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Lab File: Institute of Industrial Electronics Engineering

This lab document describes an experiment on feedback control systems. The objectives are to study feedback control systems and identify their main components. The document provides background theory on control theory, defining the key elements of a feedback control system including the controller, system, and sensor. It explains that a controller monitors a system and alters its conditions, while sensors convert physical signals to readings that can be observed. The feedback path allows the system output to depend on both the input and output.

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Sajjad Idrees
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72 views3 pages

Lab File: Institute of Industrial Electronics Engineering

This lab document describes an experiment on feedback control systems. The objectives are to study feedback control systems and identify their main components. The document provides background theory on control theory, defining the key elements of a feedback control system including the controller, system, and sensor. It explains that a controller monitors a system and alters its conditions, while sensors convert physical signals to readings that can be observed. The feedback path allows the system output to depend on both the input and output.

Uploaded by

Sajjad Idrees
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Government of Pakistan

(Ministry of Science & Technology)

Institute of Industrial Electronics Engineering


Pakistan Council of Scientific & Industrial Research (PCSIR)

Lab File
IE-361 Feedback Control Systems
6 Term 2012
th

Submitted to Engr. Ashab Mirza

Muhammad Tahseen - 09017 Sajjad Idrees - 09032

Lab File

Feedback Control Systems - IE361

INDEX
S. NO.
1

DATE

OBJECTIVE

SIGNATURE

10

11

12

13

14

15
Muhammad Tahseen - 09017 Sajjad Idrees - 09032

Lab File

Feedback Control Systems - IE361

PRACTICAL NO.01
Object
To study feedback control system and identify its components.

Theory
Control theory
Control theory is an interdisciplinary branch of engineering and mathematics that deals with the behaviour of dynamical systems. The external input of a system is called the reference. When one or more output variables of a system need to follow a certain reference over time, a controller manipulates the inputs to a system to obtain the desired effect on the output of the system. The usual objective of a control theory is to calculate solutions for the proper corrective action from the controller that result in system stability, that is, the system will hold the set point and not oscillate around it.

Figure 1: Block Diagram of a Closed-Loop System; showing negative feedback

Controller
In control theory, a controller is a device, possibly in the form of a chip, analogue electronics, or computer, which monitors and physically alters the operating conditions of a given dynamical system.

System
Systems, in one sense, are devices that take input process it and produce an output.. The output is related to the input by a certain relationship known as the system response A System may be controllable or un-controllable; the systems which we can control are the main concern of Control Theory. Open-Loop Systems: Systems whose output depends only on the input signal. It doesnt use feedback path. Closed-Loop Systems: Systems whose output depends on both the input signal and the output value. It uses feedback path.

Sensor
A sensor (also called detector) is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by an (today mostly electronic) instrument. It is a devise which responds to a signal. They are used to measure and/or detect a huge variety of conditions including: temperature, pressure, level, humidity, speed, motion, distance, light or the presence/absence of an object and many other types. There are many versions of each type which may use a different sensing principle or may be designed to operate within different ranges.
Muhammad Tahseen - 09017 Sajjad Idrees - 09032

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