Download root-locs-37.hqx (860,447 KB)
From: Alan Robinson
Subject: RootLocs 3.7
ROOTLOCS 3.7 - a Root Locus plotting program
ROOTLOCS is an easy to use program for plotting Root Locus diagrams
of linear control systems. Given the positions in the complex plane of
the open loop poles and zeros of a system, ROOTLOCS plots the loci of
the system's closed loop poles as the gain of the system is increased
indefinitely starting from zero.
ROOTLOCS can handle systems with up to 20 poles and 20 zeros, and is
very fast. It offers a choice of working in either the S-Plane or the
Z-Plane and it can plot the loci of both positive and negative gain
systems. Several useful 'tools' are included for getting quantitative
information from the displayed root locus plots.
The current version of the program (3.7) incorporates several major
improvements over the previously archived version (3.5), including :
¥ Magnification of a rectangular region of the plane
¥ Faster scrolling of the plane with Shift + Cursor keys
¥ Automatic adjustment of Z-Plane size for best display of damping lines
¥ Original boundary values also restored with Restore Original PZ
¥ Unit circle permanently displayed in Z-Plane
¥ Input edit fields now accept only numeric data
¥ A host of bugfixes and other minor improvements
The program should prove useful to students of control engineering and
practising engineers alike.
ROOTLOCS requires a PowerMacintosh equipped with System 7.0 (or higher).