Torque sensor

  • 09-Feb-2009 04:02 EST

The Torductor-S torque sensor from ABB provides reliable and consistent noncontact torque measurement. With the sensor in the drivetrain, direct real-time torque data can be obtained from engine and transmission. The sensor is based on the magnetostrictive property of the load-carrying shaft, which is surrounded by a stationary coil arrangement. The sensor is excited by a current in the primary winding, and any change in permeability is picked up by the secondary winding. This gives an output signal directly indic­ative of the load state of the shaft. The sensor measures directly on the load-carrying shaft and can thus present a reliable signal of the current torque in the drivetrain. The device is the key component for closed-loop control and diagnosis of future combustion concepts, such as HCCI, and advanced transmissions, such as DCT. It can also be used for condition-based maintenance using the sensor to calculate the fatigue damage level of the powertrain components based on real-time torque data.

For more information, visit booth 1060 at the SAE 2009 World Congress.­
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