Bourns announced a new combined torque and angle sensor designed
for Electric Power Assisted Steering Applications (EPAS) and other
automotive systems. The new combined sensor provides torque and steering
angle measurement in a single package, replacing two discrete sensors
for significant space and cost savings.
Based on the company's Hall Effect (HE) non-clockspring torque sensor
technology, the combined sensor uses driver input to measure the
steering torque while simultaneously converting the rotation speed and
direction of the steering wheel. The torque portion of the sensor is
designed specifically for EPAS, and the steering angle signal can be
used in a variety of automotive systems including Electronic Stability
Control (ESC), Advanced Front Lighting Systems (AFLS), Navigation, and
Assisted Parking Systems.
Several variations of this combined torque and angle sensor are
available, including dual and single channel options on the torque
portion, depending on redundancy requirements. The steering angle sensor
can support incremental or absolute measurement. The device is suitable
for column or rack mounted EPAS and has been designed to sustain
temperatures from -40 to +140°C. The combined sensor provides CAN
steering sensor output in addition to an analog torque signal. The
torque sensor output can also be configured to support PAS4, PSI5 and
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