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The Application of Tolerance Rings to Provide Shock Overload Protection in EPAS Systems
Technical Paper
2004-01-1099
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Tolerance Rings have traditionally been used to compensate for component tolerances or differential thermal expansion effects but developments in Tolerance Ring technology are enabling them to be more widely used as simple, low cost, non-destructive overload protection devices.
By following suitable design principles, detailed in this paper, tolerance rings can be designed to operate as shock overload protection devices within existing component space envelopes whilst also allowing reduction in design strength of other components in the drive system.
The factors to be considered in selecting between various alternative tolerance ring positions within the EPAS electric drive train are explained.
The effects of mating component and tolerance ring variation on the performance of the overall system are detailed.
Examples of the use of Tolerance Rings in production EPAS systems are outlined.
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Authors
Citation
Smith, J., "The Application of Tolerance Rings to Provide Shock Overload Protection in EPAS Systems," SAE Technical Paper 2004-01-1099, 2004, https://doi.org/10.4271/2004-01-1099.Also In
Vehicle Dynamics and Simulation, Steering and Suspensions on CD-ROM from the SAE 2004 World Congress
Number: SP-1881CD; Published: 2004-03-08
Number: SP-1881CD; Published: 2004-03-08
References
- Automotive Sourcing April-May 2002
- The eBearing Times May 2001
- Electric Power Steering - The First Step on the Way to “Steer by Wire” 1999 Paper 1999-01-0401 SAE International
- The Application of Tolerance Rings in Anti-Theft Steering Column Assemblies 1994 Paper 940868 SAE International
- The Application of Tolerance Rings to Motor Overload Protection 2001 International Appliance Technical Conference
- Recent Advances in Tolerance Rings and their application to bearing and component mounting in electric motors 2002 Electrical Manufacturing and Coil Winding Association International Conference
- Process Tolerancing: A solution to the dilemma of Worst-Case versus Statistical Tolerancing Taylor Wayne A. Dr. 1995