I read the page [www.micromo.com] but I am not entirely sure that I understand.
Is the reduced torque only a problem for holding the given position (microstep) and for reverse moves? I mean if the sum of the micro steps is still the same (and better) as a normal step?
For example;
With 16 microsteps, then each of my microsteps will have 9.8% of the normal full step incremental torque.
Let's say I apply a high load, say I apply 99.9% of a normal step - So without microstepping my stepper would barely have managed and it would have moved the entire 1 normal step (or full 16 microsteps)
So my motor starts microstepping, but it is not moving at first, it is building torque:
Step - Percent of full torque:
1st - 9.8 %
2nd - 19.6%
3rd - 29.4%
4th - 39.2%
....
10th - 98%
11th - 107.8%
And then it moves on the 11/16 step? But does it move all 11 steps ? If that is correct then I don't actually lose anything from microstepping. I would not have gotten myself a better performance had I used no microstepping.
But if it instead is that it only moves 1 of the 11 steps when it reaches 11, so that, once it can overcome the torque load, it moves just one microstep but overcomming that 1 microstep reduces the available torque by 9.8% and then we are below the required threshold and motor stops.
At the end of the day I am asking because I have a Z axis motor driving a trapezoidal screw and the motor is struggling at times. I am thinking if it would help to remove the jumpers to microstepping. But the thing is my "jumpers" are soldered connections so it is hard to test and also I would like to understand steppers better.
Is the reduced torque only a problem for holding the given position (microstep) and for reverse moves? I mean if the sum of the micro steps is still the same (and better) as a normal step?
For example;
With 16 microsteps, then each of my microsteps will have 9.8% of the normal full step incremental torque.
Let's say I apply a high load, say I apply 99.9% of a normal step - So without microstepping my stepper would barely have managed and it would have moved the entire 1 normal step (or full 16 microsteps)
So my motor starts microstepping, but it is not moving at first, it is building torque:
Step - Percent of full torque:
1st - 9.8 %
2nd - 19.6%
3rd - 29.4%
4th - 39.2%
....
10th - 98%
11th - 107.8%
And then it moves on the 11/16 step? But does it move all 11 steps ? If that is correct then I don't actually lose anything from microstepping. I would not have gotten myself a better performance had I used no microstepping.
But if it instead is that it only moves 1 of the 11 steps when it reaches 11, so that, once it can overcome the torque load, it moves just one microstep but overcomming that 1 microstep reduces the available torque by 9.8% and then we are below the required threshold and motor stops.
At the end of the day I am asking because I have a Z axis motor driving a trapezoidal screw and the motor is struggling at times. I am thinking if it would help to remove the jumpers to microstepping. But the thing is my "jumpers" are soldered connections so it is hard to test and also I would like to understand steppers better.