The resonance peak in the closed-loop frequency response represents a measure of relative stability; the resonant frequency serves as a measure of speed of response in the time-domain. The closed-loop...The resonance peak in the closed-loop frequency response represents a measure of relative stability; the resonant frequency serves as a measure of speed of response in the time-domain. The closed-loop frequency response can be alternately visualized on the Nichol’s chart, where the magnitude in dB is plotted along the vertical axis, and the phase in degrees is plotted along the horizontal axis.
