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ACT-05 · ROTARY ELECTROMECHANICAL MOTION

Stepper Motor Simulator

An interactive electromagnetic & mechanical simulation of a hybrid two-phase stepper motor. Examine stator magnetic coil excitation, rotor teeth reluctance alignment, phase vector dynamics, step ringing, and wave drive vs. microstepping physics.

Interactive Electromagnetic Stator & Rotor Diagram ACTIVE PHYSICS
N S A B
REAL-TIME COIL WAVEFORM & ROTOR RESPONSE
I_Phase A I_Phase B Position (θ)
STEPPER CONTROL CENTER

Cycle & Step Execution

Drive Mode Scheme

20 PPS (6 RPM)
0.0 mN·m
Moderate

Diagnostic Layers

Live Motor Telemetry

  • Mechanical Position0.0°
  • Step Count / Sequence0 steps (Phase 0)
  • Electrical Angle (θ_e)0.0°
  • Coil Currents (A / B)0.00A / 1.00A
  • EM Torque / Detent0.00 mN·m
  • Step Error / Lag0.00°

How Stepper Physics Works

  1. Electromagnetic Poles: Two orthogonal phase windings (A & B) surround a multi-toothed permanent magnet rotor core.
  2. Minimum Reluctance Alignment: When current flows through phase coils, stator teeth magnetize, pulling the nearest rotor teeth into alignment to minimize magnetic path reluctance.
  3. Sequential Commutation: Shifting coil currents advances the stator's magnetic vector, causing the rotor to snap or step forward smoothly in fixed increments.
  4. Microstepping Interpolation: By varying current smoothly via sinusoidal PWM ($I_A = I_{\max}\cos\theta_e, I_B = I_{\max}\sin\theta_e$), rotor vibration and step ringing are eliminated.