DRIVE CONTROL SYSTEM FOR WORKING MACHINE, WORKING MACHINE WITH SAID DRIVE CONTROL SYSTEM, AND DRIVE CONTROL METHOD FOR SAID WORKING MACHINE

A drive control system 1 of a hydraulic excavator 2 includes a control device 50. When accelerating a turning body 5 to a target turning speed, the drive control device 50 controls an operation of the electric motor driving device 36 such that the electric motor 34 outputs high efficiency torque by...

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Bibliographische Detailangaben
Hauptverfasser:	MURAOKA, Hideyasu, YUDATE, Yoji, IWABE, Kazuya
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A drive control system 1 of a hydraulic excavator 2 includes a control device 50. When accelerating a turning body 5 to a target turning speed, the drive control device 50 controls an operation of the electric motor driving device 36 such that the electric motor 34 outputs high efficiency torque by which a highest electric power efficiency is obtained at the target turning speed. The control device 50 controls an operation of an oil pressure supply device 9 such that residual torque obtained by subtracting the high efficiency torque from target torque is output from an oil-pressure motor 33.