Hi,
I am working on a micro-controller based bipolar micro-step motor controller. Up to now I did below tasks
I build two hip4081 based h-bridge and connect them to my micro board.
I connect the hip4081 AHI and BHI to +5v. I send PWM signals to the ALI and BLI.
I generate sin cos values with excel and store them in an array in the micro-controller. I use an interrupt to listen the step and dir inputs from mach cnc software to incrise and digrese the index of the array. Then I send the table value to the h-bridges as PWM . I am using 128 micro stepping table.
Everything is nice. The motor turns smoothly. The problem is the speed. What must I do to turn the motor faster.
Regards,
Nuri Erginer