On this page

• Theory corner
  • FOC fundamentals
  • Control building blocks
  • Alignment procedures

Theory corner

Core concepts and math behind the Arduino SimpleFOClibrary implementation. If you want the “why” behind control modes, filters, and alignment, start here.

FOC fundamentals

• Torque Control Methods in FOC — why voltage mode works
• Coordinate Transformations in FOC — modulation methods and FOC fundamentals.
• Hybrid stepper motor theory — driving 2-phase steppers with 3-phase BLDC drivers.

Control building blocks

• Low-pass filter theory — filter equation and implementation.
• PID controller theory — control equation and implementation.
• Tunning the current control loop — pole placement method for tuning current loop.

Alignment procedures

• Sensor-Motor alignment procedure — rotor alignment and sensor offset.
• Current sense alignment procedure — automatic phase alignment.

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