THE DESIGN AND CONSTRUCTION OF A BLDC MOTOR SPEED CONTROL WITH RPM DISPLAY
Following the sensitivity of electronics devices to control the speed of a BLDC motor, there is need to develop RPM display system which is responsible for display of duty cycle % and revolution per minute of the system. The answer to this is to design and construct a brushless DC motor speed control with RPM display . It is a device that is capable of giving a constant measure and revolution per minute of DC motor speed .The device comprises of interface, switching circuit and DC motor/ fan, micro-controller. The power supply comprises of 12v transformer, half-rectifier which converts the ac supply into dc voltage and regulated to 5v/12v dc switching circuit. The device is used to control the speed of motor and as well take % of duty cycle. Also, the analysis of the circuits and calculations were properly done to understand the circuit behavior, while the design follows. Basically, the entire report is written in six chapters, chapter one thus introduces BLDC motor and speed control. Chapter two presents literature review, while chapter three surveys design methodology and materials. Chapter four highlighted the system design and calculation. Chapter five covers cost analysis, implementation, testing, casing and assembling. Chapter six is recommendation and conclusion.
TABLE OF CONTENTS
Title Page i
Approval Page iii
Table of Contents vii
1.1 The background
1.2 The aim & objectives of the project
1.3 The Scope and the Limitation
1.1 Definitions of Key Terms
1.2 Design methodology
1.3 Block diagram
1.4 Block diagram description
1.5 System complete circuit diagram
1.6 Component description
1.7 Choice of Design
1.8 System Block Diagram
1.9 Description of Block Diagram
Testing and analysis
5.1. Package over
5.2. Assembling sequence
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An invisible camera technique, in general, consists of an encoding process and a decoding process.
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