Magnetorheological fluid brake and force-feedback system for...

F - Mech Eng,Light,Heat,Weapons – 16 – D

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F16D 63/00 (2006.01) B62D 5/00 (2006.01) B62D 12/00 (2006.01) F16D 65/14 (2006.01)

Patent

CA 2469120

A magnetorheological fluid brake utilizing a positive displacement fluid pump adapted to pump a magnetorheological fluid through a viscosity regulator. The viscosity regulator is adapted to controllably vary the viscosity of the magnetorheological fluid, altering the pumping restriction against the fluid pump, resulting in variable resistance to pump shaft rotation relative to the pump housing. An electronic steering system for a work vehicle utilizing the illustrated magnetorheological brake as a resistance device to provide tactile feedback as a function of steering shaft rotational position.

Frein à fluide magnétorhéologique utilisant une pompe à fluide à déplacement positif conçu pour pomper un fluide magnétorhéologique à travers un régulateur de viscosité. Le régulateur de viscosité est conçu pour faire varier de manière régulée la viscosité du fluide magnétorhéologique, modifiant ainsi la restriction de pompage contre la pompe à fluide, ce qui entraîne une résistance variable à la rotation de l'arbre de pompe par rapport au carter de pompe. Un système de direction électronique pour un véhicule de travail utilise le frein magnétorhéologique illustré comme dispositif de résistance pour fournir un retour d'effort tactile en fonction de la position de rotation de l'arbre de direction.

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