In many projects of embedded systems, we may need to control a dc motor using controller. In this project the speed of the dc motor is controlled using a potentiometer connected to the pic16f887 microcontroller. Pdf microcontroller based closed loop speed control of dc. The circuit of a simple speed controller for a mini dc motor, such as that used in tape recorders and toys, is shown in fig. Pdf microcontroller based speed control of a dc motor. Armature voltage is varied by pulse width modulation pwm of input dc voltage. To achieve the speed control an electronic technique called pulse width modulation is used which generates high and low pulses. Jul 09, 2016 the best method for speed control of dc motor is the use of pulse width modulation technique.
Here is a simple project on how to control fan or dc motor speed uisng pic 16f877 microcontroller. This paper uses the above principle to control the speed of the motor by varying the duty cycle of the pulse applied to it. Speed control of dc motor using pic microcontroller. At the heart of the dc motor controller is microcontroller. The objective of developing this project is to control the speed of dc motor. You can generate it by using timers of 805189c51,89c52 microcontroller. But when it comes to controlling the speed using microcontrollers. Programming the pic16f877a microcontroller for speed. 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. When it comes to speed, weight, size, cost, dc motors are always preferred over stepper motor. Doc speed control of a dc motor using micro controller 8051 1. The theoretical background model to show the direct relationship of voltage on the speed of dc drives in order to control the speed of a dc machine is discussed and presented. The four quadrant dc motor speed control with 8051 microcontroller.
The speed of dc motor is directly proportional to the voltage applied across. Interfacing dc motor with 8051 microcontroller using l293d. A pwm dc motor controller technology is used to control the speed. Thus by varying the pulsewidth, we can vary the average voltage across a dc motor and hence its speed. The best method for speed control of dc motor is the use of pulse width modulation technique. Atmega16 is a lowpower cmos 8bit microcontroller based on the avr risc architecture. Pdf microcontroller based dc motor speed control using. We can drive two dc motors with one l293d, in this example we are using only the first pair of drivers to drive one dc motor. The aim of this paper is to control the speed of dc motor. Jul 20, 2015 introduction the aim of developing this project is to control the speed of dc motor. The main advantage in using a dc motor is that the speed torque relationship can be varied to almost any useful form. The aim of development of this project is towards providing efficient and simple method for control speed of dc motor using pulse width modulation technique.
Interfacing dc motor to 8051 forms an essential part in designing embedded robotic projects. We have to create a pwm signal with varying duty cycle from 0% to 100% with a frequency of 50hz. The direction of dc motor can be controlled by just reversing the polarity of given supply. Controlling dc motor using microcontroller pic16f72 with pwm. Speed control in dc motor drive systems are commonly operated with the closedloop control8, whereby the feedback speed signal is generated through. The maximum current that can be sourced or sunk from a 8051 microcontroller is 15 ma at 5v. It consists of the inertia of the motor and a load j.
Dc motor control with pic16f877a and l293d circuit. Firstly an 8051 with the required software to control the motor and secondly a suitable driver circuit. Dc motor interfacing with 8051 microcontroller using l293d. Dc motor speed control using pwm method circuit explanation. With the help of pwm it is possible to control the average power delivered to a load and by thus we can easily regulate the speed of the dc motor. Interfacing dc motor with 8051 using l293d at89c51 keil c. For controlling the speed of dc motor we have various methods, but in this project we are controlling dc motor speed using pwm. Apr 27, 2019 here is a simple project on how to control fan or dc motor speed with microchip pic16f877 microcontroller. Synchronisation, speed and direction control of dc motor. Hence, if voltage across motor terminal is varied, then speed can also be varied. Speed control of dc motor using microcontroller semantic. Bakibillah and others published microcontroller based closed loop speed control of dc motor using pwm technique find, read and cite all the research you need on. Microcontroller based speed control of a dc motor using. Science speed control of dc motor using microcontroller.
It is not good to connect dc motor directly to the microcontroller. Large motors class controlling motor speed instructables. Dc motor or fan speed is controlled using pwmpulse width modulation technique. Speed control of dc motor using microcontroller arduino. Obviously with low pulse width, speed of motor gets reduced. Speed control of brushless dc motor using microcontroller. Pdf 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 with microcontroller. This article describes you how to control the dc motor using at89c51 controller or any variant of 8051 microcontroller. The fuzzy logic controller flc was also adopted in 16 for the control of the speed of brushless dc motors. Microcontrollerbased dc motor speed controller electric. This is a simple pwm based dc motor speed control system circuit using atmega8 controller. This is a method to control the output voltage with the of constant frequency switching and by adjusting on duration of switching and in other words by changing duty cycle of switching. This work reports the development of a microcontroller based control system to change the speed of a dc motor. Dc motor speed and direction control with pic16f877a and hbridge. The speed is related to the variation of the duty cycle of the pwm signal, the dc motor reaches its maximum speed. That means motor will run at a fixed speed instead of varying with amount of load. The second subprocess in the motor is a mechanical one.
The motion of a dc motor is controlled using a dc drive. So, lets get started with dc motor speed control using arduino uno. Four quadrant operation of dc motor remotely controlled by. So, in this article let us discuss about interfacing dc motor with 8051 microcontroller. Interfacing dc motor with pic microcontroller using l293d.
The pulse width output from the microcontroller would be automatically adjusted to maintain the dc power to the motor such that the entered speed percentage matches the running rpm. To control dc motor speed with pic microcontroller, we should know about these two features. Since the maximum current that can be sink from 8051 microcontroller is 15 ma at 5v. And for varying speed, there are various ways to vary speed of dc motor but the best amongst them is pwm pulse width modulation technique. At the heart of the dc motor controller is microcontroller at89c51. Pdf microcontroller based speed control of a dc motor using pwm technique warse the world academy of research in science and engineering academia. Mar 19, 2015 dc motor speed control using 8051 microcontroller. This paper is mainly concerned on dc motor speed control system by using microcontroller pic 16f877a. Interfacing dc motor to 8051 microcontroller using at89s51. Programming the pic16f877a microcontroller for speed control.
Pdf microcontroller based speed control of a dc motor using. The coils are activated, one phase after the other, by the drive. The variable speed drives, which can control the speed of a. Circuit of microcontroller based dc motor speed controller d c motor speed controllers are very useful for control ling the motion of robotic and industrial automation systems.
Pwm based automatic closed loop speed control of dc motor. The purpose of a motor speed controller is to take a signal representing the required speed, and to drive a motor at that speed. Controlling the speed of dc motor can be done by different ways like using a potentiometer and also by a controlled current to the armature. If you have worked with any variant of the 8051 microcontroller.
Four quadrant operation of dc motor remotely controlled by android application system. 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. This paper uses the above principle to control the speed of the motor. Microcontroller based speed control of dc geared motor through. Furthermore, the fan speed will boost automatically if the room temperature is raised. Pdf microcontroller performance for dc motor speed control system. This paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor. Microcontrollerbased dc motor controller full electronics. Speed control of a dc motor using microcontroller 8051 a project report submitted by s. Brushless dc motor drive integrated circuits and reference. Bldc motor has various application used in industries like in drilling, lathes, spinning, electric bikes etc.
Microcontroller based 4 quadrant dc motor speed control. 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. This ppt shows that the process to control the speed of a dc motor using microcontroller. Time settings are possible for forward and reverse running of the motor. Apr 10, 2017 it will be helpful to vary the speed of the dc motor in either clockwise or in anti clockwise direction. The modulation of pulse width is obtained using pulse width generator in atmega16. This article shows how to interface a dc motor to an 8051 microcontroller. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering gokaraju rangaraju. Pdf microcontroller based dc motor speed control using pwm. Speed control of dc motor using microcontroller free download as powerpoint presentation. Microcontroller based speed control of a dc motor using pwm. The duty cycle should be controlled by using a potentiometer so that we can control the speed of the motor. By executing powerful instructions in a single clock cycle, the. Some of the dc drives are just a rectifier with a series resistor that converts standard ac supply into dc and gives it to the motor.
Apart from these techniques, pulse width modulation is the effective way to implement motor speed control. The speed control of the dc motors is very essential. This paper presents speed control of dc motor using an 8051 series microcontroller. Vdd and vss of the pic microcontroller is not shown in the circuit diagram. The pwm wave for speed control is generated using atmel at89c52 microcontroller.
Pwm based dc motor speed control using microcontroller. Dc motor speed control using arduino and potentiometer. Simple analogue bidirectional dc motor speed control. Interfacing dc motor with 8051 using l293d at89c51. Programming the pic16f877a microcontroller for speed control of.
It is a closedloop control system, where optical encoder built in this project is coupled to the motor shaft to provide the feedback speed signal to controller. Dc motor speed control using 8051 microcontroller mahesh madivali. The pwm wave for speed control is generated using atmel at89c52 microcontroller to control the speed of the dc motor, you need a variablevoltage dc. The speed of dc motor is directly proportional to the voltage applied across its terminals. Pdf speed control of dc motor by using pwm technique. Dc motor speed control using arduino the engineering projects. The controller presented here uses the pulsewidth modulation pwm technique. 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. For example, consider the dc motor whose speed or direction of rotation of dc motor can be controlled using programming techniques which can be achieved by interfacing with 8051 microcontroller. In the circuit there are 3 push buttons, 2 for selecting the direction and the other one for stopping the motor. Speed control of dc motor using pulsewidth modulation.
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. Development of a microcontroller based dc motor speed control. The above operation is carried out by using one opto isolator and a mosfet for driving the bldc motor duly interfaced from the microcontroller. The fuzzy logic controller flc was also adopted in 16 for the control of the speed of brushless dc. May 23, 2016 thus we can count number of such applications where there is a need to change direction andor speed of dc motor. Pwm based dc motor speed control using microcontroller circuit principle the heart of this project is the 8051 microcontroller. Thus, this is all about the design and construction of fan speed control system to control the room temperature using pic16f877a microcontroller. The following topic shows how to control speed and direct of a dc motor using pic16f877a and hbridge circuit. Dc motor speed control using pic microcontroller pwm method. Mohammed designed and implemented motor bidirectional dc control circuit using pulse width modulation pwm based on an operational amplifier model.
Automatic speed controller of a dc motor using arduino, for. 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. Arockia edwin xavier thiagarajar college of engineering,electrical and electronic engineering madurai,tamil nadu email. Our integrated circuits and reference designs help you create compact, fully protected and efficient dc input speed controlled bldc drives with smooth torque and accurate speed control. Pwm dc motor speed controller circuit using pic16f877a.
Motor driver ic used for interfacing dc motor with 8051. Keywords dc motor, speed control, microcontroller, atmega8. A well designed 8051 dc motor system has essentially two parts. Then the pwm pulse width modulation technique is most effective. When the width of pulse is high, the motor will rotate with full speed. The four quadrant operation of dc motor remotely controlled by android application system is a very sustainable system for controlling the dc motor. Stepper motor control using microcontroller at89c51. Speed and direction control of dc motor using avr microcontroller. Validation of dc motor speed control using pic 16f628a microcontroller is presented in this paper.
At89c51 based dc motor controller electronics for you. Jan 20, 2016 dc motor speed control using pwm technique. Speed control in dc motor drive systems are commonly operated with the closed loop control8, whereby the feedback speed signal is generated through. Todays industries are increasingly demanding process automation in all sectors. The components and assembly of this microcontroller. Soc with integrated sensorless trapezoidal or vector control ease use and reduce timetomarket. How to build a simple pwm dc motor speed controller using atmega8.
Their are two ways to generate pulse width modulation signal using 805189c51,89c52 microcontrollers. There are numerous ways to control the speed of motor or fan. 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. Doc speed control of a dc motor using micro controller 8051. These controllers can be found with a wide range of power ratings. Speed control of dc motor using pic microcontroller the. Dc motor is the most used motor in robotics and electronics projects. When the transistor is on, the motor starts to increase speed and off then motor loses speed. The easiest way to control a relatively low current 1224v motor is by using a generic analog dc motor speed controller. Dc drive changes the speed and direction of motion of the motor. Synchronisation, speed and direction control of dc motor 945 2. 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. Automatic fan speed control using pic16f877a microcontroller.
Dc motor control with pic microcontroller mikroc projects. In some of the electronics projects you may want to control a dc motor with 8051 microcontroller. Aug 06, 2014 doc speed control of a dc motor using micro controller 8051 1. There are numerous ways to control the speed of motoror fan. This type of controller has a potentiometer to vary the speed of the motor. Stepper motor control using microcontroller at89c51 various techniques can be used to control the speed of an ac or dc motor, such as using the phaselockedloop principles, digital inputs, or analog inputs. Direction control of a dc motor using pic microcontroller. It is a closedloop real time control system, where optical encoder built in this project is coupled to the motor shaft to provide the feedback speed signal to controller. The design showed good velocity tracking performance under both load and noload conditions. Finally to set the speed of the bldc motor we also use a potentiometer connected to a0 pin of the arduino arduino program for bldc motor. When the speed is varied from 1 to 9, the speed increases, with the value 9 set as the maximum speed of the motor.
Development of a microcontroller based dc motor speed. Dc motor when interfaced with a microcontroller, can control the speed of motor, can control the direction of rotation, can also do encoding of the rotation made by dc motor i. Pdf microcontroller based closed loop speed control of. Aug 26, 2018 we can change the speed of motor from 0 to 9. This is a simple projecttutorial on how to control dc motor speed using 805189c51,89c52 microcontroller. Jan 24, 2019 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. Dc motor speed control using 8051 microcontroller youtube. Dc motor control with pic16f877a and l293d proteus. Speed synchronization of multiple motors in industries. In this project we will be able to control the speed of dc motor with potentiometer and we can adjust the speed. Oct 29, 2018 here we will use a technique called pwm pulse width modulation to control the speed of dc motor. Here is a simple project on how to control fan or dc motor speed with microchip pic16f877 microcontroller.
Motor speed controller dc motor speed controllers are very useful for controlling the motion of robotic and industrial automation systems. 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. In this tutorial we will learn that how to make an algorithm for dc motor speed control using arduino uno. Jun 16, 2015 the block diagram of four quadrant dc motor speed control with 8051 microcontroller project is shown in the above figure. Automation results into better quality, increased production an reduced costs. Circuit description of microcontroller based dc motor controller. When 0 is sent over the serial monitor, the motor runs at minimum speed that is zero. Pdf speed control of dc motor using microcontroller.
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