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Stepper motor torque

rotary actuator, stepping motor, step motor, brushless DC electric motor

Problem Type:
Plane-parallel problem of DC magnetics

Geometry:
Stepper motor Stepper motor torque vs. rotor position Ø60mm Rotor Stator A1 C2 C1 B1 B2 A2

Stator length Lz = 30 mm.

Given:
Stator teeth number 88.
Coil current I = 4*100 Ampere-turn
Steel magnetic permeability μ - BH-curve::

Task:
Calculate torque vs. rotor position.

Solution:
Parametric tool LabelMover is used to automate calculations.

Results:
Torque vs. rotor position

Stepper motor torque

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