Stepper Motor RPM
Stepper Motor RPM
(OP)
What do I need to know to calculate the RPM of a stepper motor? I know the type of motor, number of pulses, voltage - and that's about it. Thanks - Dave
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RE: Stepper Motor RPM
RE: Stepper Motor RPM
RE: Stepper Motor RPM
RE: Stepper Motor RPM
Steppers are designed to receive voltage pulses from a controller; think of a rotor with 200 poles. The same analysis rules for AC/DC motors don't apply. Pulses will make the rotor increment 1 rotational step. Generally motors are designed with 1.8 degree of rotation steps (200 steps/rev). Pulse streams are fed to the motor in a acceleration ramp-up / steady velocity / deceleration ramp-down profile. RPM is determined by the controller capability and pulses/revolution resolution, can be 1000's RPM.
Alternatively, modern stepper controllers can be "microstepping" controllers. These divide each default step into fractional steps. This makes the effective resolution 10,000's of pulses/revolution.
To add a corollary to Mike's comment, call the CONTROLLER manufacturer.
TygerDawg
Blue Technik LLC
Virtuoso Robotics Engineering
www.bluetechnik.com
RE: Stepper Motor RPM
Please also note they don't ever really rotate continuously. When the state of the voltage pattern applied to the coils changes, the stepper moves, usually within a millisecond, and then stops, or if friction or inertia is too large, it moves a little, stalls, and falls back to where it was.
To learn more, Google leenhouts stepper
Mike Halloran
Pembroke Pines, FL, USA