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eMotor Rotor Position Sensors
Home > Non-contact Position Sensors >

Inductive high-speed EV rotor position sensors

Accurate feedback on the angular position, direction, and speed of the rotor shaft is essential to optimize control of the motor inverter and drive electric motors with the best possible efficiency. With lower weight, smaller dimensions, immunity to stray fields and comparably lower cost, Piher Sensing System’s eMotor Rotor Position Sensors offer a true alternative to conventional encoders, magneto-resistance, single/multi coil, and VR resolvers. Furthermore, inductive eMotor rotary position sensors can be designed to be ASIL-D compliant on sensor level.

Inductive sensors use the physical principle of induction in a wire loop and eddy currents to detect the position of a solid metallic target rotating above a set of coils. This allows a reduction in parts and higher design flexibility (e.g. through-shaft, end-of-shaft and arc configurations).

Specifications

Functional safety on sensor level

Development according to functional safety ASIL-D on sensor level possible.

Immune to magnetic stray fields

No shielding required as inductive technology is not affected by electromagnetic stray fields.

True Power-on Sensor
Delivers accurate motor position directly on start-up.
No additional electronics needed

A direct, demodulated analog output means no additional electronics are needed to calculate rotor position.

Low weight and compact dimensions

Reduced size and weight compared to resolvers.

Made for harsh environments
The rugged package protects the sensor from dust, moisture, vibration and extreme temperatures for usage in the most demanding environments. 
  • Up to 600.000 (el) rpm speed
  • Robust to tilt, misalignment and air gap variations
  • ESD and short-circuit protection
  • High resolution, even for small angle ranges
  • Rotation sensing up to a full turn of 360º

Integration options

  • End of shaft on-axis
  • Through/hollow-shaft
  • Arc / Segment
  • Linear displacement

Inductive High-Speed Sensors Supplier for Motor Position Sensing with High Stray Field Immunity.

    Rotary End-of-Shaft Inductive eMotor Rotor Position Sensor

    Rotary Through-Shaft Inductive eMotor Rotor Position Sensor

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