Nicolas Benezan wrote:
> Jon Elson wrote:
>> Yes, standing still, at rated holding torque, the error is almost
>> exactly two full steps.
>> If the error ever exceeds 2 full steps, the motor will jump to the next
>> detent, which is every 4 full steps.
>>
>
> Hi,
>
> not exactly, I think the correct formula is
>
> torque = sin (pi/2 * dp) * rated torque
>
> with dp = position deviation in full steps. So the maximum torque is
> delivered at one full step from the unloaded position. It decreases to zero
> between one and two full steps and becomes negative between 2 and 4 full
> steps
OH boy! You are absolutely right!

Jon