Closed Loop Motor Speed Control

INTRODUCTION 1. 1 In request to be able to build a closed loop controller, you conduct some mean of gaining information about the rotation of the shaft bid thenumber of revolutions executed per second, or even the precise angle of the shaft. This rise of information about the shaft of the motor is called feed-back because it sends back information from the controlled actuator to the controller. 1. 2 METHODOLOGY laser BASED SPEED SENSOR The methodology of our stray is shown in the block diagram in fig 1. 1 . liquid crystal display DISPLAY repulse DRIVER MOTOR INPUTS MCU MOTOR CONTROLLER build 1. 1 Block Diagram of DC motor speed concur 1.INPUTS User defined or user desirable hurrying ar fed to the MCU block or microcontrller through numerical keyboard. 2. MCU The main authoritative unit which takes as well as sends prognosticate to control the speed of the motor and displays the speed as well. 3. MOTOR CONTROLLER It takes the reference betoken from MCU and convert it in to required voltage. 4. MOTOR DRIVER The required power to choose the motor will be fed by the motor driver. 5. MOTOR The motor now runs at the desired speed as given. 6. LASER BASED SPEED SENSOR Here laser speed sensor locomote is used to drive the speed of the motor and feeds the equivalent signal to the MCU. . LCD DISPLAY unwraps the obtained speed. 1. 3 CIRCUIT DIAGRAM 1. 4 fly the coop PLAN In this semester we are planning to design the optical tach and learn the basic operation of the microcontroller. START Doing some literature stick to and studying the come out Design the block diagram of the whole circumference Design the circuitry for each blocks Testing the hardware for the blocks Make changes to the circuitry. Is the hardware running(a) properly NO Test the changes Integrating different block in concert YES Testing the assembled circuit Make some modification in the circuit Is the model working properly STOP Documentation NO YESFig 1. 4 Flowchart Showing the Met hodology of the Project. 1. 7 CONCLUSION In this project we learn about optical tachometer using microcontroller, its uses and advantages. We outhouse hold this knowledge in further application of using microcontroller. Through this microcontroller we endure arrange a pattern of speed. This can be easily through with(p) with microcontroller but through opposite technique it becomes difficult because using microcontroller we unspoiled have to change the software to change the speed. But in other technique the complete hardware has to be changed. The speed of the motor can be changed by using duty cycle. 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