Pwm signals, generated from the microcontroller, control these 6 switches. 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. Hence, if voltage across motor terminal is varied, then speed can also be varied. This article describes you how to control the dc motor using at89c51 controller or any variant of 8051 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. The lpc2101 is based on a 1632bit arm7 cpu combined with embedded highspeed flash memory. The purpose of a motor speed controller is to take a signal representing the required speed, and to drive a motor at that speed. Covered are sensored, sensorless, openloop, and closedloop design. Control of electric vehicle qi huang, jian li and yong chen university of electronic science and technology of china p. Pwm based dc motor speed control using microcontroller. Pdf microcontroller based speed control of a dc motor.
Jan 01, 2016 an experimental system for the speed and direction control of brushed dc motor using a microcontroller has been developed successfully. 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. Here, we are using l293d and l298n motor driver ics to drive dc motors. Oct 29, 2018 pwm based dc motor speed control using microcontroller circuit design. The circuit consists of one 8051 microcontroller and its supporting circuitry related to oscillator and reset, l298n motor driver module, a dc motor and a few push buttons. The main purpose of this paper is to analyze, identify and make conclusion based on this. Fully assembled and programmed microcontroller atmega8 based temperature controller. Usually hbridge is preffered way of interfacing a dc motor. Circuit of microcontrollerbased dc motor speed controller d c motor speed controllers are very useful for control ling the motion of robotic and industrial automation systems.
At the heart of the dc motor controller is microcontroller at89c51. Among the many methods used in the control of the speed of a dc motor the microcontroller based method was adapted in a closedloop real time. Pdf microcontroller based dc motor speed control using. Speed control of dc motor using 8051 microcontroller. A 12v dc motor is connected to the l298n motor driver module at its out1 and out2 pins. Dc motor speed control using 8051 microcontroller youtube. Pwm based automatic closed loop speed control of dc motor. 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 is a circuit for an at89c51 based dc motor controller that can regulate the speed, direction of rotation, and the running mode of motor. Programming the pic16f877a microcontroller for speed control.
Microprocessorbased speed controi of dc motor fed from semiconverter supply. Microcontroller based speed control of a dc motor using pwm. Development of a microcontroller based dc motor speed control. The effectiveness of microprocessorbased systems for realizing digital random logic controllers is. Bldc motor rotation and controllable magnitude and frequency of the output voltage. It then displays the corresponding messages on an lcd. When the semiconductor element mosfet is in a conducting state switch closed, the diode of fig reverse biased and the input provides energy both to the load both in coil linearly charging. For example, atmel has produced an inexpensive starter kit, the atavrmc323, for bldc motor control based on the atxmega128a1 8bit microcontroller. So, we use motor driver circuit in between a dc motor and the microcontroller. Apr 17, 2017 designers can experiment with 8bit microcontroller based development kits to try out control regimes before committing on the design of a fullsize motor.
Pid controller are designed based on matlabsimulink software to obtain the optimum position control of. This chapter discusses the development of a mixed signal microcontroller based dc motor control project, which has been used for the purpose of teaching motor speed control theory. 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. Microcontroller based speed control of dc motor mohdrashid sheikh, mohd shoeb, rizwan ahmed anjuman college of engineering and technology, nagpur, india abstract direct current dc motor has already become an important drive configuration for many applications across a wide range of powers and speeds. This work reports the development of a microcontroller based control system to change the speed of a 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. Vf control of 3phase induction motors using pic16f7x7.
Speed control of a dc motor using microcontroller 8051 a project report submitted by s. Jan 24, 2019 hence, it is not good to interface dc motor directly to the controller. The dc motor is an electrical machine with a rotating part termed as a rotor which has to be controlled. Fully assembled, programmed and tested circuit board as shown in picture. The system proposed in this paper is speed control of dc motor based on tms microcontroller using pwm technique.
The speed control of the dc motor is achieved using standard. Pdf an experimental system for the speed and direction control of brushed dc motor using a microcontroller has been developed. Dc motor interfacing with 8051 microcontroller using l293d. Pdf microcontroller based dc motor speed control using pwm. Download book pdf embedded microcontroller interfacing pp 83102 cite as. This paper presents speed control of dc motor using an 8051 series microcontroller. Interfacing dc motor with pic microcontroller using l293d. Dc motors are widely used in speed and direction control because control of these motors are easier than other motors. Microcontrollerbased dc motor speed controller kumar fig. Microcontroller based temperature controller electronics.
It is not good to connect dc motor directly to the microcontroller. To control dc motor speed with pic microcontroller, we should know about these two features. 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. The main purpose of dc interfacing with 8051 microcontroller is for controlling the speed of the motor. 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. Aug 06, 2014 doc speed control of a dc motor using micro controller 8051 1.
Dc motor speed control using pic microcontroller pwm method. Interfacing dc motor with 8051 microcontroller using l293d. Since the maximum current that can be sink from 8051 microcontroller is 15 ma at 5v. Dc motors are widely used in speed and direction control. Microcontroller based dc motor control jayshree sahu,s. Microcontroller controlled bldc drive for electric v ehicle.
Motor drive the 3phase induction motor is connected to a 3phase inverter bridge as shown in figure 3. The code in this application note was developed with the microchip pic16f877 pic microcontroller, in. Circuit description of microcontrollerbased dc motor controller. Pdf microcontroller based bidirectional dc motor control. Arockia edwin xavier thiagarajar college of engineering,electrical and electronic engineering madurai,tamil nadu email. The controller presented here uses the pulsewidth modulation pwm technique. Four quadrant dc motor speed control with microcontroller. This paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor. In this part of tutorial we will learn to interfacing a dc motor with a microcontroller. I just made a bldc motor controller, but id like it to be able to go to higher frequencies have less dead time, faster firmware, etc. Doc speed control of a dc motor using micro controller 8051.
Design and implementation of dc motor speed control based on. So you can see dc motors are no less than a stepper motor. In this report i present a microcontroller based dc motor speed controller. Dc motors play a vital role in most of the industrial areas. Microcontroller based speed control of a dc motor using. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering gokaraju rangaraju. Programming the pic16f877a microcontroller for speed control of. Pdf this paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor. They are mainly used for the mechanical movements of physical applications such as media drives, power plants, lifts, elevators, conveyers, belt driven loads printing press etc. Development of a microcontroller based dc motor speed. Automatic speed controller of a dc motor using arduino, for. Armature voltage is varied by pulse width modulation pwm of input dc voltage.
Pdf microcontroller based speed control of a dc motor using. Pdf an experimental system for the speed and direction control of brushed dc motor using a microcontroller has been developed successfully. In particular, im aiming for 20khzto50khz range, but am having trouble getting beyond 10khz without seeing my top speed drop off significantly. The pid controller are used to control position of the dc servo motor, while the speed motor are control by manually run with a specified performance requirement. How to build a simple pwm dc motor speed controller using atmega8. Introduction this application note demonstrates the use of a low cost nxp semiconductors lpc2101 microcontroller for bidirectional brushed dc motor control. Microcontroller based 4 quadrant dc motor speed control. Among the many methods used in the control of the speed of a dc motor the microcontroller based. Abstract dc motor control means direction and speed control of a dc motor. Vdd and vss of the pic microcontroller is not shown in the circuit diagram. These days many ic manufacturers have hbridge motor drivers available in the market like l293d is most used hbridge driver ic. The speed of dc motor is directly proportional to the voltage applied across its terminals. The modulation of pulse width is obtained using pulse width generator in atmega16.
At89c51 based dc motor controller electronics for you. In many projects of embedded systems, we may need to control a dc motor using controller. 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. Temperature can be set using buttons provided on kit. This circuit controls the temperature of any heating device which is connected to output relay.
Jun 16, 2015 the block diagram of four quadrant dc motor speed control with 8051 microcontroller project is shown in the above figure. Speed control of dc motor using microcontroller semantic. The power inverter has 6 switches that are controlled in order to generate 3phase ac output from the dc bus. Mar 19, 2015 dc motor speed control using 8051 microcontroller.
The performance of the converter parameter will be tested and observed based on several pwm switching schemes. The speed control of dc motor is very crucial in applications where precision and protection are of essence. The components and assembly of this microcontroller circuit are highlighted in this paper, and the constructed circuit tested. Apart from these techniques, pulse width modulation is the effective way to implement motor speed control.