IEVref: 351-46-09 ID: Language: en Status: Standard Term: Nichols plot Synonym1: Synonym2: Synonym3: Symbol: Definition: diagram showing gain and phase angle contours of the closed-loop frequency response $\frac{{G}_{0}}{1+{G}_{0}}$ plotted in the rectangular coordinates of logarithmic gain and phase difference of the open-loop frequency response G0Note 1 to entry: $\frac{{G}_{0}}{1+{G}_{0}}$ is the closed-loop frequency response for changes of the reference variable in the case that the controlled variable x is used as the feedback variable r directly. The transfer function of the measuring element is assumed unity.Note 2 to entry: This entry was numbered 351-25-09 in IEC 60050-351:2006. Publication date: 2013-11 Source: Replaces: Internal notes: CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: