Matlab Tutorial

Matlab Tutorial : Root LocusECE 3510Heather MalkoTable of Context 1.0 Introduction 2.0 Root Locus Design 3.0 SISO Root Locus 4.0 GUI for ControlsThe University of Utah1.0 Introduction A root loci plot is simply a plot of the s zero values and the s poles on a graph with real and imaginary ordinates. The root locus is a curve of the location of the poles of a transfer function as some parameter (generally the gain K) is varied. The locus of the roots of the characteristic equation of the closed loop system as the gain varies from zero to infinity gives the name of the method. This method is very powerful graphical technique for investigating the effects of the variation of a system parameter on the locations of the closed loop poles.The University of Utah1.0 Introduction General rules for constructing the root locus exist and if the designer follows them, sketching of the root loci becomes a simple matter. Root loci are completed to select the best parameter value for stability. A normal interpretation of improving stability is when the real part of a pole is further left of the imaginary axis. The University of Utah1.0 Introduction Matlab and Root Locus: MATLAB Control System Toolbox contains two Root Locus design GUI, sisotool and rltool. These are two interactive design tools of SISO.The University of Utah1.0 Introduction Matlab’s Useful Commands : http://courses.ece.uiuc.edu/ece486/documents/matlab_cmds.html ...