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DRIVER INFORMATION THROUGH PEDAL FEEDBACK VIA MAGNETORHEOLOGICAL FLUID

IP.com Disclosure Number: IPCOM000242985D
Publication Date: 2015-Sep-04
Document File: 1 page(s) / 107K

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The IP.com Prior Art Database

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DRIVER INFORMATION THROUGH PEDAL FEEDBACK VIA MAGNETORHEOLOGICAL FLUID

     What I propose is to use a magnetorheological fluid [2] (one that changes viscosity in the presence of an electrically powered [3] magnetic field) within a pedal feel simulator compartment [1]; this can be the primary source of pedal feel or just a fluid the components are suspended within. The purpose of this idea is to use this fluid to give dynamic tactile feedback, by subtly adjusting its magnetic properties with proper timing. Regenerative Braking Example: The apex of regenerative braking, when further brake pedal application would mean including friction. This can be done based on depth of apply and rate of apply to assist the training of optimal regen utilization. By providing a quick pulse or a slow build in force feedback through higher viscosity, a driver can feel the subtle increase in force feedback, informing them of max regen. Accelerator Pedal Example: When an ECO Mode is enabled, there can be a slow build of force feedback trying to guide you into staying in a particular acceleration range, but as you continue to push, you know when you've pushed past the electric-only range or into the 'inefficient' range. It can also re-create ABS-style feedback if it is desired by the program/driver; this would normally be eliminated through the use of a decoupled system.

     The difficulty with most methods to inform a driver while driving is to ensure the method is not too distracting. This i...