Comparison of Torque Sensor Technologies | Transense Technologies

This video provides an overview of the different sensor technologies used to measure torque in applications such as aerospace, automotive and industrial systems. Including:
• Strain gauge sensors
• Displacement sensors
• Magnetoelastic or Magnetostrictive Sensors
• Transense Surface Acoustic Wave or SAW sensors
The video shows how these key sensor technologies measure torque and discusses the advantages and disadvantages of each type.
For more content on SAW technology:
- Transense Website: www.transense.com/
- Transense on LinkedIn: / transense-technologies...
Contact us to discuss your torque-sensing requirements: www.transense.com/contact-us

[@Maddinhpws]

This was a great video.
Nothing unnecessary, supported by good graphics. Solid A+ performance.

[@transense]

Thank you for the kind feedback, it's much appreciated. If there is any other content around torque sensing you would like to see please let us know.

[@theniii]

love how you finish every sentense like it's not

[@transense]

Thanks for the feedback, this was a tough one to edit down to a reasonable length without being too rushed, so does read a bit like bullet points

[@user-ih3kk8lh1v]

Excellent, thanks very much

[@transense]

You're welcome, we're glad you enjoyed the video!

[@pieterke1234]

Great overview! How would the wireless torque sensor of Forcebit fit in?

[@transense]

There is not a huge amount of information on the Forcebit website, but it appears that their torque sensor is using 2 accelerometer sensors mounted on a shaft, this will rely on relative differential torsional acceleration between the 2 elements and then locally powered telemetry inside the sensor unit, similar principle to the displacement sensors in the video. Whilst this will be useful in test and measurement applications it is very different from the Transense SAW measurement principle which directly measures the surface strain of the shaft using only passive components on the shaft i.e. no battery power is needed, meaning this is well suited to integration into production systems as it is a “fit and forget” solution. The Transense technology can also measure a static torque so it does not require the shaft to be rotating.
The downside of the Transense technology in comparison is that it requires the shaft to be designed specifically and adapted to be installed with the AQP sensing elements and control the strain field.
In summary, the Transense solution is very accurate, durable, and reliable so it is more suited to a permanent application but has a relatively high cost to apply. The Forcebit system looks like a quick solution that will get a measurement quickly but wouldn’t be something you could design into a production system due to the need for on-shaft electronics.

[@casacm2381]

Thanks a lot

[@transense]

Happy to help!

[@khani-marwat8835]

transverse saw technology has zero NM setting issues due to values drifting g , you need to give enough time before each operation

[@transense]

@@khani-marwat8835 Thank you for your comment; Transense does not use Transverse SAW technology, transverse SAW has displacements in the plane normal to the propagation direction and often just in the surface plane (shear-horizontal waves). We use the Rayleigh type of SAW that mostly has normal to the surface and longitudinal displacement components.
In terms of zero drift the design of our SAW sensing elements and the adhesives used for bonding allow us to keep the creep which would result in zero drift to a very low level, in a correctly designed system this would not usually cause any issues with high-speed transient torque measurement.