PEDELEC | Linksium
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For a better consideration of the human strength

profilePhoto   Christine Melay
Linksium Contact Christine Melay +33 (0)6 21 77 19 90
1001 PEDELEC unsplash photos Jc Bs O89b3g I


  • No mechanical sensor required
  • Reduce your manufacturing cost
  • Easy implementation

Key words

  • Sensorless
  • Performance
  • Torque measurement

Intellectual Property

  • 1 patent
  • 1 software





Linksium Continuum

  • Maturation
  • Commercialization


  • Available licenses


The measurement and supervision of the forces involved in the interaction between an energy source and a mechanical system is fundamental for the performance of different applications. Currently these forces are measured by adding transducer materials in the mechanism, requiring redesign and regular calibration.


The control department of GIPSA-Lab has developed a high performance algorithm able to obtain, in real time, applied forces over a dynamic system only by using position information. This can be adapted to different applications and implemented in standard microcontrollers.


  • This technology does not require mechanical transducers.
  • Reactive to fast variations+ sensitive to small amplitudes: Reliable measurement.
  • Mechanical model, good Signal/Noise ratio: Higher precision.
  • No calibration: No maintenance required.

State of progress

This technology has been adapted to obtain the human torque on cycling applications. The performance and robustness of the algorithm has been validated on a laboratory test-platform. The development of the first prototype and the tests in real environment have confirmed the expected results.


  • Cyclist torque estimation in pedaling electric cycles (PEDELEC).
  • Pedaling torque and power supervision in cycling monitoring systems.
  • Human force estimation to improve synergy in Cobots.