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Area Control technology / Behaviour and characteristics of control systems

IEV ref351-46-09

en
Nichols plot
diagram showing gain and phase angle contours of the closed-loop frequency response G 0 1+ G 0 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaam4ramaaBaaaleaacaaIWaaabeaaaOqaaiaaigdacqGHRaWkcaWGhbWaaSbaaSqaaiaaicdaaeqaaaaaaaa@3A6B@ plotted in the rectangular coordinates of logarithmic gain and phase difference of the open-loop frequency response G0

Note 1 to entry: G 0 1+ G 0 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaam4ramaaBaaaleaacaaIWaaabeaaaOqaaiaaigdacqGHRaWkcaWGhbWaaSbaaSqaaiaaicdaaeqaaaaaaaa@3A6B@ 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.


fr
diagramme de Nichols, m
diagramme donnant les courbes du gain logarithmique de la réponse en fréquence en boucle fermée G 0 1+ G 0 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaam4ramaaBaaaleaacaaIWaaabeaaaOqaaiaaigdacqGHRaWkcaWGhbWaaSbaaSqaaiaaicdaaeqaaaaaaaa@3A6B@ , tracées en coordonnées rectangulaires et de la différence de phase de la réponse en fréquence en boucle ouverte G0

Note 1 à l’article: G 0 1+ G 0 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaalaaabaGaam4ramaaBaaaleaacaaIWaaabeaaaOqaaiaaigdacqGHRaWkcaWGhbWaaSbaaSqaaiaaicdaaeqaaaaaaaa@3A6B@ est la réponse en fréquence en boucle fermée pour des variations de la variable de référence, dans le cas où la variable de commande x serait utilisée directement comme variable de réaction r. La fonction de transfert de l'élément de mesurage est supposée être de un.

Note 2 à l'article: Cet article était numéroté 351-25-09 dans la CEI 60050-351:2006.


ar
رسم نيكولاس

de
Nicholsdiagramm, n

es
diagrama de Nichols, m

fi
Nicholsin taajuusvastekuvaajakaavio

it
diagramma di nichols

ko
니콜스 선도

ja
ニコラス線図

pl
wykres Nicholsa

pt
diagrama de Nichols

zh
尼科尔斯图

Publication date: 2013-11
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