리니어 서보 시스템의 특성 규명

초록

Identification of servo parameters is critical to fabricate a precision machinery. In this paper, servo characteristics of a linear motor driven servo systems are estimated through the frequency response, ripple force identification and nonlinear friction identification methods. Linear element of the servo is identified through the sine sweeping. Ripple forces are identified through the harmonic fitting method. Nonlinear characteristics of static, Coulomb and viscous frictions are estimated through the current measurement. To verify the reliability of the estimated servo model, real-time experiments are conducted on the linear servo for linear and sinusoidal motion experiments. Experimental results confirm the effectiveness of the developed identification method of linear servos.

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