PROBLEM TO BE SOLVED: To suppress operation variations of hydraulic actuators due to environmental changed, in an electric hydraulic system for ascending/descending legs of an airplane.SOLUTION: An electric hydraulic actuator system 1 for ascending/descending legs of an airplane, is equipped with at least one hydraulic actuators 21 and 22 configured to retract and deploy legs; a hydraulic circuit 33 configured to supply and discharge hydraulic oil to/from the hydraulic actuators; a hydraulic pump 32 configured to boost the hydraulic oil; an electric motor 31 configured to drive the hydraulic pumps; a controller 4 configured to control the actuation of the electric motor, when a command relating to the retraction of the legs or a command relating to the deploying of the legs is received; and a sensor 34 for detecting the discharge pressure of the hydraulic pumps. The controller controls the actuation of the electric motor so as to feedback the discharge pressure detected by the sensor when receiving the command, and make the discharge pressure of the hydraulic pump reach a target discharge pressure.SELECTED DRAWING: Figure 2

    【課題】航空機の脚揚降用電動油圧システムにおいて、環境変化による油圧アクチュエータの動作ばらつきを抑制する。【解決手段】航空機の脚揚降用電動油圧アクチュエータシステム1は、脚の格納及び展開を行うように構成された、少なくとも1つの油圧アクチュエータ21、22と、油圧アクチュエータに対して作動油の供給及び排出をするように構成された油圧回路33と、作動油を昇圧するように構成された油圧ポンプ32と、油圧ポンプを駆動するように構成された電動モータ31と、脚の格納に係る指令、又は、脚の展開に係る指令を受けたときに、電動モータの作動を制御するように構成されたコントローラー4と、油圧ポンプの吐出圧を検出するセンサ34と、を備える。コントローラーは、指令を受けたときに、センサが検出した吐出圧をフィードバックしかつ、油圧ポンプの吐出圧が目標吐出圧となるように、電動モータの作動を制御する。【選択図】図2


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    Title :

    ELECTRIC HYDRAULIC ACTUATOR SYSTEM FOR ASCENDING/DESCENDING LEG OF AIRPLANE


    Additional title:

    航空機の脚揚降用電動油圧アクチュエータシステム


    Contributors:

    Publication date :

    2016-08-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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