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sgrid
Generate s-plane grid of constant damping factors and natural frequencies
Syntax
sgrid
sgrid(z,wn)
Description
sgrid generates, for pole-zero
and root locus plots, a grid of constant damping factors from zero
to one in steps of 0.1 and natural frequencies from zero to 10 rad/sec
in steps of one rad/sec, and plots the grid over the current axis.
If the current axis contains a continuous s-plane
root locus diagram or pole-zero map, sgrid draws
the grid over the plot.
sgrid(z,wn) plots a grid
of constant damping factor and natural frequency lines for the damping
factors and natural frequencies in the vectors z and wn,
respectively. If the current axis contains a continuous s-plane
root locus diagram or pole-zero map, sgrid(z,wn) draws
the grid over the plot.
Alternatively, you can select Grid from the right-click menu to generate the same s-plane grid.
Examples
Generate S-Plane Grid on Root Locus Plot
Create the following continuous-time transfer function:
H = tf([2 5 1],[1 2 3]);
Plot the root locus of the transfer function.
rlocus(H)
Plot s-plane grid lines on the root locus.
sgrid
