Essentials of control techniques and Keyword Stats 2 pptx
Essentials of control techniques and Keyword Stats_2 pptx
... can easily outperform them.
BD
CA
Motor
+12v
0v
Figure 4.3 Schematic of H-bridge.
9 123 9.indb 45 10/ 12/ 09 1:41 :22 PM
44 ◾ Essentials of Control Techniques and Theory
Non-contact variations on the ... voltage and position.
ClockwiseAnticlockwise
Figure 4.1 Two-phase encoder waveforms.
Figure 4 .2 A potentiometer can measure position.
9 123 9.indb 43 10/ 12/ 09 1:41 :20 PM...
Essentials of control techniques and Keyword Stats_3 pot
... equate the coefficients. We get:
() () ()−−94352XjXX j++=
i.e.,
()()−−4 122 +=jX j
and so
X
j
j
jj j
=
+
=
+
=
2
4 12
24 12
4 12
420
160
22
−
−
−−−−()()
Xj= 1408/.− /
e final solution ... for 10/(s + 2) (s + 5).
9 123 9.indb 91 10/ 12/ 09 1: 42: 47 PM
82 ◾ Essentials of Control Techniques and Theory
Now the derivative of a sine-wave is another sine-wave...
Essentials of control techniques and Keyword Stats_4 pptx
... 0045
2
ak ak− =+
or multiplying through by 20 0
2
,
()(.)ak ak− 381 800 181 09
2
=+
() ()(),ak ak
2
7 62 720 145161 144800 0−−++ =
9 123 9.indb 108 10/ 12/ 09 1:43 :22 PM
116 ◾ Essentials of Control ... we have
()kkk
n2
56 0++ =
and once more we find ourselves solving a quadratic to find k = 2 or k = –3.
9 123 9.indb 1 02 10/ 12/ 09 1:43:09 PM
108 ◾ Essentials of...
Essentials of control techniques and Keyword Stats_5 docx
... separate variable. We
must also impose a limit of ±1 on u.
9 123 9.indb 122 10/ 12/ 09 1:43:44 PM
124 ◾ Essentials of Control Techniques and Theory
d = 22 .,
e = 16 1.,
f = 44
Try these new numbers ... conditions too.
9 123 9.indb 133 10/ 12/ 09 1:43: 52 PM
II
ESSENTIALS OF
CONTROL THEORY—
WHAT YOU OUGHT
TO KNOW
9 123 9.indb 131 10/ 12/ 09 1:43:51 PM
136 ◾ Ess...
Essentials of control techniques and Keyword Stats_6 doc
...
Gj
j
()
()
()
ω
ωωω
ωω
=
−− −
+
21
1
22
22 2
9 123 9.indb 149 10/ 12/ 09 1:44 :24 PM
The Root Locus ◾ 173
so the poles are at the roots of
sksk
2
20++ +()=
i.e.,
sk kk
kk
=− −±+−
=− −±+
12 12
121 4
2
2
/(/)
//
Both ... radius of 2 implies a closed loop gain of 1 /2, and
k
+
–
1
s(s+1)
2
Figure 11.9 Block diagram with unity feedback around a variable gain.
9 123 9....
Essentials of control techniques and Keyword Stats_7 ppt
... 14.1.
9 123 9.indb 1 92 10/ 12/ 09 1:45:19 PM
196 ◾ Essentials of Control Techniques and Theory
Now the unit impulse is the time-derivative of the unit step, so (begging all
sorts of questions of convergence) ... 1
Figure 14 .2 Step response of (1 + 3s)/(1 + s).
9 123 9.indb 196 10/ 12/ 09 1:45 :27 PM
184 ◾ Essentials of Control Techniques and Theory
13.5 Neur...
Essentials of control techniques and Keyword Stats_8 ppt
... ()()ττ=+−
∫∫
9 123 9.indb 21 3 10/ 12/ 09 1:45: 52 PM
20 2 ◾ Essentials of Control Techniques and Theory
it can be rearranged as
xxxxu
3 321
3 42+ ++=
is will be equivalent to
x xxxu
1 111
3 42+ ++=
If ... vector (1, 1)′, and
9 123 9.indb 21 8 10/ 12/ 09 1:45:57 PM
22 2 ◾ Essentials of Control Techniques and Theory
If we double the va...
Essentials of control techniques and Keyword Stats_11 ppt
... problem of optimal
control of a linear system.
u = –1
u = +1
x
.
x
Figure 22 .2 Piecewise linear suboptimal controller.
9 123 9.indb 309 10/ 12/ 09 1:48:46 PM
28 8 ◾ Essentials of Control Techniques and ... damping factor and of constant undamped natural
frequency.
9 123 9.indb 28 4 10/ 12/ 09 1:48: 12 PM
This page intentionally left blank
Design Methods for Comput...
Essentials of control techniques and Keyword Stats_12 docx
... for constant, 28 5
z-Transform, 8, 25 1 25 2
properties of, 25 4 25 6
pulse responses, 27 9
and time functions, 27 1
9 123 9.indb 325 10/ 12/ 09 1:49:04 PM
324 ◾ Index
Tiltdem expression, 128 – 129
tiltrate ... 81
www.esscont.com /20 /rootlocz.
htm, 28 2
www.esscont.com/ 12/ rootzoom.
htm, 175
www.esscont.com /2/ sim.htm, 14
www.esscont.com /2/ sim2.htm, 21
www.esscont.com /2/ s...
Essentials of Control Techniques and Theory_1 pptx
... Dynamic Control Assessing Performance 28 2
21 Errors and Noise 28 9
21 .1 Disturbances 28 9
21 .2 Practical Design Considerations 29 2
21 .3 Delays and Sample Rates 29 6
21 .4 Conclusion 29 7
22 Optimal Control Nothing ... the Best 29 9
22 .1 Introduction: e End Point Problem 29 9
22 .2 Dynamic Programming 300
22 .3 Optimal Control of a Linear System 305
22 .4 T...
Từ khóa: