mabbri
Newbie level 5
stepper motor resonance
Hi....
I've read about "mid-band resonance" that causes the stepper to stall when running at low steping rates. The oscillation may be so strong that the motor has no more torque in certain step frequency ranges and looses completely its position. This is due to the fact that the rotor of the motor, and the changing magnetic field of the stator forms a springmass-system that may be stimulated to vibrate. Though it is possible to accelerate through the resonant region, it is not possible to operate the motor continuously in that speed band. This is because the oscillation that causes the motor to stall takes from half a second to 5 seconds to build to an amplitude sufficient to stall the motor.
I'm doing a microstepping drive using peak detecting current control and I need to know how to implement "Anti Resonance control" or "Mid-Band compensation" that utilizes pulse placement techniques to minimize mid-speed torque loss.
thank in advance.
Hi....
I've read about "mid-band resonance" that causes the stepper to stall when running at low steping rates. The oscillation may be so strong that the motor has no more torque in certain step frequency ranges and looses completely its position. This is due to the fact that the rotor of the motor, and the changing magnetic field of the stator forms a springmass-system that may be stimulated to vibrate. Though it is possible to accelerate through the resonant region, it is not possible to operate the motor continuously in that speed band. This is because the oscillation that causes the motor to stall takes from half a second to 5 seconds to build to an amplitude sufficient to stall the motor.
I'm doing a microstepping drive using peak detecting current control and I need to know how to implement "Anti Resonance control" or "Mid-Band compensation" that utilizes pulse placement techniques to minimize mid-speed torque loss.
thank in advance.
