The pic16f877a microcontroller is programmed to generate two periodic pwm signals from its. The controller presented here uses the pulsewidth modulation pwm technique. Dc motor speed control using pwm with pic microcontroller. Microcontroller based 4 quadrant dc motor speed control. The development of bldcm control system requires reliable operation, excellent performance of control algorithm, low cost and short development cycle. Speed control of brushless dc motor using microcontroller. Rotational speed n of an induction motor can be shown by the expression 1.
This paper presents a design, simulation and implementation of pulse width modulation pwm speed control system of dc motor using microcontroller mcu. In our robotics applications we may have to control the speed of the dc motor. Above diagram is basically a three phase voltage source inverter h bridge. Synchronisation, speed and direction control of dc motor. Armature voltage is varied by pulse width modulation pwm of input dc voltage by using the developed microcontrollers program. Microcontroller based speed control system consist of electronic component, microcontroller and the. A pair of push buttons is interfaced to microcontroller which is interfaced to operation motor by motor driver ic. This project is mainly concerned on design and implementation of bidirectional dc motor speed and position control system by using microcontroller atmega32 and lab view software.
Microcontrollerbased dc motor speed controller kumar fig. We can achieve speed control of dc motor using mechanical or electrical techniques but they require large size hardware to implement but a microcontroller based system provides an easy way to control the speed of dc motor. Pdf bidirectional speed control of dc motor based on. Microcontroller based 4 quadrant speed control system download project documentsynopsis the project aims at developing a speed control system for dc motors in four quadrants i. A circuit with lm35dz temperature sensor, pic16f877a microcontroller, brush less dc motor and few of electronic components is designed and implemented to control the fan speed automatically. Circuit of microcontrollerbased dc motor speed controller d c motor speed controllers are very useful for controlling the motion of robotic and industrial automation systems. This paper proposes the speed control of bldc motor for an electric vehicle. Tech students in eee department, giet,gunupur abstractthe project is designed to develop a fourquadrant speed control system for a dc motor. This paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor.
Four quadrant dc motor speed control using arduino manoj kumar swain1, bibhuti nemalpuri2, deepak kumar das3 and aieshwarya nath4 1assistant professor in eee department, giet, gunupur 2,3,4 b. Dc motor speed control using 8051 microcontroller youtube. Aug 18, 2018 dc motor speed and direction control with pic16f84a using hbridge. The electric motor speed is fixed when ac motor is connected to ac line. Jun 16, 2015 the block diagram of four quadrant dc motor speed control with 8051 microcontroller project is shown in the above figure. The speed control of the dc motors is very essential. Armature voltage is varied by pulse width modulation pwm of input dc voltage. Temperature based speed control of fan using microcontroller 10.
Sep 22, 2018 by interfacing dc motor to the microcontroller, we can do many things like controlling the direction of the motor, controlling the speed of the motor. Hall position sensors, brushless dc motor, microcontroller. Pwm based dc motor speed control using microcontroller circuit principle. Interfacing dc motor with 8051 microcontroller using l293d. If you have worked with any variant of the 8051 microcontroller, you might remember that 8051 doesnt have a dedicated pwm circuitry to enable pwm mode. To control dc motor speed with pic microcontroller, we should know about these two features. The proposed system uses a microcontroller of the 8051 family and a rectifiedpower supply. Speed control of induction motor using pwm technique. The controller presented here uses the pulsewidth modulation pwm tech nique. The heart of this project is the 8051 microcontroller.
The speed control mechanism is applicable in many cases like controlling the movement of robotic vehicles, movement of motors in paper mills and the movement of motors in elevators where different types of dc motors are used. Dc motor speed control using 8051 microcontroller mahesh madivali. Block diagram for three phase induction motor speed control is given below. The controller presented here uses the pulsewidth modulation pwm. Pulse width modulation pwm technique was used to control the amount of power delivered to the load the dc motor without dissipating any wasted power. This paper is mainly concerned on dc motor speed control system by using microcontroller pic 16f877a. This paper presents the design and implementation of microcontroller based speed control of. Here we will use a technique called pwm pulse width modulation to control the speed of dc motor.
Four quadrant dc motor speed control using arduino 1, bibhuti. C motor speed controllers are very useful for control ling the motion of robotic and industrial automation systems. Considering the versatility of usefulness and ease of control of the dc motor both for domestic, industrial and entertainment, research works have continued unabated on further and better ways to achieve its control. This proposed system provides a very precise and effective speed control system. As an additional feature lcd is used to present the temperature and the fan speed. Microcontroller based speed control of dc geared motor ijera.
The system proposed in this paper is speed control of dc motor based on tms microcontroller using pwm technique. The speed is controlled by generating pwm pulses from microcontroller of 8051 family. Here we are using programmable embedded microcontroller for pwm based speed control of dc motor. Which develop a speed control system for a bldc motor by closed loop control technique. So, speed control of dc motors at different load conditions is a prominent field of research in order to achieve a robust system. When the voltage applied to the motor is increased and decreased, the slip s changes. Speed control of induction motor using pic microcontroller. Aug 06, 2014 doc speed control of a dc motor using micro controller 8051 1. The main advantage in using a dc motor is that the speed torque relationship can be varied to. Synchronisation, speed and direction control of dc motor 945 2. A dc brushless motor uses a permanent magnet external rotor, three phase of driving coils, one or more hall effect devices are used to sense the position of rotor, and the associated drive electronics. In this paper, a brushless dc motor with distributed winding and a special form of pmrotor with special stator periphery are described.
Development of a microcontroller based dc motor speed control. The coils are activated, one phase after the other, by the drive. Pdf microcontroller performance for dc motor speed control system. Embedded system of dc motor closed loop speed control based. Microcontroller based closed loop speed and position control of. At the heart of the dc motor controller is microcontroller at89c51.
What are the best ways to control the speed of dc motor. The microcontroller block is interfaced with dc motor using motor driver ic, the power supply block provides power supply to the project kit, and switch array. Microcontroller based closed loop speed and position control. This work reports the development of a microcontroller based control system to change the speed of a dc motor. Doc speed control of a dc motor using micro controller 8051.
The speed of the motor as well as the operation of motor in four quadrants such as forward brake, reverse brake, clockwise, anticlockwise rotation can be controlled using 8051 microcontroller. Microcontroller based dc motor speed control using pwm technique. Mohammed designed and implemented motor bidirectional dc control circuit using pulse width modulation pwm based on an operational amplifier model. The objective of developing this project is to control the speed of dc motor. The nominal voltage of the motor is 12v as well as l293d vs input voltage. In this project paper microcontroller based system to control speed of induction motor is developed using pulse width modulation technique 2. Among the many methods used in the control of the speed of a dc motor the microcontroller based. Circuit description of microcontroller based dc motor controller. Time settings are possible for forward and reverse running of the motor.
There are many applications of dc motor drives that use power electronics to control the voltage and consequently the speed or position of the motor. Speed control of induction motor using pic microcontroller block diagram. This system describes the design and implementation of the at89c51 microcontroller based closed loop dc motor speed control system that controls the speed of a dc motor through optically coupled half controlled scr bridge rectifier used as a motor driver circuit. Four quadrant dc motor speed control with microcontroller.
Development of a microcontroller based dc motor speed. The pwm wave for speed con trol is generated using atmel at89c52 microcontroller. It is a closedloop real time control system, where optical encoder is coupled to the motor shaft to provide the feedback speed signal and angular position of shaft to the. Abstractdc motor control means direction and speed control of a dc motor. Microcontroller based 4 quadrant speed control system. Direct current dc motor has become an important drive configuration for many applications across a wide range of powers and speeds, due to its easy control and excellent performance. Speed control of dc motor is very important especially in the fields including industrial applications, robotics and so on. Pdf microcontroller based dc motor speed control using. Dc motor speed control using pic microcontroller pwm method. The scope of this project includes using mplab ide to program microcontroller pic 18f4550, build hardware for the system, and interface the hardware to computer by using rs232 serial port communication. Pwm based speed control system consists of electronic components. This paper provides a system that can utilized to use dc motor for various applications. Pdf this paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor.
Conclusion with this very basic concept of direction and speed control we can move the motor clockwise and anticlockwise as a result lift can move in forward and backward direction and we can vary the speed of a dc motor. The user can enter the desired speed and the motor will run at that exact speed. Design and implementation of dc motor speed control based on. Microcontroller based closed loop speed control of dc motor. This is the basic concept behind the speed and direction control of a dc motor. Using atmel at89s52 microcontroller generate the pwm wave for speed control. In this tutorial we will see how to control the speed of a dc motor using pulse width modulation pwm. May 19, 2017 i already posted about interfacing dc motor with pic microcontroller. A microcontroller based speed control system consists of an electronic component and a microcontroller. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering gokaraju rangaraju. Microcontrollerbased dc motor speed controller open source for. We can achieve speed control of dc motor using mechanical or electrical techniques but they require large size hardware to implement but microcontroller based system provides easy way to control the speed of dc motor.
By using pwm we can easily control the average power. Mar 19, 2015 dc motor speed control using 8051 microcontroller mahesh madivali. Pid controller are designed based on matlabsimulink software to obtain the optimum position control of pid controller parameters and realized by using microcontroller to the real dc servo motor. Jan 01, 2016 pdf an experimental system for the speed and direction control of brushed dc motor using a microcontroller has been developed successfully. A high performance motor drive system must have good dynamic speed command tracking and load regulating response. Arockia edwin xavier 1,2electrical and electronic engineering, thiagarajar college of engineering, madurai tamil nadu email. Microcontrollerbased dc motor controller full electronics. Pwm based automatic closed loop speed control of dc motor. Automatic fan speed control system using microcontroller.
Speed control of a dc motor using microcontroller 8051 a project report submitted by s. Pdf microcontroller based bidirectional dc motor control. The four quadrant dc motor speed control with 8051 microcontroller is shown in the below figure. Speed control methods of various types of speed control. This article describes you how to control the dc motor using at89c51 controller or any variant of 8051 microcontroller. Automatic speed controller of a dc motor using arduino, for. A microcontroller is a single chip that contains the processor the cpu, nonvolatile memory for the program rom or flash, volatile memory for input and output ram, a clock and an io control unit. We apply this technique in conventional dc motor speed control based on our project so as to control the speed of the dc. It consists of six switches which are controlled with the help of pwm generated by pic microcontroller. Dc motor interfacing with 8051 microcontroller using l293d. Pdf microcontroller based dc motor speed control using pwm. Programming the pic16f877a microcontroller for speed control.
The signals from the button are input to the microcontroller that in turn actuates motors in controlling speed. Pwm based dc motor speed control using microcontroller. Dc motor control with pic16f84a and l293d pic microcontroller. Simple analogue bidirectional dc motor speed control. Oct 29, 2018 here we will use a technique called pwm pulse width modulation to control the speed of dc motor.
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