Two strategies: adaptive low speed jitter compensat ion and PID control with high gain are proposed to compensate the nonlinear factors in a servo system. Experimental results show that the minimum stable speed with adaptive control is 0.002 4°/s
and the tracking error peak-peak value is 0.695″; when the minimum stable speed with PID compensation is 0.029 6°/s
the tracking error peak-peak value is 1.281 5″.
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references
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