File: p_margin.man

package info (click to toggle)
scilab 2.4-1
  • links: PTS
  • area: non-free
  • in suites: potato, slink
  • size: 55,196 kB
  • ctags: 38,019
  • sloc: ansic: 231,970; fortran: 148,976; tcl: 7,099; makefile: 4,585; sh: 2,978; csh: 154; cpp: 101; asm: 39; sed: 5
file content (34 lines) | stat: -rw-r--r-- 673 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
.TH p_margin 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an 
.SH NAME
p_margin - phase margin
.SH CALLING SEQUENCE
.nf
[phm,fr]=p_margin(h)
phm=p_margin(h)
.fi
.SH PARAMETERS
.TP 10
h   
: SISO linear system (\fVsyslin\fR list).
.TP
phm 
: phase margin (in degree)
.TP
fr  
: corresponding frequency (hz)
.SH DESCRIPTION
The phase margin is the values of the phase at points where the
nyquist plot of \fVh\fR crosses the unit circle.
.SH EXAMPLE
.nf
h=syslin('c',-1+%s,3+2*%s+%s^2)
[p,fr]=p_margin(h)  
[p,fr]=p_margin(h+0.7)  
nyquist(h+0.7)
t=(0:0.1:2*%pi)';plot2d(sin(t),cos(t),-3,'000')
.fi
.SH SEE ALSO 
chart, black, g_margin, nyquist
.SH AUTHOR
S. S.