Nyquist stability criterion


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Nyquist stability criterion

[′nī‚kwist stə′bil·əd·ē krī‚tir·ē·ən]
(control systems)
References in periodicals archive ?
By the Nyquist stability criterion, all the roots of (28) lie on the open LHP if and only if the Nyquist curve
In this article, small-signal parameters are defined, a simple unstable RLC circuit for which the criterion of Equations 1 and 2 fails is analyzed, conditions under which it can be applied are presented and the Nyquist stability criterion is discussed.
12] As can be seen, both descriptions are valid when used with the Nyquist stability criterion.
Two very simple RLC circuits have been used to show that the widely used intuitive criterion described by Equations i and 2 may fail even in very simple cases and should be replaced by the Nyquist stability criterion.