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MR-Sensors
Where do you use MR-sensors?
MR-sensors, evaluation electronics and magnetic scales from Sensitec are in use everywhere, where movement is being controlled and steered, where paths, angles, positions, electric or magnetic fields are measured and detected.
What is the MR effect?
The MagnetoResistive Effect, "MR-Effect", has been known for 150 years. However, its use in sensor applications was first made practically possible through the development of thin-film technology some 30 years ago.
You will find us
… at the following exhibitions and fairs.
Our exhibition team is looking forward to presenting you our new products and innovations and to giving you technical advice for your individual measuring application.
AUTOMOTIVE
High resolution, high reliability and robustness are just some of the key features of MR sensors that make them attractive in automation applications. Whether in assembly machines, industrial robots or handling equipment, MR sensors provide high availability and high performance at reasonable cost.
Typical applications
- Steering angle sensor for power steering
- Torque sensor for active steering
- Position sensor for pedal travel measurement
- Current sensor for hybrid power plant
- Valve position measurement for motor test stand
APPLICATION EXAMPLE: TORQUE MEASUREMENT FOR ACTIVE STEERING SYSTEM
Requirements
Measurement of torque for an active steering system in a car.
Key Specifications
- Measurement angle:
- 15° (6° actually used)
- Resolution:
- < 0.1°
- Accuracy:
- 0.3°
- Temperature range:
- -40° C up to +125°C
Solution from Sensitec
Scanning of a pole ring with an angle sensor of the AA700 family. The pole ring and angle sensor are connected with each other via a torsion shaft. Signal conditioning is executed by a customer-specific ASIC directly at the sensor.
Why use MR sensor technology?
- Simple assembly and adjustment
- No further calibration necessary after final assembly
- No mechanical wear in the measurement system
- Resistant to dust and oil