Dc motor speed control using pwm technique pdf

This paper presents speed control of dc motor using an 8051 series microcontroller. In the previous projects, we have seen a simple dc motor control using lpc2148 and push buttons and also controlling of a servo motor using the same components. Hence, if voltage across motor terminal is varied, then speed can also be varied. Abstract this report focuses on controlling the speed of a dc motor using pwm technique. Speed control of a dc motor using pulsewidth modulation. For example in robotics it is generally used to control the moving speed of a robot whatever it may be path. May 14, 2014 iii abstract 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. Pdf speed control of bldc motor using pwm technique. The amplitude of the applied voltage is adjusted using the pwm technique.

Also read the related post stepper motor controller using at89c51 microcontroller. So, lets get started with dc motor speed control using arduino uno. In this project controller presented uses the pulse width modulation pwm technique for speed control of dc motor. A more efficient way to proceed is by using pulse width modulation technique to control the speed of our dc motor. This video shows about how to control a dc motor speed with pulse width modulation keeping frequency constant and varying duty cycle using a free running multivibrator. Permanent magnet synchronous motor and brushless dc motors are replacing dc brush motors more. Speed control methods of various types of speed control. The modulation of pulse width is obtained using cd4010b schmitt trigger and rectifier 1n4140. Dec 29, 2016 in the previous projects, we have seen a simple dc motor control using lpc2148 and push buttons and also controlling of a servo motor using the same components. This one could be the simplest example of pwm control using arduino.

On the contrary, pulse width modulation is the best method to control dc voltage applied to the terminal of the armature. Mariyammal2 1,2department of electrical and communication engineering, vivekanandha college of engineering for womenautonomous, tiruchengode. Keywords dc motor, speed control, microcontroller, atmega8, pwm. How to control dc motor speed using pwm on atmega32. Here is a simple project on how to control fan or dc motor speed with microchip pic16f877 microcontroller. Speed control of dc motor could be achieved using mechanical or. To control the speed of a motor, there are different ways. Now speed of motor need to be change in many application3.

For controlling the speed of a dc motor in an open loop control system. For example in robotics it is generally used to control the moving speed of a robot whatever it may be path finder, opportunity or any one industrial robot. Categories 2011 latest ece projects, ece and eee project abstracts, electrical projects, electronics abstracts, electronics projects topics. The modulation is a process of varying the parameter of a carrier signal in accordance with the. In this technique we can get analog results with the digital means.

This proposed system provides a very precise and effective speed control. In this work, designing motor bidirectional dc control circuit using pulse width modulation pwm based on an operational amplifier model lm324 is implemented. There are many different ways to control the speed of dc motors but one very simple and easy way is to use pulse width modulation. Speed control of dc motor using pwm technique 97836591554. When digital pwm is used, control is obtained at two levels, high and low. Pdf speed control of dc motor by using pwm technique project. Speed control of dc motor using pwm a pulse width modulation concept the purpose of a motor speed controller is to drive a system at the demanded speed. Speed control of any motor is always done y pulse width modulation, abbreviated as pwm. Pdf microcontroller based dc motor speed control using pwm. Overview we can control the speed of the dc motor by simply controlling the input voltage to the motor and the most common method of doing that is by using pwm signal. It will be helpful to vary the speed of the dc motor in either clockwise or in anti clockwise direction. Brushless dc motor control using digital pwm techniques. Dc motor speed control using pwm of pic microcontroller. Apr 27, 2019 here is a simple project on how to control fan or dc motor speed with microchip pic16f877 microcontroller.

So this project demonstrates how to vary the speed and change the. Veermata jijabai technological institute 1 speed control of dc motor by using pwm technique in order to have better open loop speed control as demand. If this voltage needs to be boosted from the dc source, it can be accomplished either before the ac stage by using a dcdc boost converter, or after the ac stage by using a boost transformer. The speed of dc motor is directly proportional to the voltage applied across its terminals. The dc motor block uses manufacturer datasheet parameters, which specify the motor as delivering 10w mechanical power at 2500 rpm and noload speed as 4000 rpm when run from a 12v dc supply. The circuit is used to control speed of dc motor by using pwm technique. There are several methods for controlling the speed of dc motors. Microcontroller based speed control of a dc motor using. Because we are modulating the onoff time, rather than the. In this chapter, speed control of a dc motor using pulse width modulation pwm technique is described. Direct current dc motors have variable characteristics and are used extensively in variable speed drives. We have explained pwm in this tutorial using 2 examples which will help you learn how to control led brightness using pwm and how to control dc motor speed using pwm. The variable speed drives, which can control the speed of a. Speed control of dc motor using pulsewidth modulation.

For example, cpu fans, fume extinguishers and many more appliances which we make use of are operated by dc. Before you continue with this tutorial, you must read first. But before we start looking at the ins and outs of pulse width modulation we need to understand a little more about how a dc motor works. Pwm control is a very commonly used method for controlling the power across loads. Dc motor speed control using arduino the engineering. Speed control of dc motor using pulse width modulation we use dc fans in many systems in our day to day life. Pwm control using arduino learn to control dc motor speed and.

Download a free power electronics control design trial. This method is very easy to implement and has high efficiency. The current work allows controlling the speed of a dc motor in both forward and reversing direction, from fully off to fully on. Pulsewidth modulation pwm or dutycycle variation methods are commonly used in speed control of dc motors. Most of the times we will have a need to adjust the speed of the motors to our requirement. Pulse width modulation is a widely used method to control the speed of motor. The speed control of brushless dc motor drive employing hard chopping pwm technique using dsp which helps in controlling the speed of dc motor 5.

Automation results into better quality, increased production an reduced costs. Todays industries are increasingly demanding process automation in all sectors. Components required 555 timer ic 12v dc motor 1n5819 x 2 1n4007 100nf 100pf 10k. A simple method to control the speed of a dc width modulation pwm technique for speed control of motor is to control driving voltage, when the voltage is dc. What are the best ways to control the speed of dc motor. Controlling of dc motor using the pulse width modulation pwm. Pdf microcontroller based dc motor speed control using. There are two ways of speed control for a dc motor, field control in this method, the eld current or current through stator is varied to control the speed of. Introduction of pulse width modulation, speed control and. Pdf speed control of dc motor by using pwm technique.

Design a speed controller for a dc motor using pulsewidth modulation pwm. Speed control of dc motor with simple anolog circuits. Arduino dc motor control tutorial l298n pwm hbridge. In this paper, to control the speed of dc motor using pulse width modulation.

But when it comes to controlling the speed using microcontrollers. Pulse width modulation is an effective method for adjusting the. Dc motor speed control using arduino the engineering projects. 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 a dc motor using pwm video matlab. Circuit diagram of pwm based dc motor speed control. In pulse width modulation, we actually control the switching duty cycle, which is the ratio of ontime to the total time of switching. Speed control of induction motor using pwm technique. Pwm technique is an excellent technique to control the analog circuits with microcontrollers digital pwm output.

In this article, we are going to learn how to control the speed of a dc motor using the pulse width modulation of a pic microcontroller. Pdf created with pdffactory pro trial version control speed of dc motor using pwm technique based on dual timer. Speed control of dc motor using microcontroller semantic. Pulsewidth modulation pwm, or pulseduration modulation pdm, is a technique used to encode a message into a pulsing signal. But in this tutorial, we are explaining simple and easy way by using the pulse width modulation pwm. Using pwm pulse width modulation to control a device is a common practice in embedded systems. Dc motor can provide a high starting torque and it is also possible.

Microcontroller based speed control of a dc motor using pwm. Project report on speed control of dc motor by using pwm technique free download as word doc. Two applications of pwm control using arduino is shown here. Download speed control of dc motor using pwm technique pdf. The speed of rotation has to be controlled as well. The duty cycle is defined as the percentage of digital high to digital low plus digital high pulsewidth during a pwm period. In the basic pulse width modulation pwm method, the operating power to the motors is turned on and off to modulate the current to the motor using mosfets. The hardware project is designed to control the speed of a bldc motor using closed loop control technique. Speed control of dc motor using analog pwm technique. Dc motor are mostly used in industries so we used to control the speed of the motor by using pwm. This digital control treats bldc motor as a digital system and regulates speed with the help of two predefined state. Here the brightness of an led can be controlled using a potentiometer. Efficiency and reliability are the key features for the development of advanced motor drives.

Speed control of dc motor can be achieved using digital or analog pulse width modulation technique. Jun 06, 2016 abstract this report focuses on controlling the speed of a dc motor using pwm technique. This article explains the structure, the speed control principle, and the features of the following three product groups that can control the speed relatively easily by using an analog input. Speed control of dc motor using pulse width modulation, 555. Speed control of dc motor with simple anolog circuits using.

Controlling the led brightness using arduino and motor speed control using arduino. In this project, we will control the speed of a dc motor using lpc2148 mcu and a potentiometer by implementing pwm technique. The performance of singlephase dc drive system controlled by uniform pwm full bridge dc dc converter which gives fast response to control the dc motor 6. Aug 23, 2012 this video shows about how to control a dc motor speed with pulse width modulation keeping frequency constant and varying duty cycle using a free running multivibrator.

Series variable speed dc motor controller 12v uses a 555 timer ic as a pwm pulse generator to regulate the motor speed dc12 volt. Pdf speed control of dc motor by using pwm vishal sharma. The electric motor speed is fixed when ac motor is connected to ac line. Apr 24, 2017 to control the speed of a motor, there are different ways. Pulse width modulation pwm with pic microcontroller. Speed control of dc motor using pwm technique pdf projects. Dc motor speed control using pic microcontroller pwm method. Bldc motor has various application used in industries like in drilling, lathes, spinning, electric bikes etc. Thus we conclude that the pwm technique is the most efficient for controlling the speed of the dc motor. The modulation of pulse width is obtained using pulse width generator in atmega16 microcontroller. The speed control of the dc motors is very essential. Generally, a dc motor consists of either an electromagnet or a permanent magnet and a wounded coil known as the armature.

Microcontroller based dc motor speed control using pwm technique conference paper pdf available december 2012 with 14,234 reads how we measure reads. Project report on speed control of dc motor by using pwm. 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. Download speed control of dc motor using pwm technique. The speed of dc motor wirelessly through pwm technique through an 8051. The required speed is cont rolled by a speed controller, which is implemented as a conventional. Apr 08, 2018 a more efficient way to proceed is by using pulse width modulation technique to control the speed of our dc motor. There are numerous ways to control the speed of motoror fan. Direct current dc motors have been widely used in many industrial applications such as electric vehicles, steel rolling mills, electric cranes, and robotic manipulators due to precise, wide, simple, and continuous control characteristics. Whereas using analog pwm, control can be obtained over a wide range of values. The pmdc consists of rotor or armature and a stator, which is a permanent magnet. Next to stepper motors, the permanent magnet dc motor pmdc is the.

The performance of singlephase dc drive system controlled by uniform pwm full bridge dcdc converter which gives fast. The modulation is a process of varying the parameter of a carrier signal in accordance with the instantaneous value of the message signal. In this technique we shall vary the width of applied pulse that will vary average voltage applied to motor and its speed will change. Pdf speed control of bldc motor using pwm technique s. Residential and commercial appliances such as refrigerators and air conditioning systems use conventional motor drive technology. Direct current is applied to the armature by means of a carbon brush or by means of electromagnetic induction.

Jul 22, 2011 a brushless dc bldc drives are known for higher efficiency, lower maintenance and higher cost this paper presents a simple digital pulse width modulation control technique for trapezoidal brushless dc bldc motor drives. Ic 555 is the popular timer chip used to make timer circuits. Speed control of dc motor using pulse width modulation. Then the pwm pulse width modulation technique is most effective. Apr 10, 2017 in this tutorial, i have controlled its speed as well by providing different voltage levels at the enable pin of the dc motor control driver l298. The inverted signal itself is composed of a pulsewidthmodulated pwm signal which encodes a sine wave. In this section of the tutorial dc motor speed control using. Pwm control using arduinohow to control dc motor and led. Pwm control using arduino learn to control dc motor. A brushless dc bldc drives are known for higher efficiency, lower maintenance and higher cost this paper presents a simple digital pulse width modulation control technique for trapezoidal brushless dc bldc motor drives. Dc motor speed controller circuit using pwm electrical.