Control theory | Algorithms

Hall circles

Hall circles (also known as M-circles and N-circles) are a graphical tool in control theory used to obtain values of a closed-loop transfer function from the Nyquist plot (or the Nichols plot) of the associated open-loop transfer function. Hall circles have been introduced in control theory by Albert C. Hall in his thesis. (Wikipedia).

Hall circles
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Related pages

Circles of Apollonius | Control theory | Locus (mathematics) | Transfer function | Closed-loop transfer function | Nichols plot