System and method for automatic bucket loading using force...

E - Fixed Constructions – 02 – F

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E02F 3/43 (2006.01)

Patent

CA 2225083

An electrohydraulic control system for loading a bucket of a work machine includes sensors for producing signals representative of bucket position and forces. A command signal generator receives the signals and calculates a target angle on the basis of accumulated energy, and a force vector angle representing actual forces produced at an reference point on the bucket. Lift and tilt command signals are modified in response to differences between the target and actual angles, and used to controllably extend the lift cylinder to raise the bucket through the material, while racking the bucket at rates calculated to efficiently capture the material.

Un système de commande électro-hydraulique pour charger le godet d'un engin mécanique comprend des capteurs pour produire des signaux représentatifs de la position du godet et des forces qui s'y exercent. Un générateur de signaux de commande reçoit les signaux et calcule un angle cible en fonction de l'énergie accumulée, et un angle des vecteurs des forces représentant les forces réelles produites à un point de référence du godet. Les signaux de commande de levage et d'inclinaison sont modifiés en réaction aux différences entre les angles cibles et les angles réels, et sont utilisés pour étendre le cylindre de levage de façon contrôlable de manière à le lever dans le matériau, tout en inclinant le godet à des angles calculés pour capter efficacement le matériau.

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