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Integrated torque sensor for e-bike motors

Helander, Björn LU (2015) EEM820 20141
Department of Biomedical Engineering
Abstract
Hoganas AB develops and build motors for e-bikes and with the current legislation the e-bikes must be equipped with a torque sensor to measure the torque applied by the rider. The motor may only assist when the rider pedals and there is no throttle on e-bikes. Hoganas want to develop a torque sensor that is integrated in the e-bike motor. Physical sensing principles for measuring torque on e-bikes are evaluated and the currently used sensors and the competitors' solutions are analyzed. Two types of torque sensor concepts are developed and evaluated with FEA (Finite Element Analysis). One of the concepts is realized in a prototype for evaluation. To further evaluate if the prototype concept is feasible the noise levels in Hoganas e-bike... (More)
Hoganas AB develops and build motors for e-bikes and with the current legislation the e-bikes must be equipped with a torque sensor to measure the torque applied by the rider. The motor may only assist when the rider pedals and there is no throttle on e-bikes. Hoganas want to develop a torque sensor that is integrated in the e-bike motor. Physical sensing principles for measuring torque on e-bikes are evaluated and the currently used sensors and the competitors' solutions are analyzed. Two types of torque sensor concepts are developed and evaluated with FEA (Finite Element Analysis). One of the concepts is realized in a prototype for evaluation. To further evaluate if the prototype concept is feasible the noise levels in Hoganas e-bike motor was measured to estimate how the sensor will be affected. The specifications for a torque sensor is established with demands and desirable properties for an integrated torque measurement system. (Less)
Please use this url to cite or link to this publication:
author
Helander, Björn LU
supervisor
organization
course
EEM820 20141
year
type
H2 - Master's Degree (Two Years)
subject
language
English
additional info
2014-08
id
5044786
date added to LUP
2015-02-05 14:04:35
date last changed
2016-02-04 04:01:44
@misc{5044786,
  abstract     = {Hoganas AB develops and build motors for e-bikes and with the current legislation the e-bikes must be equipped with a torque sensor to measure the torque applied by the rider. The motor may only assist when the rider pedals and there is no throttle on e-bikes. Hoganas want to develop a torque sensor that is integrated in the e-bike motor. Physical sensing principles for measuring torque on e-bikes are evaluated and the currently used sensors and the competitors' solutions are analyzed. Two types of torque sensor concepts are developed and evaluated with FEA (Finite Element Analysis). One of the concepts is realized in a prototype for evaluation. To further evaluate if the prototype concept is feasible the noise levels in Hoganas e-bike motor was measured to estimate how the sensor will be affected. The specifications for a torque sensor is established with demands and desirable properties for an integrated torque measurement system.},
  author       = {Helander, Björn},
  language     = {eng},
  note         = {Student Paper},
  title        = {Integrated torque sensor for e-bike motors},
  year         = {2015},
}