A Nyquist plot is a parametric plot of a transfer function used in automatic control and signal processing. The most common use of Nyquist plots is for assessing the stability of a system with feedback. In Cartesian coordinates, the real part of the transfer function is plotted on the X axis. The imaginary part is plotted on the Y axis. The frequency is swept as a parameter, resulting in a plot per frequency. Alternatively, in polar coordinates, the gain of the transfer function is plotted as the radial coordinate, while the phase of the transfer function is plotted as the angular coordinate. The Nyquist plot is named after Harry Nyquist, a former engineer at Bell Laboratories.
Read more about Nyquist Plot: Uses
Famous quotes containing the word plot:
“Jamess great gift, of course, was his ability to tell a plot in shimmering detail with such delicacy of treatment and such fine aloofnessthat is, reluctance to engage in any direct grappling with what, in the play or story, had actually taken placeMthat his listeners often did not, in the end, know what had, to put it in another way, gone on.”
—James Thurber (18941961)