A Power Point Presentation On

Speed Control Of D.C Motor Based On Fuzzy Logic

Presented

By :- Amit Ranjan Ravi Shankar

Abstract

The purpose of this paper is to control the speed of DC motor by using FLC with MATLAB applications.This paper is a humble effort to implement an FLC using for motor control. There are three parts to fuzzy controller, the fuzzification of the inputs, the defuzzification of the outputs, and the rule base. This paper is about to introduce the new ability of estimating speed and control the DC motor. By using the controller, the speed can be tuned until it get similar to the desired output that user need.

What Is Fuzzy Logic ?

Why Use Fuzzy Logic ?

When Not to Use Fuzzy Logic ?What Can the Fuzzy Logic Toolbox Do ?

Dc Motor

Principle

Construction

Type Of dc motor

content :-

What is fuzzy logic ?

Fuzzy logic is all about the relative importance of precision.

Fuzzy logic is a convenient way to map an input space to an output space.

Mapping :-

Why use fuzzy logic ?General observations about fuzzy logic:-

Fuzzy logic is conceptually easy to understand. Fuzzy logic is flexible. Fuzzy logic is tolerant of imprecise data. Fuzzy logic can model nonlinear functions of

arbitrary complexity. Fuzzy logic can be built on top of the experience

of experts. Fuzzy logic is based on natural language.

When not to use fuzzy logic. Fuzzy logic is not a cure-all. When

should you not use fuzzy logic ? The safest statement is the first one made in this introduction: fuzzy logic is a convenient way to map an input space to an output space. If you find it’s not convenient, try something else.

What can the fuzzy logic toolbox do ? The Fuzzy Logic Toolbox allows you to do

several things, but the most important thing it lets you do is create and edit fuzzy inference systems. You can create these systems using graphical tools or command-line functions, or you can generate them automatically using either clustering or adaptive neuro-fuzzy techniques.

Methodology Fuzzy logic controller

Structure of fuzzy logic Preprocessing Fuzzification Rule base Defuzzification Postprocessing

Fuzzy logic controller

Fuzzy logic toolbox

FIS Editor Membership Function Rule Editor Rule viewer

Fuzzy logic toolbox:-

ADVANTAGES OVER CONVENTIONAL CONTROL TECHNIQUES

Fuzzy logic controller are customizable.

Low Cost. It Is Design Without Knowing The Exact mathematical Model Of The Process.

DISADVANTAGES OF FUZZY SYSTEM

It requires a lot of data.

The estimators must be familiar with the historically developed programs.

It is not use full for programs much larger or smaller than the historical data.

DC motor Principle & working of DC motor

Construction of DC motor

Types of DC motor

Principle & working of DC motor

A D.C motor is an electric motor that runs on direct current electricity.

The electric motor uses an electrical energy to produce a mechanical energy.

Construction of DC motor

Types of DC motor

There are two types of DC

motor :-

Brushed DC motor

Brushless DC motor

Brushed DC motor

Brushless DC motor

CONCLUSION

Thus the fuzzy logic controller is sensitive to variation of the reference speed attention.

It is also over come the disadvantage of the use conventional control sensitiveness to inertia variation and sensitiveness to variation of the speed with drive system of dc motor.