Linear model follow-up control of an electro-hydraulic servo system by D.D.C. Parameter identification of an electro-hydraulic servomotor by M.R.A.C.

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  • 電気・油圧サーボ系のＤＤＣによる線形モデル追従制御　　モデル規範制御による制御対象パラメータの同定

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In this research, the parameters of an electro-hydraulic servomotor, mass and equivalent coefficient of viscous friction of the coulomb friction force, are identified by the application of the Model Reference Adaptive Control( M. R. A. C. ). <br>On the other hand, for controlling the waveform displacement the Direct Digital Control (D. D. C. )is employed for the electro-hydraulic servo system's linear model follow-up control. <br>In this control system, the variable feedback velocity and acceleration gains at every sampling time are calculated using a digital computer and identified parameters, and the manipulating signal is generated by the digitalc omputer. <br>This control method was applied to the analog simulation circuit of the hydraulic servomotor and the experimental apparatus for confirmation, and the resultsw erea s follows: <br>(1) We confirmed that it is possible to identify the parameters of the hydraulic servomotor, mass and equivalentc oefficient of viscous friction of the coulomb friction force, by means of the application of the M. R. A. C. <br>(2) We confirmed that it is possible to control the waveform displacement of the electro-hydraulic servo system, with insensibility for the variation of load and the high waveform reappearance, and without the input amplitude dependency of the dynamic characteristics, by means of this control.

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