Automotive Magnetic Encoder

Automotive magnetic encoders employ magnetic field sensing technology to achieve non-contact position measurement by detecting magnetic field variations generated by rotating permanent magnets. Suitable for automotive motor control, steering systems and wheel speed detection, they feature resistance to oil contamination and vibration. Developed specifically for automotive electronic systems, this high-reliability magnetic encoder employs integrated magnetic circuit (IMC) technology and a horizontal Hall array to achieve precise angle/position detection. Certified to ASIL-B functional safety standards, it operates within a wide temperature range of -40°C to 150°C, ensuring long-term stable performance under harsh in-vehicle conditions. Magnetic encoders comprise permanent magnets (radially/axially magnetised), magnetic sensors (Hall elements or TMR), and signal processing circuits. They convert mechanical displacement into digital signals (e.g., A/B/Z pulses or CAN bus output) via the Hall effect. Their core advantage lies in environmental resilience, offering superior dust and electromagnetic interference resistance compared to optical encoders. Accuracy: ±0.05° to ±0.5°, with resolution up to 12 bits. Protection rating: IP67, meeting automotive electronics dust and water resistance requirements. Rotational speed range: Up to 20,000 RPM (coaxial design models). Output interfaces: Supports ABZ incremental, SSI absolute, and UVW commutation signals.

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