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    CONTROLLER OF HYDRAULICALLY DRIVEN FAN
    6.
    发明公开
    CONTROLLER OF HYDRAULICALLY DRIVEN FAN 审中-公开
    控制单元用于液压驱动的风扇

    公开(公告)号：EP2261509A1

    公开(公告)日：2010-12-15

    申请号：EP09727372.6

    申请日：2009-03-24

    申请人： Komatsu All Parts Support Ltd.

    发明人： IMAIZUMI, Masaaki ,  IKEGAMI, Katsuhiro ,  ONODERA, Yoshitaka

    IPC分类号： F04D27/00 ,  E02F9/00 ,  E02F9/22 ,  F01P7/04 ,  F15B21/04

    CPC分类号： F15B21/042 ,  E02F9/00 ,  E02F9/0883 ,  E02F9/2246 ,  E02F9/226 ,  E02F9/2296 ,  F01P7/046 ,  F01P2060/04 ,  F03C1/00 ,  F04B1/295 ,  F04B1/324 ,  F04B23/00 ,  F04B49/065 ,  F04D25/04 ,  F04D27/004 ,  F15B21/087 ,  G05B11/38 ,  G05B11/40

    摘要： Disclosed is a controller of a hydraulically driven fan wherein the number of rotations of a hydraulically driven fan can be matched exactly with a target number of rotations when the number of rotations of the hydraulically driven fan is controlled to the target number of rotations, and occurrence of a peak pressure or pressure hunting is controlled in a hydraulic circuit. The controller of a hydraulically driven fan is characterized by comprising a first command value calculation means for calculating a command number of rotations of a fan by eliminating an integral term while the difference between a target valve controlled variable and an actual valve controlled variable is more than a predetermined threshold, a second command value calculation means for calculating a command number of rotations of a fan by adding an integral term to a proportional term while the difference between a target valve controlled variable and an actual valve controlled variable is less than a predetermined threshold, a means for calculating a target valve controlled variable of a control valve based on a command number of rotations of a fan thus calculated, and a control means for outputting a valve controlled variable to a control valve such that the control valve reaches the target valve controlled variable.