Magnetic Encoders

Principle: Measure angular position using a magnetized rotor and magnetic sensors (e.g., Hall effect or magnetoresistive).

Advantages:

• Durable in harsh environments (dust, moisture, vibration)
• No contact wear (non-contact sensing)
• High shock and vibration tolerance
• Lower cost than optical encoders

Limitations:

• Susceptible to external magnetic fields
• Lower resolution compared to high-end optical encoders
• Temperature sensitivity affects magnet and sensor

Applications: Motor control, robotics, automotive systems, industrial automation.

Common ICs: AS5600, AS5048A, MA730.