直動形油圧サーボ弁における静的状態量の測定 Measurement of Static State Variables in a Direct Drive Electro-Hydraulic Servovalve

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Making use of a direct drive servovalve's driving current, which is in proportion to the driving force, and the spool displacement obtained from a built-in LVDT, it is possible to get the state variables such as flow force, flow rate and load pressure for the purpose of valve control without attaching other transducers on the servovalve. In this paper, experiments were carried out using different loads. With PWM driving, no hysteresis appeared regardless of the flow rate. Because of the flow force compensation on the spool of the valve used in the experiment, an empirical equation was used for calculation of the flow rates from the measured flow forces. Under different loads, the calculated flow rates were in consistence with the measured ones. Then, load pressures were obtained from the calculated flow rates, with the discharge coefficients acquired using empirical equations. The calculated load pressures were in good agreement with the measured results.

収録刊行物

  • 日本油空圧学会論文集

    日本油空圧学会論文集 30(6), 147-151, 1999-09-15

    The Japan Fluid Power System Society

参考文献:  4件中 1-4件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10002686213
  • NII書誌ID(NCID)
    AA11182754
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13434616
  • NDL 記事登録ID
    4842428
  • NDL 雑誌分類
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL 請求記号
    Z74-B173
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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