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특허 상세정보

Hydraulic control system utilizing feed-forward control

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16D-031/02   
미국특허분류(USC) 060/452; 060/368; 060/445
출원번호 US-0637921 (2009-12-15)
등록번호 US-8522543 (2013-09-03)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Finnegan, Henderson, Farabow, Garrett & Dunner LLP
인용정보 피인용 횟수 : 1  인용 특허 : 12
초록

The present disclosure is directed toward a hydraulic control system. The system may have a pump and a tool actuator configured to move a tool with a flow of pressurized fluid provided by the pump. The system may further have a tool control valve configured to control the flow of pressurized fluid to the tool actuator. The system may also have a controller operably connected with the tool control valve and the pump. The controller may be configured to receive a tool movement request. The controller may further be configured to estimate a change in a flow...

대표
청구항

1. A hydraulic control system, comprising: a pump;a tool actuator configured to move a tool with a flow of pressurized fluid provided by the pump;a tool control valve configured to control the flow of pressurized fluid to the tool actuator; anda controller, including a feed-forward control map that responds to an estimated disturbance in a predefined way configured to relate the tool movement request to a change of discharge flow rate of the pump, operably connected with the tool control valve and the pump, the controller being configured to: receive a t...

이 특허에 인용된 특허 (12)

  1. Nozari Farhad. Aircraft hydraulic pump control system. USP1999025865602.
  2. Hongliu Du ; Noah D. Manring. Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump. USP2002106468046.
  3. Izumi Eiki (Ibaraki JPX) Watanabe Hiroshi (Ibaraki JPX) Aoyagi Yukio (Ibaraki JPX) Honma Kazuo (Ibaraki JPX) Nakajima Kichio (Ibaraki JPX). Circuit pressure control system for hydrostatic power transmission. USP1985044510750.
  4. Oda Yosuke (Kanagawa JPX) Shirai Kiyoshi (Kanagawa JPX). Displacement control system for variable displacement hydraulic pump. USP1997125697764.
  5. Westveer Robert C. (Kalamazoo MI) Vandervoort John K. (Richland MI). Electronic control system for a variable displacement pump. USP1987044655689.
  6. Houtman Paul K.. Fluid pumping apparatus with two-step load limiting control. USP2000086095760.
  7. Oka,Hidekazu; Yamashita,Koji; Senoo,Saburo. Hydraulic controller for construction machine. USP2006067059125.
  8. Budzich Tadeusz (80 Murwood Dr. Moreland Hills OH 44022). Load responsive system pump controls. USP1979024139987.
  9. Du, Hongliu. Method and apparatus for controlling a variable displacement hydraulic pump. USP2003096623247.
  10. Hongliu Du ; Noah D. Manring. Method and apparatus for controlling pump discharge pressure of a variable displacement hydraulic pump. USP2002046375433.
  11. Cobo Michael A. ; Ingram Richard G. ; Reiners Eric A. ; Vande Wiele Matthew F.. Positive flow control system. USP1999025873244.
  12. Schaffner Larey D. (7770 Witherspoon Dr. Baltimore OH 43105). Power limiter control for a variable displacement axial piston pump. USP1993025183393.