Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

CONTROL ENGINEERING

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Introduction

Technology development in 20th century have made possible

High speed bullet trains

Exotic vehicles

Safe, comfortable and efficient automobiles

Military aircraft

Huge transport and luxury ships

Efficient robotic assembly lines etc..

The successful operation of all these systems depends on the proper functioning of the large number of control

systems used in such ventures.

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Introduction to Control Systems

Example 1

The setting of the darkness knob or timer, represents the input quantity and

the degree of darkness and crispness of

the toast produces is output quantity.

If the degree of darkness is not satisfactory, this condition can in no way

automatically alter the length of timer that

heat is applied.

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Introduction to Control Systems

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Introduction to Control Systems

Example 2

The dc shunt motor in figure is another example .

For a given value of field current a required value of voltage is applied to the armature to

produce the desired value of motor speed.

A variation of the speed from the desired value, due to a change of mechanical load

on the shaft, can in no way cause a change

in the value of the applied armature voltage

to maintain the desired speed.

Therefore, the output quantity has no influence on the input quantity.

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Open Loop Control Systems

System in which the output quantity has no effect upon the input quantity are called open loop control systems.

The examples just cited are represented symbolically by a functional block diagram, as shown in figure below

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Close Loop Control System

Systems in which the output has a direct effect upon the input quantity are called close loop control system

Comparison element Control unit Correction unit Process plant Measuring device Reference input Controlled variable

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Close Loop Control System

Example of person with thermometer

Speed control of motor

Block diagram

Rules

Modeling

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Translational Mechanical System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational Mechanical System T.F

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

T.F For Systems With Gears

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System

Prepared By: MUHAMMAD MOEEN SULTAN Department of Mechanical Engineering UET Lahore, KSK Campus

Rotational System