Re: Stars drift with high resolution encoders


Russell R
 

Hi Joerg,

Here is what happens with Cascade mode:

a. Calculate the position error based on the encoder.

b. Run the motor at the sidereal rate + a rate that will bring the encoder error down to zero in a given time.

c. When the given time expires, it will be running the motor at the sidereal rate again.

d. Repeat.

Cascade mode is recommended to have at least 13M ticks, so it could be the resolution of your encoders is not enough.

Have you tried Tick Management mode?

Russell R.

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