Torque and Angle Combo Sensor0 pages

Features

Applications

■ Non-contacting combination sensor

■ Electric power steering systems

■ Provides a differential angle for calculating

■ Electronic stability control, advanced front

the steering torque within the ECU
■ Operating temperature: -40 °C to +125 °C

lighting, park assist, navigation and lane
departure warning

Torque and Angle Combo Sensor
General Function
This non-contacting combination sensor is used in vehicles featuring electrically-controlled power-assisted steering which requires
steering angle information. The torque sensor measures the rotational deection of a torsion bar that interconnects the input and
output shafts of the steering column. The torsion bar deects in proportion to the amount of steering effort from the driver. The
output signal from the torque sensor is fed into the steering ECU which controls the amount of steering assistance provided by an
electrical motor. A higher torque corresponds to a higher level of assistance. The steering angle portion measures the direction, speed
and angular position of the steering wheel. This information can be used by other various vehicle systems such as electronic stability
control, advanced front lighting, park assist, navigation and lane departure warning. Traditional combination sensors used a clockspring
to deliver power and transfer the signal; this new sensor eliminates the requirement for a clockspring.
Please note that this document refers to general product specications which are subject to change.
General Specications

Torque Specications

Output ............................................... Analog, PWM, SENT, SPC*
Supply Voltage.............................................................. 5 ± 0.5 V*
Protection Degree................................................................ TBD*
Operating Current ........................................................ 40 mA typ.
Dark Current .........................................................................0 mA
Temperature Range ..........................................-40 °C to +125 °C

Total Travel - Mechanical ...............................No mechanical limit
Angular Measurement Range........................................ ±4 ° typ.*
Resolution..........................................................................0.005 °
Ripple .....................................................................±0.065 ° max.
Hysteresis ...................................................................0.04 ° max.
Total Error .................................................................±0.15 ° max.
Sensitivity Error ........................................................... ±3 % max.
Channel to Channel Error ...........................................0.02 ° max.
Signal Noise .............................................................0.015 ° max.

Steering Position Specications
Measurement Range ................................................. ±720 ° typ.*
Non-Linearity ............................................................. ±0.5 ° max.
Hysteresis ...................................................................... 0.5 ° typ.
Angular Resolution ............................................................... 0.2 °
Angular Velocity ....................................................±3000 °/s max.

Europe:
Bourns Sensors GmbH
Robert-Bosch-Str. 14
D-82054 Sauerlach
Phone: +49 (0) 8104 646-0

* Application Specic
For improved or different specications, contact Bourns
engineering.

The Americas:
Bourns, Inc.
1660 N. Opdyke Road, Ste. 200
Auburn Hills, MI 48326-2655 USA
Phone: +1 248 926-4088
www.bourns.com
automotive@bourns.com

REV. 02/12
Specications are subject to change without notice.
Customers should verify actual device performance in their specic applications.

Asia:
Bourns, Inc.
10F, No. 146, Sung Jiang Road
Taipei, Taiwan, 104 PRC
Phone: +886 2 2562-4117