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ME 5118 Instrumentation & Control System

1. What is Control System

2. Advantage of Control System

3. Primary reasons we build Control System

4. 2 types of Control System

5. What is Feedback signal

6. What is Process input or Command Input

7. What is Controlled output / process output

8. Analysis

9. Design

10. Transient Response

11. Stability

12. Block Diagram, Signal Flow Graph, In Alphabetical Representation

13. Transfer Function

14. Electrical Network transfer function

15. Block Diagram Algebra

16. Signal Flow Graph

a. Node

b. Transmittance

c. Branch

d. Input Node or Source

e. Output Node or Sink

f. Mixed node

g. Path

h. Forward Path

i. Two Forward Path

17. Two Possible combination of two-touching loops

-iupdate ko nlng po kung san ba kelngan isulat, wala pa kc nakalagay...

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http://www.ece.tufts.edu/~srout01/ee12-2008/pdfs/lecture14-ogata.pdf

A control system is a device, or set of devices, that manages, commands, directs or regulates the behavior of other device(s) or system(s). Industrial control systems are used in industrial production for controlling an equipment or a machine.

There are some general advantages they all have, though:

Precision, speed, recovery time, efficiency, less size and weight, repeatability, safety ... these usually translate into much better performance for less cost. Try positioning a 1 mm laser beam to 10 microns at the end of a 2000 meter optical path without a good control system. Try having a modern jet land on a carrier deck at night in heavy weather all by itself. And so it goes.

There are two common classes of control systems, open loop control systems and closed loop control systems. In open loop control systems output is generated based on inputs. In closed loop control systems current output is taken into consideration and corrections are made based on feedback. A closed loop system is also called a feedback control system. The human body is a classic example of feedback control...