Hi Er.s
I'm working with my project which was driving a bipolar stepper motor in high speed (600 rpm). I'm using L297, MOSFET driver, H-Bridge(power MOSFETS). And MUC to feed clock pulse to L297. The current was sensed by a simple series resistor. My motor was running well without any noise and jerks. The problem was, when i'm trying to run the motor in some more higher speed, the motor losses its torque and strucking. ( the motor shaft was in a mechanical gear arrangment to move a small roller). Is there any special way to feed the pulses to run with same torque in higher speed? where i've to concentrate? (current sensing method?) i tried even by directly grounding the current sensing pins of L297 ( disabling current sensing)
Please providse me a opt solution to go further steps. Thank you all great Egineers.
-- Suresh
I'm working with my project which was driving a bipolar stepper motor in high speed (600 rpm). I'm using L297, MOSFET driver, H-Bridge(power MOSFETS). And MUC to feed clock pulse to L297. The current was sensed by a simple series resistor. My motor was running well without any noise and jerks. The problem was, when i'm trying to run the motor in some more higher speed, the motor losses its torque and strucking. ( the motor shaft was in a mechanical gear arrangment to move a small roller). Is there any special way to feed the pulses to run with same torque in higher speed? where i've to concentrate? (current sensing method?) i tried even by directly grounding the current sensing pins of L297 ( disabling current sensing)
Please providse me a opt solution to go further steps. Thank you all great Egineers.
-- Suresh