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Sensors 2018, 18(2), 541;

Potential and Limitations of an Improved Method to Produce Dynamometric Wheels

INSIA, Universidad Politécnica de Madrid, Carretera de Valencia km. 7, 28031 Madrid, Spain
Vehicle Dynamics Group, University of A Coruña, 15403 Ferrol, Spain
Integrated Group for Engineering Research, University of A Coruña, 15403 Ferrol, Spain
ETSII and INSIA, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006 Madrid, Spain
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 5 January 2018 / Accepted: 7 February 2018 / Published: 10 February 2018
(This article belongs to the Special Issue Mechatronic Systems for Automatic Vehicles)
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A new methodology for the estimation of tyre-contact forces is presented. The new procedure is an evolution of a previous method based on harmonic elimination techniques developed with the aim of producing low cost dynamometric wheels. While the original method required stress measurement in many rim radial lines and the fulfillment of some rigid conditions of symmetry, the new methodology described in this article significantly reduces the number of required measurement points and greatly relaxes symmetry constraints. This can be done without compromising the estimation error level. The reduction of the number of measuring radial lines increases the ripple of demodulated signals due to non-eliminated higher order harmonics. Therefore, it is necessary to adapt the calibration procedure to this new scenario. A new calibration procedure that takes into account angular position of the wheel is completely described. This new methodology is tested on a standard commercial five-spoke car wheel. Obtained results are qualitatively compared to those derived from the application of former methodology leading to the conclusion that the new method is both simpler and more robust due to the reduction in the number of measuring points, while contact forces’ estimation error remains at an acceptable level. View Full-Text
Keywords: measuring wheel; dynamometric wheel; wheel transducer; forces measurement; tyre/road contact measuring wheel; dynamometric wheel; wheel transducer; forces measurement; tyre/road contact

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Bueno-López, J.L.; Cardenal, J.; Deibe, Á.; García de Jalón, J. Potential and Limitations of an Improved Method to Produce Dynamometric Wheels. Sensors 2018, 18, 541.

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