introduction about control system

1. C.K. PITHAWALA COLLEGE OF
ENGINEERING AND
TECHNOLOGY
PREPARED BY:
TAILOR DIGEN K. 160093111016
SARANG SACHIN A. 160093111015
PATEL HARISH S. 160093111012
AKHIANIA PRATIK B. 160093111001
SUBJECT: Control system engineering
TOPIC: Introduction to Control System
BRANCH: Electronics and Communication
GROUP: G1A_5

2. Context:
• Introduction
• History
• Examples of control system
• Engineering design
• Mechatronic system
• Future evolution of control system

3.  Introduction:
• System: An interconnection of elements and devices for a
desired purpose.
• Control System: the control system is an interconnection
of components which provide desired output
• Process: The device, plant, or system under control. The
input and output relationship represents the cause-and-
effect relationship of the process.

4. • Open-Loop Control Systems: The system in which output
has no effect of feedback then it is known as open loop
control system.
Example: washing machine, hair drier
INPUT OUTPUT
• Closed-Loop Control Systems: The system in which output has
effect of feedback then it is known as close loop control system
Example: A.C ,automatic Iron
INPUT OUTPUT
CONTROLLER PLANT
CONTROL
ELEMENT
FEEDBACK
ELEMENT
PLANT

5.  History:
• Greece (BC) – Float regulator mechanism
• Holland (16th
Century)– Temperature regulator
Watt’s Flyball Governor(18th
century)

6.  Water-level float regulator

7. 18th Century James Watt’s centrifugal governor for the speed
control of a steam engine.
1920s Minorsky worked on automatic controllers for steering
ships.
1930s Nyquist developed a method for analyzing the stability of
controlled systems
1940s Frequency response methods made it possible to design
linear closed-loop control systems
1950s Root-locus method due to Evans was fully developed
1960s State space methods, optimal control, adaptive control and
1980s Learning controls are begun to investigated and developed.
Present and on-going research fields. Recent application of
modern control theory includes such non-engineering systems such
as biological, biomedical, economic and socio-economic systems.

8.  Examples of Modern Control Systems:
CONTROL
DEVICE
SENSOR
ACTUATOR PLANT
MEASURED OUTPUT FEEDBACK
+ -
A negative feedback block diagram depicting a
basic close loop control system. The control device
is often called a ”controller”.
INPUT OUTPUT

9.  Car control system:
(a) Automobile steering control system.
(b) The driver uses the difference between the actual and the desired
direction of travel to generate a controlled adjustment of the steering
wheel.
(c) Typical direction-of-travel response.

10. COMPUTER
SENSOR
ACTUATOR
PLANT
+ -
OUTPUT
Computer control system
INPUT

11.  Automatic boiler control system:
Coordinated control system for boiler generator

12. A three axis control system for inspecting individual semiconductor wafers with high
Sensitive camera

13. Engineering design:
If the performance meets the specification
then finalize the design
If the performance does not meets the
Specification check the configuration and actuator

14. Mechatronic system:
MECHATRONIC
Control System

15.  Design Example of mechatronic

16.  Design concept electric ship with
mechatronics
Ship
Service
Power
Main Power
Distribution
Propulsion
Motor
Motor
Drive
Generator
Prime
Mover
Power
Conversion
Module
 Electric Drive
 Reduce # of Prime
Movers
 Fuel savings
 Reduced maintenance
 Technology
Insertion
 Warfighting
Capabilities
VisionVision
IntegratedIntegrated
PowerPower
SystemSystem
IntegratedIntegrated
PowerPower
SystemSystem
AllAll
ElectricElectric
ShipShip
AllAll
ElectricElectric
ShipShip
ElectricallyElectrically
ReconfigurableReconfigurable
ShipShip
ElectricallyElectrically
ReconfigurableReconfigurable
ShipShip
 Reduced manning
 Automation
 Eliminate auxiliary
systems (steam,
hydraulics, compressed
air)
Increasing Affordability and Military Capability

17. Future evolution of control system:
The MIT dextrous robotic hand: A dextrous robotic hand having 18 degrees of freedom,
Developed as a research tool by the centre of engineering design at the university of Utah
And artificial intelligence laboratory at MIT. It is controlled by five Motorola 68000 µp
And actuated by 36 high performance electro pneumatic actuators via high strength
Polymeric tendons. The hand has three fingers and a thumb.it uses touch sensors and
Tendons for controls

18. A laboratory robot used for sample preparation. The robot manipulates small objects,
Such as test tubes, and probes in out of tight places at relatively high speed.

19. GUIDED BY:
Tejas N. Zaveri