Wheel Speed Sensor Applying the Eddy Current Effect Through the High-Frequency Modulated Magnetic Field 960755
This active-drive wheel speed sensor, developed by the high-frequency magnetic system, enables detection of very slow wheel speeds - hitherto difficult to accomplish with any conventional type of Magnetic Pick up - by applying the eddy current effect through the high-frequency magnetic field. The following report presents an analysis of the magnetic circuit which integrates the magnetic-field generating coil with the detection rotor, and the unique circuit system which ensures strength against eccentricity of the wheel rotor and air gap variations, etc.
Citation: Teramae, K., Fukuzono, H., Nishimura, H., Nagata, S. et al., "Wheel Speed Sensor Applying the Eddy Current Effect Through the High-Frequency Modulated Magnetic Field," SAE Technical Paper 960755, 1996, https://doi.org/10.4271/960755. Download Citation