Title:
ELECTRIC POWERED CYLINDER CONTROL METHOD AND ELECTRIC POWERED CYLINDER CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/162007
Kind Code:
A1
Abstract:
Disclosed are an electric powered cylinder control method and control system, which are capable of avoiding damage to a load detector that is coupled to an electric powered cylinder or a rod of an electric powered cylinder, said damage resulting from overload arising from an unanticipated impact between the rod of the electric powered cylinder and a member to be compressed. A servo-controller (17) determines whether a compression load Pm that is detected by a load detector (13) is greater than or equal to an impact sensing load Pc. If the servo-controller (17) determines that the compression load Pm is greater than or equal to the impact sensing load Pc, the servo-controller (17) further determines whether an interrupt on impact flag is set, as well as whether the drive speed Sm of a rod (11) is greater than or equal to an allowed impact speed Sc. If the servo-controller (17) determines either that the interrupt on impact flag is set, or that the drive speed Sm is greater than or equal to the allowed impact speed Sc, the servo-controller (17) outputs an inverse direction position instruction pulse signal to a servo-amp (16), forcibly reducing accumulated pulses that are buffered in the servo-amp (16) and interrupting the rod (11).
Inventors:
NAGASAKA MASAHIKO (JP)
SHIRAI YOICHIRO (JP)
SHIRAI YOICHIRO (JP)
Application Number:
PCT/JP2011/058785
Publication Date:
December 29, 2011
Filing Date:
April 07, 2011
Export Citation:
Assignee:
SINTOKOGIO LTD (JP)
NAGASAKA MASAHIKO (JP)
SHIRAI YOICHIRO (JP)
NAGASAKA MASAHIKO (JP)
SHIRAI YOICHIRO (JP)
International Classes:
B30B15/14; B30B15/28; H02P29/00
Foreign References:
| JPH1158099A | 1999-03-02 | |||
| JP2004364396A | 2004-12-24 | |||
| JPH06245561A | 1994-09-02 |
Attorney, Agent or Firm:
YAMASAKI, Yukuzo et al. (JP)
Yukuzo Yamazaki (JP)
Yukuzo Yamazaki (JP)
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Claims: