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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
24-6 Electrical Variables
If the two signals have the same frequency, then the Lissajous gure will assume the shape of an
el
lipse
. e el
lipse’s
sh
ape
wi
ll
va
ry
ac
cording
to th
e
ph
ase
di
erence
be
tween
th
e
tw
o
sig
nals
an
d
ac
cording
to th
e
ra
tio
of th
e
am
plitudes
of th
e
tw
o
sig
nals
. Fi
gure
24.6 sh
ows
so
me
g
ures
fo
r
tw
o
sig
-
nals
wi
th
sy
nchronized
fr
equency
an
d
eq
ual
am
plitudes,
bu
t
di
erent
ph
ase
re
lationships
. e fo
rmula
us
ed
f
or
d
etermining
t
he
p
hase
i
s
sin( )
φ
= ±
Y
H
(2
4
.9)
w
here
H is half the maximum vertical height of the ellipse
Y is the intercept on the y-axis
Figure 24.7 shows some gures for two signals that are identical in frequency and ...
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Publisher Resources

ISBN: 9781439848913