Dc motor speed control using microprocessor technique. Pdf microcontroller based dc motor speed control using pwm. The adaptive fuzzy controller designed and implemented in 1 is an alternative method of using microcontroller to control the speed of a dc motor. The stepper motor rotates in steps in response to the applied signals. An onoff switch is provided on the waist harness to control the start and stop of the hand movement and is connected to the 8051 microcontroller to control the motor movement. The main advantage in using a dc motor is that the speed torque relationship can be varied to almost any useful form. Stepper motor interfacingcontrol using 8085 and 8051 stepper motor a stepper motor is a device that translates electrical pulses into mechanical movement in steps of fixed step angle. Programming the pic16f877a microcontroller for speed control.
Also includes some projects that have been worked upon and also episodes to embedded system podcast. Firstly an 8051 with the required software to control the motor and secondly a suitable driver circuit. Doc speed control of a dc motor using micro controller 8051. This article shows how to interface a dc motor to an 8051 microcontroller. The brushless dc motor is actually a permanent magnet ac motor whose torque current characteristics mimic the dc motor. This paper is mainly concerned on dc motor speed control system by using microcontroller pic 16f877a.
Motor shown in the circuit has two phases, with centertap winding. Microprocessorbased control of dc motors springerlink. All these operations are part of the communication processes between microprocessor and peripheral devices. A software based feed forward control system of dc motor has been considered to calculate the load torque by tsuyoshi hanamoto 5. Speed control of a dc motor using microcontroller 8051 a project report submitted by s. Dc motor speed control using pwm with pic microcontroller. The modulation of pulse width is obtained using pulse width generator in atmega16 microcontroller. Address bus the address bus is a group of 16 lines. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering gokaraju rangaraju. There are many applications of dc motors, where we need a variable speed of dc motor. Interfacing dc motor with 8051 microcontroller using l293d. For both the motor speed control system and the positioning servo possible digital control laws are discussed. Simple microprocessor based motor speed controller. Speed control of dc motor using microcontroller free download as powerpoint presentation.
We will describe how to control motors with an arduino, but these principles can be used to control any type of actuator. Microprocessorbased digital controller for dc motor speed. Nov 03, 2011 the blog talks about variety of topics on embedded system, 8085 microprocessor, 8051 microcontroller, arm architecture, c2000 architecture, c28x, avr and many many more. The microcontroller is programmed to control the 12v dc motor movement. Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. The center taps of these windings are connected to the 12v supply. How to design a system using microprocessor 8085 to find the. Dc motor speed control using pic microcontroller pwm method. Microprocessor based digital controller for dc motor speed control m k refai discusses the procedure for implementing microprocessor based pid process control algorithms, presenting the system hardware and pid algorithm for the illustrated case of dc motor control the effectiveness of microprocessor based systems for realizing digital random logic controllers is illustrated by the design of a. The main advantage in using a dc motor is that the speed torque relationship can be varied to. This paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor. The dc motor is very difficult to contr ol unlike the stepper motor, which can be controlled by giving the appropriate control word.
Intel 8085 8bit microprocessor shrimati indira gandhi. 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. Stepper motor interfacingcontrol using 8085 and 8051. Lecture note on microprocessor and microcontroller theory and. How to control speed of dc motor using microprocessor 8085. Dc motors need much more current than a microcontroller can provide, so it needs separate drivers.
The synthesis of controller parameters is carried out by the. In this tutorial we will see how to control the speed of a dc motor using pulse width modulation. Jan 26, 20 i already posted about interfacing dc motor with pic microcontroller. Pdf microcontroller based dc motor speed control using. Microprocessor based digital pid controller for speed control. The center taps of these windings are connected to. Aug 06, 2014 doc speed control of a dc motor using micro controller 8051 1. Stepper motor control free 8085 microprocessor projects. 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. Instead of commutating the armature current using brushes, electronic. Different dc motors need different voltages and operating high voltage motor from a low voltage controller is not a feasible option. Dc motor speed control using microprocessor technique intoduction. In this paper, the micrprocessorbased control of dc motor is considered. This article describes you how to control the dc motor using at89c51 controller or any variant of 8051 microcontroller.
Microcontrollerbased dc motor speed controller kumar fig. Speed control of dc motor using microcontroller arduino. The pic16f72 was used in 15 in the control method for dc motor armature voltage control that involves the pulse width modulation pwm based on the hbridge motor circuit. This is a good electronic project report on speed control of dc motor using microcontroller by using pwm. In this system, a micro controller is interfaced with a lcd, keypad and dc motor driver. A brushless dc motor is a dc motor turned inside out, so that the field is on the rotor and the armature is on the stator. Such as traffic light control, temperature control, stepper motor control, etc. Embedded system of dc motor closed loop speed control based. Armature voltage is varied by pulse width modulation pwm of input dc voltage.
A 12v dc motor is connected to the l298n motor driver module at its out1 and out2 pins. Here the dc motor is controlled by the microprocessor 8085. The objective of developing this project is to control the speed of dc 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 phaselocked. Speed control of brushless dc motor using microcontroller. Multiple operating modes of thyristor converter has been studied using three phase fully controlled dc motor motor drive system by ahms ula 4.
Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. Interfacing stepper motor with 8086 microprocessor trainer kit. Request pdf microprocessor based digital pid controller for speed control of d. The time for the back cycle of the intel 8085 a2 is 200 ns. Abstractan mc68000, 16bit microprocessor system was. In our robotics applications we may have to control the speed of the dc motor. Microcontroller based speed control of a dc motor using pwm. A well designed 8051 dc motor system has essentially two parts. Interfacing dc motor with 8086 microprocessor trainer kit. Following things should be taken into account while designing the. Through the keyboard the operator can issue commands to control the system.
Jul 20, 2015 introduction the aim of developing this project is to control the speed of dc motor. The controller presented here uses the pulsewidth modulation pwm technique. Stepper motor control using microcontroller at89c51. 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. Oct 29, 2018 pwm based dc motor speed control using microcontroller circuit design.
There is a problem when the direction of rotation of large dc motor, operating at high speed, is suddenly changed. Dec 28, 2012 interfacing dc motor with 8086 microprocessor trainer kit. Interfacing dc motor to 8051 microcontroller using at89s51. To achieve the speed control an electronic technique called pulse width modulation is used which generates high and low pulses. The micro controller is used for controlling the dc motor by producing the pwm pulses. Interfacing dc motor to 8051 forms an essential part in designing embedded robotic projects. Can get you started though, you need a system that lets you know when your motors output shaft has gone around once. Microprocessor based digital pid controller for speed. The 8085 microprocessor is a popular microprocessor used in industries for various applications. A motor is another type of actuator, that creates motion. Structures corresponding to the digital system for dc motor speed control and digital positioning servomechanism using dc motor are proposed.
Pwm based dc motor speed control using microcontroller. The dc motor is very difficult to control unlike the stepper motor, which can be controlled by. For example, it has applications in electric cars, trucks, and aircraft. Arockia edwin xavier thiagarajar college of engineering,electrical and electronic engineering madurai,tamil nadu email. Motor this paper presents a simple scheme for implementing the speed control of d. 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.
It produces an analog voltage proportional to the speed of the motor. Learning objective 3 interfacing of a to d converter with 8085 microprocessor the objective of chapter is to interface the 8085 microprocessor interfaced and programmable peripheral interface ic 8255 with dac, adc, stepper motor and temperature controller with the help of latches and decoder. The supply current to the motor cannot be switched quickly due to the counter emf and energy stored in the. Speed control of dc motor using microcontroller by using pwm. This tutorial is about dc motor speed control with a pic microcontroller using the pwm method. This ppt shows that the process to control the speed of a dc motor using microcontroller. The 8085 performs these operations using three sets of communication lines called buses the address bus, the data bus and the control bus.
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