Speed control of dc motor using programmable logic controller. Dc motor speed control using pwm with pic microcontroller. 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. Dc motor speed control using pic microcontroller pwm method. As soon as the power supply is switched on, the dc motor starts gaining speed and if you. The speed of dc motor can be control by usingscrin ac circuit as shown in the below figure. In this project dc motors speed is controlled by sending the command through pc. The block diagram of four quadrant dc motor speed control with 8051 microcontroller project is shown in the above figure. A speed control system for eddy current motors is provided in which the current to the motor from a constant frequency power source is varied by comparing the actual motor speed signal with a. What are the best ways to control the speed of dc motor. In many projects of embedded systems, we may need to control a dc motor using controller. For the generation of these pulses a microcontroller at89c51 is used. Dc motors are widely used in speed and direction control because control of.
The speed control of dc motor is very crucial in applications where precision and protection are of essence. To reverse a dc motor, you need to be able to reverse the direction of the current in the motor. This paper is mainly concerned on dc motor speed control system by using. To drive the dc motor, a four channel monolithic integrated buffer circuit was used. The dc motor speed control project is intended to manage the pace of a dc motor by means of an 8051 sequence microcontroller. Pdf microcontroller based dc motor speed control using. Bldc motor with hall sensors and speed closed loop, driven by etpu on mpc5554, rev. The new topology of speed control of induction motor using fig. Simple microprocessor based motor speed controller. The adaptive fuzzy controller designed and implemented in 1 is an alternative method of using microcontroller to control the speed of a dc motor.
Practical applications in which speed and direction of dc motor can be controlled by interfacing with 8051 microcontroller are discussed below. So, lets get started with dc motor speed control using arduino uno. To control the speed of the dc motor, you need a variablevoltage dc power source. Since the maximum current that can be sink from 8051 microcontroller is 15 ma at 5v. The effectiveness of microprocessor based systems for realizing digital random logic controllers is illustrated by the design of a controller based on an mc68b00, using e 2 prom rather than ram or rom to enhance flexibility and avoid memory corruption or power interrupt.
The brushless dc motor is actually a permanent magnet ac motor whose torque current characteristics mimic the dc motor. It is not good to connect dc motor directly to the microcontroller. The dc motor is very difficult to contr ol unlike the stepper motor, which can be controlled by giving the appropriate control word. This paper describes a matlabsimulink realization of the direct current dc motor speed control method by controlling the voltage applied to the field circuit of a separately excited dc motor in. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering gokaraju rangaraju. Microprocessor based closed loop speed control of dc motor using. Scr dc motor control the speed of dc motor can be control by using scr in ac circuit as shown in the below figure. Speed control ofdc motorusingmicrocontroller oral presentation on prepared by 1. Stepper motor interfacingcontrol using 8085 and 8051. Dc motor with speed and current closed loops, driven by. 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. 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 objective of developing this project is to control the speed of dc motor.
Structures corresponding to the digital system for dc motor speed control and digital positioning servomechanism using dc motor are proposed. In this report, we have implemented a dc motor speed control system. In this paper, the micrprocessorbased control of dc motor is considered. Dc motor, operating at high speed, is suddenly changed. Microcontroller based speed control system consist of electronic component. Pulsewidth modulation, pi control, pole placement, steadystate error, disturbance rejection, saturation, integrator windup, embedded control. It will be helpful to vary the speed of the dc motor in either clockwise or in anti clockwise direction. Doc speed control of a dc motor using micro controller 8051. By using pwm we can easily control the average power delivered to a load and by thus we can easily control the. Brushed dc motor drive circuits, brushless dc motor drive circuits, stepper motor drive circuits, drive software, writing a pwm value to the ccp registers with a midrange picmicro.
In this tutorial we will see how to control the speed of a dc motor using pulse width modulation. This switch array is used to send the control signals to the microcontroller. Motor control 119 user adjusts the speed control or when the microcontroller receives a command through the electronic interface, the microcontroller then instructs the current sinksource dac e. The uln2003 ic and the l293d motor driver are used to drive the stepper motor as the controller cannot provide current required by the motor. Jan 26, 20 in this tutorial we will see how to control the speed of a dc motor using pulse width modulation. Interfacing dc motor with 8051 using l293d at89c51 keil c. Speed control of dc motor using programmable logic. This paper presents speed control of dc motor using an 8051 series microcontroller. Control tutorials for matlab and simulink pi control of.
There are many applications of dc motors, where we need a variable speed of dc motor. Dc motor control using an hbridge itp physical computing. If you have worked with any variant of the 8051 microcontroller, you might remember that 8051 doesnt have a. In this paper, implementation of the mc68hc11e9 microcontroller for speed control of dc motor fed by a dc chopper has been investigated. The pwm wave for speed control is generated using atmel at89c52 microcontroller. Chapter 4 shows and discusses the result of the speed control dc motor system using pid controller. Most of the electric drive systems should possess these benchmark properties like linear control, reliability and stable operation. Microcontroller based speed control of induction motor. The main advantage in using a dc motor is that the speedtorque relationship can be varied to almost any useful form. By using pwm we can easily control the average power delivered to a load and by thus we can easily control the speed of the dc motor. Interfacing dc motor with 8051 using l293d the dc motor is connected to the first pair of drivers and it is enabled by connecting en1 to logic high 5v.
Arduino is directly connected to pc through the usb cable and command is given to arduino on serial monitor of the arduino ide. Microcontroller based speed control of induction motor using. Four quadrant dc motor speed control with microcontroller. Since the l293d motor driver has option for four output pins, only a bipolar stepper motor can be driven. The required speed is controlled by a speed controller, which is implemented as a conventional proporti onalintegral pi controller. Control the speed of brushless dc motor using bluetooth. Free motor control books download ebooks online textbooks. Dc motor with speed and current closed loops, driven by etpu. The speed of dc motor is directly proportional to the voltage applied across. Dc motor speed control using arduino the engineering. The practical application of l293d ic is l293d acts as an interfacing device dc motor interfacing with 8051 microcontroller by which we can control the speed and direction of the motor. It produces an analog voltage proportional to the speed of the motor.
Dc drives, microprocessor control, lmd 18200, servo motors, control systems. 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. Direct current is applied to the armature by means of a carbon brush or by means of electromagnetic induction. The idea of a speed control system is to maintain the speed of the motor at the desired value under various condition. Aug 06, 2014 doc speed control of a dc motor using micro controller 8051 1. The potential use of microprocessors to control some or all electronic. This forces the regulator to change the output voltage to the motor up or down, respectively, to. Control the speed of brushless dc motor using arduino and bluetooth module hc05. Programming the pic16f877a microcontroller for speed. The ampl itude of the appl ied voltage is adjusted using the pwm technique.
Microcontroller based speed control of a dc motor using. When the dc motor is switched on, it takes certain time to reach the full speed. In this activity we will design and implement a speed controller for a simple dc motor. Oct 29, 2018 pwm based dc motor speed control using microcontroller circuit principle the heart of this project is the 8051 microcontroller. Stepper motor interfacing with 8051 microcontroller. Through this paper, it can be concluded that microcontroller pic 16f877a can. Though most motor driver chips these days are not in fact hbridge circuits, the term still persists. For example, it has applications in electric cars, trucks, and aircraft. Microprocessor based motor speed controller pdf microprocessorbased speed controi of dc motor fed from semiconverter supply. Arockia edwin xavier thiagarajar college of engineering,electrical and electronic engineering madurai,tamil nadu email. There are various applications in industry which utilize dc drives to achieve. Microprocessor control of dc motor drives ijireeice. 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.
Doc speed control of a dc motor using micro controller 8051 1. 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. Therefore, if voltage through motor terminal is different, then pace can too be different. The stepper motor rotates in steps in response to the applied signals. Abstractan mc68000, 16bit microprocessor system was. In this paper, a simplified approach for speed control of dc motor using programmable logic controller plc is presented. The proposed system is suitable for different industrial applications such as subway cars, trolley buses, or batteryoperated vehicles. Motor control suppose we wish to use a microprocessor to control a motor or to control the load attached to the motor.
The synthesis of controller parameters is carried out by the. Abstract the electric drive systems used in many industrial applications require higher. It is easy, fast and effective by this method of control to vary motor speed from 0 to 100% of rated speed. I already posted about interfacing dc motor with pic microcontroller. This approach is based on providing a variable dc voltage to dc motor from a. Here the dc motor is controlled by the microprocessor 8085. Speed control of brushless dc motor using microcontroller. How to control the speed of brushless dc motor without. Microprocessorbased digital controller for dc motor speed. As a microcontroller is used to set the speed ranges which is done by changing the duty cycles time period in the program. The first circuit in this project is implemented using an l293d motor driver ic.
Purpose of a motor speed controller is to take a signal representing the required speed and to drive a motor at that speed. Chapter 4 shows and discusses the result of the speed control dc. The scr a and b rectifier, the op voltage of transformer t1 and apply this pulsating dc voltages to the armature winding and rectifier c supplies similar voltages to the motor field winding. The effectiveness of microprocessorbased systems for realizing digital random logic controllers is illustrated by the design of a controller based on an mc68b00, using e 2 prom rather than ram or rom to enhance flexibility and avoid memory corruption or power interrupt. Bldc motor with hall sensors and speed closed loop, driven. Microcontroller based speed control of dc geared motor through.
This tutorial is about dc motor speed control with a pic microcontroller using the pwm method. Mar 04, 2018 also read the related post pwm based dc motor speed control using microcontroller. Pcb of the control circuit has also been designed and fabricated. In this chapter, speed control of a dc motor using pulse width modulation pwm technique is described. Bldc motor with hall sensors and speed closed loop, driven by. To achieve the speed control dac is used which generates voltages gradually according to. Pdf speed control of dc motor using microcontroller. The classic way to do this is using an hbridge circuit. Direction of rotation of dc motor is changed by initiating an interrupt signal to the microcontroller using push switches. In particular, we will choose and tune the gains of a pi. Speed control of dc motor with pc interface is an easy diy project. Instead of commutating the armature current using brushes, electronic.
Microcontroller based dc motor speed control using pwm technique conference paper pdf available december 2012 with 14,158 reads how we measure reads. In our robotics applications we may have to control the speed of the dc motor. Dc motor interfacing with 8051 microcontroller using l293d. 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. Dc motor speed control system the speed control of a motor is frequently required in industrial applications, robotics, home appliances, etc. Microcontrollers can provide easy control of dc motor. Dc motor is very crucial in applications where precision and protection are of essence. Pdf microcontroller performance for dc motor speed control system. Voltagefrequency based speed control of ac motor 3. Stepper motor control using 8051 microcontroller principle the main principle of these circuits is to rotate the stepper motor step wise at a particular step angle. This paper reports a microcontroller based control system to change the speed and direction of rotation of dc motor. Pdf microcontroller based dc motor speed control using pwm. Generally, a dc motor consists of either an electromagnet or a permanent magnet and a wounded coil known as the armature. Pwm based automatic closed loop speed control of dc motor.
Dc motor speed control using microprocessor technique intoduction. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology. Pwm based dc motor speed control using microcontroller. Another set up consisted of half bridge rectifier consisting of thyristor wherein the speed control for the same dc motor was carried out using the firing angle of the thyristor. Microprocessorbased control of dc motors springerlink. Pwm based dc motor speed control using microcontroller circuit principle the heart of this project is the 8051 microcontroller. The motor speed depends on the amplit ude of the applied voltage.
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. Bose school of engineering supreme knowledge foundation group of institutions mankundu,hooghly 2. The coils are activated, one phase after the other, by the drive. The hardware implementation of speed control consist the motor driver circuit plc software and dc motor which speed we are going to control. The motor sees this as a lower overall dc input voltage, and slows down. Microprocessorbased 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 microprocessorbased systems for realizing digital random logic controllers is. Jul 20, 2015 speed control of dc motor using microcontroller 1. Control tutorials for matlab and simulink pi control of dc. Dc motor control tips n tricks pdf 36p this note explains many basic circuits and software building blocks commonly used to control motors. Speed control of a dc motor using microcontroller 8051 a project report submitted by s. Dc motor with speed and current closed loops, driven by etpu on mcf523x, rev. The pace of dc motor is straightforwardly relative to the voltage functional across its terminals. The design requirement of the dc motor system is set to design the controller.