Electric distribution and control for lighting systems

Abstract

stable systems are shown and discussed for their correspondence between the frequency and root loci. It has been demonstrated that the conditionality, which has previously been explained by use of the Nyquist criterion on the Gplane, lies in a different or rather unusual intersection between the root locus and the imaginary axis of the s-plane. Fin ally, it has been shown that synthesis in both frequency and in time domains can be performed graphically in an analogous manner.Thus, it is demonstrated that the corre lation between the frequency and tran sient responses can be well established by conformal transformation. The choice between the frequency response and the root locus methods is made on the basis of the convenience in plotting the locus, the preference of the designer, and the particular result to be looked for. There are cases in which one method com plements the other.