The Course

+ (Refer text book for chapter nos.)

G
-

Modelling (1 - 4)

Analysis - time domain ( 5 to 7 )

H
Analysis - frequency domain (8 to 9)

Design (10)

SOME
Destination point
EXAMPLES
OF Actual path
of movement Prescribed path
CONTROL output reference input

SYSTEMS Starting Point

 Some examples of
control systems
Manual

Liquid Level feedback control

Temperature
of

Position

Speed
a thermal system

Thermometer
Steam Automatic
Hot feedback control
water
of
Cold
water
R
a thermal system
Drain
 Temperature
measuring device Components of a
Automatic Hot
controller water control system
Control
Plant
valve
Transducer
Steam R
Controller

Amplifier
Cold
water Drain
Actuator

Controller

Pressure Pressure
measuring Chimney
element
Control System Furnace Actuator
Oil
Burner Damper
Air
 .
//////// Set point
Speed
Control System ////////

Steam To engine

Pneumatic
valve Controller
Liquid - level
Inflow
control system
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Outflow
 Modelling Modelling

• Understand the concept • Mathematical equations

• Verbal description • Transfer Function
• Physical diagram (Laplace Transforms)
• Block diagram or • Measurement of parameters
Signal flow graph

Airplane Projected
position

Desired Actual
Lead
level Water
level angle
Pneumatic
Controller valve tank antenna
Radar,
Power
Float computer
amplifier Antiaircraft circuits
gun

Block diagram Drive motor

Actuating signal
 Classification of Classification of
control systems control systems

Open Loop / Closed Loop
Lumped Parameter /

Linear/ Non Linear Distributed Parameter

Continuous time / Discrete time

Time Invariant Parameter /
Time Variant Parameter
Analog / Digital

Systems involved Systems involved

Electrical Pneumatic

Mechanical Thermal

Electromechanical Chemical

Hydraulic Non - Engineering