Title:
自律型インバータ駆動油圧ユニットの昇温制御方法およびその装置
Document Type and Number:
Japanese Patent JP4341232
Kind Code:
B2
Abstract:
An apparatus for warm up control of an autonomous inverter-driven hydraulic unit comprises a warm up control section (44) and a switch section (40). The warm up control section (44) performs a predetermined process using a current speed and current pressure as input information and outputs a first switch command. The switch section (40) is controlled by the first switch command so as to the current phase for increasing heat generation of the motor (33). The apparatus causes an oil temperature to quickly rise to a level where a hydraulic unit driven by a hydraulic pump (34) can work in an optimum condition.
Inventors:
Tetsuo Nakata
Yasuto Yanagita
Yoshiyuki Ochi
Yasuto Yanagita
Yoshiyuki Ochi
Application Number:
JP2002331568A
Publication Date:
October 07, 2009
Filing Date:
November 15, 2002
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
G01K7/00; F15B21/0427; G01K3/10; H02P6/06; H02P6/08; H02P6/15; H02P6/21
Domestic Patent References:
| JP9255262A | ||||
| JP9033145A | ||||
| JP2002061611A | ||||
| JP60165558U | ||||
| JP54046990U |
Attorney, Agent or Firm:
Yoshitake Hidetoshi
Takahiro Arita
Tomohiro Fukuichi
Tomoshi Tsugawa
Takahiro Arita
Tomohiro Fukuichi
Tomoshi Tsugawa