Controllability of Processes with Large Gains
نویسندگان
چکیده
With a quantizer, limit cycles oscillations are inevitable if the controller has integral action independent of the controller tuning. Proof: At steady state the average uss = r/|G(0)| does not generally match uq. With oscillations between two quantization levels, uss = uq1 · f + uq2 · (1− f ) [f = fraction of time at a given quantizer level]. Sinusoidal oscillations Consider the following system:
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