| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive control method of a work machine, capable of suppressing energy loss by controlling an oil amount to be supplied to a hydraulic motor corresponding to the operation amount of a remote control valve, the rotational frequency of the hydraulic motor and a hydraulic oil pressure difference at the suction port and discharge port of the hydraulic motor. <P>SOLUTION: For the drive control of the work machine which drives a structure by a hydraulic motor 2 driven by hydraulic oil supplied from a hydraulic pump 10 through a control valve 14 and an electric motor 3 cooperating with the hydraulic motor 2, by executing speed feedback control based on the actual rotational frequency of the hydraulic motor 2 and differential pressure feedback control based on the hydraulic oil pressure difference at the suction port and discharge port of the hydraulic motor 2 to a speed command based on the operation amount of a remote control valve 5 for determining the operation amount of the structure, the opening of the control valve 14 is controlled by generating an opening command so as to discharge a required amount of the hydraulic oil at the actual rotational frequency of the hydraulic motor 2 or the tilt angle of the hydraulic pump 10 is controlled by generating a tilt command. <P>COPYRIGHT: (C)2012,JPO&INPIT |
