Torque Sensor for Automotive Applications
(2015) In CODEN:LUTEDX/TEIE EIE920 20151Industrial Electrical Engineering and Automation
- Abstract
- The use of sensors in the automotive industry is increasing, improving performance and safety of the vehicles. The ambition at BorgWarner TorqTransfer Systems AB is to increase torque accuracy to optimize their powertrain solutions. Different methods to measure torque on a rotating shaft is presented and evaluated.
The method that was selected was the magnetoelastic method. This method utilizes the effect where the magnetic properties changes in a material in response to mechanical stresses. A circularly magnetized ring divided into two oppositely polarized bands was press-fitted onto the main shaft of the coupling together with an isolation ring. When the ring is subjected to torque it generates a magnetic field that is dependent on the... (More) - The use of sensors in the automotive industry is increasing, improving performance and safety of the vehicles. The ambition at BorgWarner TorqTransfer Systems AB is to increase torque accuracy to optimize their powertrain solutions. Different methods to measure torque on a rotating shaft is presented and evaluated.
The method that was selected was the magnetoelastic method. This method utilizes the effect where the magnetic properties changes in a material in response to mechanical stresses. A circularly magnetized ring divided into two oppositely polarized bands was press-fitted onto the main shaft of the coupling together with an isolation ring. When the ring is subjected to torque it generates a magnetic field that is dependent on the torque which is then measured using a agnetometer. Two shafts were fitted with the sensor concept for testing, of which one shaft was weakened to get higher stresses in the sensing element. A series of test were conducted to measure the sensors response and sensitivity. The magnetoelastic material was tested before assembling the sensor, it showed a relatively linear dependency between stresses and magnetic field, within the tested range. The test result from the weakened shaft clearly shows the torque induced variations of the magnetic field. The proposed solution demonstrates the potential of making a compact sensor with few components with possibilities to be integrated in BorgWarner products. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/7368714
- author
- Persson, Oskar LU and Persson, Gustav
- supervisor
- organization
- course
- EIE920 20151
- year
- 2015
- type
- H3 - Professional qualifications (4 Years - )
- subject
- keywords
- Polarized band, Magnetoelastic, Torque sensor
- publication/series
- CODEN:LUTEDX/TEIE
- report number
- 5352
- language
- English
- id
- 7368714
- date added to LUP
- 2015-06-23 15:48:33
- date last changed
- 2015-06-23 15:48:33
@misc{7368714, abstract = {{The use of sensors in the automotive industry is increasing, improving performance and safety of the vehicles. The ambition at BorgWarner TorqTransfer Systems AB is to increase torque accuracy to optimize their powertrain solutions. Different methods to measure torque on a rotating shaft is presented and evaluated. The method that was selected was the magnetoelastic method. This method utilizes the effect where the magnetic properties changes in a material in response to mechanical stresses. A circularly magnetized ring divided into two oppositely polarized bands was press-fitted onto the main shaft of the coupling together with an isolation ring. When the ring is subjected to torque it generates a magnetic field that is dependent on the torque which is then measured using a agnetometer. Two shafts were fitted with the sensor concept for testing, of which one shaft was weakened to get higher stresses in the sensing element. A series of test were conducted to measure the sensors response and sensitivity. The magnetoelastic material was tested before assembling the sensor, it showed a relatively linear dependency between stresses and magnetic field, within the tested range. The test result from the weakened shaft clearly shows the torque induced variations of the magnetic field. The proposed solution demonstrates the potential of making a compact sensor with few components with possibilities to be integrated in BorgWarner products.}}, author = {{Persson, Oskar and Persson, Gustav}}, language = {{eng}}, note = {{Student Paper}}, series = {{CODEN:LUTEDX/TEIE}}, title = {{Torque Sensor for Automotive Applications}}, year = {{2015}}, }