Eddy-current technology for angular sensors Archives - EFI Automotive

Inductive through-shaft position sensor for e-motor

By | | No Comments

The EMPOS (Electrical Motor POsition Sensor) sensor meets the control needs of synchronous electric motors used to drive all-electric and hybrid vehicles.

The sensor accurately measures the angular position of the rotating shaft to optimize control of the motor inverter.

EMPOS offers significant advantages in terms of integration and EMC robustness. Even more, it integrates signal processing to deliver the angle in either analog or digital form.

EMPOS is based on inductive eddy-current technology.

The primary and secondary windings are printed on the sensor PCB and connected to an ASIC. The sensor components are encapsulated in a sealed package to make them robust with respect to the motor environment.

The sensor accurately detects the angular position of a toothed trigger wheel fixed to the rotor. Position information is delivered to the motor controller in the form of an analog or 12-bit digital signal.

Linear position sensor for clutch

By | | No Comments

This sensor is used to measure a linear or rotary displacement in various applications.

For manual transmissions it is used for the clutch position on the master cylinder or the clutch release bearing. It can also be used at gearshift lever to detect all gears position.

For dual clutch gearboxes, it measures the position of the forks for ever more responsive, accurate and reliable gear changes.

For automatic transmissions, the position sensor provides information to the ECU about the gear lever (TRS).

For the electrically actuated transmissions, it detects the position of the gear selector.

This multi-purpose sensor can be used as position sensor for the instrumented intake manifolds or automatic transmissions actuator or cam position sensor in the variable lift cam engines.

With a properly designed magnetic circuit it can meet all the position detection needs.

Technical characteristics

  • Absolute Rotary and Linear Position Sensor
  • Programmable output transfer linearization functionality that provides high output accuracy and linearity
  • Range selection and offset programming by EFI or customer
  • Selectable output mode: Analog or PWM
  • Open/short on-board diagnostics and voltage protections
  • Temperature-stable, mechanical stress immune
  • 12 bit resolution
  • Wide ambient operating temperature range: –40°C to 150°C
  • Sensor tested for vibrations over 1000Hz (36 parts during 99 hours) during DV
  • Standard package for EFI Automotive worldwide process.

Inductive end-of-shaft position sensor for e-motor

By | | No Comments

The EMPOS (Electrical Motor POsition Sensor) sensor meets the control needs of synchronous electric motors used to drive all-electric and hybrid vehicles.

The sensor accurately measures the angular position of the rotating shaft to optimize control of the motor inverter.

EMPOS offers significant advantages in terms of integration and EMC robustness. Even more, it integrates signal processing to deliver the angle in either analog or digital form.

EMPOS is based on inductive eddy-current technology.

The primary and secondary windings are printed on the sensor PCB and connected to an ASIC. The sensor components are encapsulated in a sealed package to make them robust with respect to the motor environment.

The sensor accurately detects the angular position of a toothed trigger wheel fixed to the rotor. Position information is delivered to the motor controller in the form of an analog or 12-bit digital signal.