/360 = 11.11111 recurring !!


So why not a nice round number, say like 10 giving 3600 tics per rev? Why 4000?


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I'm not saying that's correct but it does seem to fit in. I found this -


 


"The process of resolving each encoder cycle into four parts (as described above) is called quadrature, and one quarter-cycle is called a tic. The number of tics-per-revolution is equal to four times the number of cycles-per-revolution. Encoder manufacturers commonly express their encoder resolutions in cycles-per-revolution, but the astronomical community most commonly uses tics-per-revolution."

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I'm not saying that's correct but it does seem to fit in. I found this -

 

"The process of resolving each encoder cycle into four parts (as described above) is called quadrature, and one quarter-cycle is called a tic. The number of tics-per-revolution is equal to four times the number of cycles-per-revolution. Encoder manufacturers commonly express their encoder resolutions in cycles-per-revolution, but the astronomical community most commonly uses tics-per-revolution."

 

It also fits very nicely into the Steps of a stepper motor they work in 4's as well.

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