Funny, as long as you dear friends felt arrogant and aggressive attacking me personally, I got a lot of answers. After I listed what Trinamic writes on their website, silence is the response. It is easier to attack and be aggressive and arrogant when you feel to be better informed!
I do accept and confess that the interpretation I made after having done those experiments were partly wrong. The cause that made me run into that trap was due to the fact that I did not do those experiments with a load. That is why I did assume that applying the Power equation:
P = V * A
I assumed this would compute a higher torque and this to be due to the higher voltage.
Correct is that the torque a stepper can deliver is only dependent on the amount of current flowing through it. The torque can be increased by 20% by increasing the current by modifying the duty cycle of the PWM. The higher stepping frequency is achieved by applying a higher voltage that enables PWM and adding the applied voltage to the induced inverse polarity and has it prevent the effective voltage drop below the nominal value. Of course, rather factors within the stepper also have their influence resulting in the curve Trinamic shows.
So, even having been attacked in the personal way that took place I was able to restudy the topic and learn what I wrote.
I do accept and confess that the interpretation I made after having done those experiments were partly wrong. The cause that made me run into that trap was due to the fact that I did not do those experiments with a load. That is why I did assume that applying the Power equation:
P = V * A
I assumed this would compute a higher torque and this to be due to the higher voltage.
Correct is that the torque a stepper can deliver is only dependent on the amount of current flowing through it. The torque can be increased by 20% by increasing the current by modifying the duty cycle of the PWM. The higher stepping frequency is achieved by applying a higher voltage that enables PWM and adding the applied voltage to the induced inverse polarity and has it prevent the effective voltage drop below the nominal value. Of course, rather factors within the stepper also have their influence resulting in the curve Trinamic shows.
So, even having been attacked in the personal way that took place I was able to restudy the topic and learn what I wrote.