Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HYDRAULIC DRIVE DEVICE OF ELECTRIC-POWERED HYDRAULIC OPERATING MACHINE
In a hydraulic drive system for an electrically driven hydraulic work machine that executes flow rate control of an hydraulic pump by controlling a rotation speed of an electric motor to drive a hydraulic pump to supply a hydraulic fluid to a plurality of actuators, and power consumed by the electric motor reliably limited within a range of preset maximum allowable power without unnecessary degradation of responsiveness of the electric motor. To this end, a controller 50 includes a maximum angular acceleration limitation section (allowable rate computation section 50n and rate limitation section 50j), computes hydraulic power consumed by a main pump 2, computes a maximum angular acceleration allowed for an electric motor 1 on the basis of a magnitude of the hydraulic power and a preset maximum allowable power consumable by the electric motor 1, and limits an angular acceleration of the electric motor 1 not to exceed the maximum angular acceleration.
HYDRAULIC DRIVE DEVICE OF ELECTRIC-POWERED HYDRAULIC OPERATING MACHINE
In a hydraulic drive system for an electrically driven hydraulic work machine that executes flow rate control of an hydraulic pump by controlling a rotation speed of an electric motor to drive a hydraulic pump to supply a hydraulic fluid to a plurality of actuators, and power consumed by the electric motor reliably limited within a range of preset maximum allowable power without unnecessary degradation of responsiveness of the electric motor. To this end, a controller 50 includes a maximum angular acceleration limitation section (allowable rate computation section 50n and rate limitation section 50j), computes hydraulic power consumed by a main pump 2, computes a maximum angular acceleration allowed for an electric motor 1 on the basis of a magnitude of the hydraulic power and a preset maximum allowable power consumable by the electric motor 1, and limits an angular acceleration of the electric motor 1 not to exceed the maximum angular acceleration.
HYDRAULIC DRIVE DEVICE OF ELECTRIC-POWERED HYDRAULIC OPERATING MACHINE
HYDRAULISCHE ANTRIEBSVORRICHTUNG EINER ELEKTRISCH ANGETRIEBENEN HYDRAULISCHEN ARBEITSMASCHINE
DISPOSITIF D'ENTRAÎNEMENT HYDRAULIQUE D'UNE MACHINE À ACTIONNEMENT HYDRAULIQUE À ALIMENTATION ÉLECTRIQUE
TAKAHASHI KIWAMU (Autor:in) / ISHII TAKESHI (Autor:in) / MAEHARA TAIHEI (Autor:in)
17.04.2024
Patent
Elektronische Ressource
Englisch
HYDRAULIC DRIVE DEVICE OF ELECTRIC-POWERED HYDRAULIC OPERATING MACHINE
| Europäisches Patentamt | 2020
HYDRAULIC DRIVE DEVICE FOR ELECTRIC HYDRAULIC WORK MACHINE
| Europäisches Patentamt | 2019