Transcript Slide 1

ELCT 201
ON/OFF
Analog Controller
Lab
Electrical Engineering – ELCT 201
Feedback Control Loop
error
Set Point
+
Controller
Actuator
Feedback
Sensor
Process
Output
Feedback Control Loop
Brain
error
Set Point
+
Controller
Actuator
Feedback
Sensor
Process
Output
Feedback Control Loop
Brain
ARM
error
Set Point
+
Controller
Actuator
Feedback
Sensor
Process
Output
Feedback Control Loop
Brain
ARM
error
Set Point
+
Controller
Actuator
EYES
Feedback
Sensor
Process
Output
Feedback Control Loop
error
Set Point
+
Controller
Actuator
Feedback
Sensor
Process
Output
Feedback Control Loop
Disturbance
error
Set Point
+
Controller
Actuator
Feedback
Sensor
Process
Output
Feedback Control Loop
Disturbance
Control Element
error
Set Point
+
Controller
Final Control
Element
Actuator
Plant
Process
Feedback
Measuring Element
Sensor
Sensing Element
Output
Feedback Control Loop
Feedback Control Loop
ON/OFF Analog Control System
(Using op amps and a H Bridge)
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
U.L.
Dead Band
(Window height)
Window
Maker
Forward
Window
Comparator
L.L.
SP = Vin 2
F
e
e
d
b
a
c
k
Reverse
H Bridge
(L298n)
and
DC Motor
Window Maker (Subsystem 1)
100K
10K
Trim pot
Vin 1
100K
Vout 1 = Vin 2 – Vin 1
Window height
100K
LM324
L.L. (Lower Limit)
100K
10K
10 Turn pot
Set Point
= Vin 2
Window position
Vout 2 = Vin 2
LM324
U.L. (Upper Limit)
Window Comparator (Subsystem 2)
U.L.
Forward
LM324
FEEDBACK
10 turn
10K
Feedback Signal
Reverse
L.L.
LM324
H Bridge (L298n) and DC Motor (Subsystem 3)
Forward
Reverse
FEEDBACK
10 turn
10K
Reverse
Forward
L298N Half Package
Vs
C
D
10
13
14
12
Vss
4
3
4
½ L298N
11
15
8
Ven
L298N Half Package
Vs
100nF
C
D
10
13
14
12
Vss
100nF
4
3
4
½ L298N
11
15
8
Ven
Control Lines
L298n
L298n pinout
L298n
Lab View
Lab View