Noncontact sensor

  • 29-Jun-2010 01:21 EDT
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Lord offers TFD noncontact magnetic sensors for steer-by-wire (SBW) applications. TFD devices are available in 5 and 12 N·m (4 and 9 lb·ft) configurations and produce a continuously variable resistive steering torque, delivering high-fidelity tactile feedback and control to the operator. Multiple rotational sensors that translate operator movement of the steering wheel into electrical signals for controlling vehicle direction are integrated into the device. A single rotating magnet located close to the sensor chip provides magnetic excitation and offers improved reliability, resolution up to 12 bits, a programmable range of outputs, compact size, and absolute position as the sensor output can be aligned to a specific steering wheel position. The sensor and magnet are not sensitive to alignment issues, improving packaging, and the sensing function can be integrated into a single PCB with the other electronics.

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