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Development of a Contactless Hall Effect Torque Sensor for Electric Power Steering
Technical Paper
2006-01-0939
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, we will present an innovative torque sensor design which could be preferably used in Electric Power Assisted Steering (EPAS) application. This torque sensor is a non-contact Hall effect design. The specificity of this structure is its ability to measure the shift angle between two rotating shafts linked by a torsion bar. This measurement is done with stationary electronic components. This unique structure generates enough magnetic flux variation to measure angular shifts from +/-1° to +/-8° with low-cost standard Hall ASICs available from various suppliers. This torque sensor has convinced automotive industry due to its good performances, its compact dimension and a price compatible with the market expectation for this application.
This paper will explain the basic magnetic principle of this torque sensor, the improvements which have lead to a structure compatible with automotive industry requirements, some measurement results and possible sensor integration in the application.
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Authors
Citation
Angleviel, D., Frachon, D., and Masson, G., "Development of a Contactless Hall Effect Torque Sensor for Electric Power Steering," SAE Technical Paper 2006-01-0939, 2006, https://doi.org/10.4271/2006-01-0939.Also In
References
- Passenger Car Steering Systems - Preparation for the Technology of Tomorrow 26-27 04 2005 Essen SEEWALD Alois Dr.-Ing.
- “Position sensor, design in particular for detecting a steering column torsion” OUDET Claude PRUDHAM Daniel GANDEL Pierre FRACHON Didier ANGLEVIEL Didier
- PRUDHAM Daniel MASSON Gérald FOUCAUT Antoine