How to calculate max velocity Mesa card can handle

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15 Sep 2021 18:59 #220732 by PCW
That looks correct but that is the velocity bound of the stepgen.
The actual maximum joint velocity should only be about 75% to 90%
of this value so there is some headroom.
The following user(s) said Thank You: Clive S

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15 Sep 2021 19:26 #220735 by Clive S

That looks correct but that is the velocity bound of the stepgen.
The actual maximum joint velocity should only be about 75% to 90%
of this value so there is some headroom.

 

Thanks for confirming Peter.
Just for clarification is the steps_per_turn the screw or the motor shaft?

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15 Sep 2021 21:07 #220738 by PCW
The screw, though you could add a motor/screw ratio for belt driven
ballscrews

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15 Sep 2021 21:39 #220741 by Clive S

The screw, though you could add a motor/screw ratio for belt driven
ballscrews


I must be missing something. Motor screw ratio !!

re: 1E9*Lead_Screw_pitch / (reduction*steps_per_turn*(StepLen+Stepspace))

I thought that the reduction from the motor to the screw controlled that in my case.
1.8 reduction from the motor_belt_screw.

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