Quanser has a dc motor control kit with a user manual that lists at least 67 experiments1. A variable frequency drive vfd also referred to as a variable speed drive is a type of system through which speed of an induction motor can be varied. Residential and commercial appliances such as refrigerators and air conditioning systems use conventional motor drive technology. In an open loop control, the only components in the system. The duty cycle is defined as the percentage of digital high to digital low plus digital high pulsewidth during a pwm period. You can also download the file for this system by rightclicking. Name the subsystem dc motor and then save the model.
Use encoder from the dc motor to the control board. By varying the armature voltage for below rated speed. This lab allowed us to further investigate the characteristics of the various dc motor speed control schemes. Speed control of a dc motor using pwm video matlab. Since the most basic requirement of a motor is that it should rotate at the desired speed, we will require that. So controlling of motors over gsm allows user to control machines from anywhere in the world using sms message commands. Dc motor speed control methods using matlabsimulink and. Bldc motor has various application used in industries like in drilling, lathes, spinning, electric bikes etc. In this paper we consider speed control by constant flux. The speed control of the dc motor is performed using pid and flc in matlab environment. Simple speed control of dc motor 94 lab experiment 14. Pdf controlling dc motor using matlab researchgate. For example, consider the dc motor in radio controller car, if just apply a constant power to the motor, it is impossible to maintain the desired speed.
Modelling and simulation of armaturecontrolled direct. The circuit diagram of dc motor speed control based pid controller is shown in figure 4. Pandey december 1, 2009 abstract an implementation of pid controllers for the speed control of a dc motor is given in this report. In armaturecontrolled dc motors, the applied voltage va controls the angular velocity. Pdf the basic concept is to know how to control a dc motor by using. The speed response of dc motor is drawn for a bove circuit see fig. Pulsewidth modulation pwm or dutycycle variation methods are commonly used in speed control of dc motors. Also, stepper motors are good for positioning, speed control and applications which require high torque at low speed. The circuit comprises a timer ne555 ic1, mediumpower driver transistor bd239 t1, highpower switching transistor bd249 t2 and a few other discrete components. Todays industries are increasingly demanding process automation in all sectors. Dc motor speed control using pid controller implementation.
The purpose of this experiment is to design and implement a closeloop speed control of a dc motor drive. Control tutorials for matlab and simulink motor speed. 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 dc motor control experimental setup offers rich possibilities for learning the practical aspects of control systems design and implementation. In this section of dc motor projects, i will provide you the list of the tutorials in which i have already controlled the speed of the dc motor using three different software e. We shall use the same dc motor for which the parameters were calculated in the. Complete matlab code, after editing it for dc motor control, is given at the end of this project. The armature mean voltage can be varied from 0 to 240 v when the duty cycle specified in the pulse generator block is varied from 0 to 100%.
The dc motor uses the preset model 5 hp 24v 1750 rpm. Using this established relationship between the speed and the supply voltage, this paper investigates the effects of different loads and inputs on the output response of the armature controlled direct current motor. This paper describes the matlab simulink realization of the dc motor speed control methods. We use dc motors in many systems in our day to day life. The paper deals with design of control for dc motor and analysis with focus on speed control. Constant flux simulation model if the excitation flux is constant, insert the notation. Speed control of dc motor using pulse width modulation, 555. Dc motor speed control methods using matlab simulink and their integration into undergraduate electric machinery courses. Arduino motor pid speed control arduino project hub. Automation results into better quality, increased production an reduced costs. Dec 24, 2017 modeling of dc motor in matlab more detail. Sensored brushless dc bldc motor control with pic16f877a. Modeling and simulation of the dc motor using matlab and. Armature controlled dc motor next, note that the angular speed.
You must minimize the speed variations induced by such disturbances. Speed and direction control of dc motor using arduino. Dc motor speed control using matlabsimulink youtube. What are the best ways to control the speed of dc motor. It simulates a fan type load where load torque is proportional to square of speed. This proposed system provides a very precise and effective speed control system. For controller design two methods are used, namely frequency shaping method and pwm control.
Here, in this tutorial i will explain about how can make a program for dc motor speed control in matlab by creating a gui having different buttons on it to control the direction of rotation of the dc motor as well as the speed of the dc motor by sending different commands through the serial port. The motor is modeled as a rst order system and its response is studied. Speed control of dc motor using matlab linkedin slideshare. We shall use the same dc motor for which the parameters were calculated in the previous experiment. In armaturecontrolled dc motors, the applied voltage va controls the angular velocity w of the shaft. May 14, 2017 matlab closed loop control of chopper fed dc motor rkarthikkumar academy. With pid control, the speed of a motor can be archived exactly. Share on tumblr simple circuit using timer ic 555 and mosfet irf 540 given for dc motor speed control, some dc motors have unfit rpm rotation per minute for projects to control speed of dc motor this simple circuit can be used. Modeling a dc motor with pid closed loop control in matlab by. Derive an equivalent circuit like figure 5b for the tested machine use r1 r2. Jun 15, 2010 the goal of this assignment was to develop a speed control system for a dc motor. All control methodologies are implemented using matlab gui. Implementation of daq card to the control board iii. Speed control of a dc motor using bjt hbridge matlab.
Speed control of dc motor using pulsewidth modulation. Here pid controller is employed to control dc motor speed and matlab program is used. Matlab closed loop control of chopper fed dc motor rkarthikkumar academy. Pdf speed control of bldc motor using pwm technique s. Equipment list i pc with multiq3 data acquisition card and connecting board ii software environment. The aim of this project is to control the speed and direction of a dc motor without using a motor driver ic. The dc motor angular speed control is achieved by two methods. Speed control of a dc motor using controllers science.
Pid controller design for a dc motor file exchange matlab. The speed control using pi and pid control modes is explained and an implementation of the controller using opamps is given. The bldc is fed by a controlled threephase inverter. Dc motor speed controller detailed circuit diagram available. This paper reports on a pid controller for speed control of a dc motor. For this example, we will assume that the input of the system is. The motor speed input the speed display output was created using 11 different output pins. In this lab experiment, the dc motor speed control was studied. Speed control of dc motor using chopper linkedin slideshare. Nov 07, 2018 a dc motor is an inductive load and can produce back emf when we are changing the direction. Conclusion in this lab experiment the dc motor speed. Pdf speed control of dc motor by using pwm technique. A mathematical model of the process has been developed using real plant data and then conventional controllers and fuzzy logic controller has been designed.
Circuit diagram of the dc motor softstarter is shown in fig. Sensored bldc motor control using pic16f877a ccs pic c compiler this topic shows an easy way to drive a cdrom sensored brushless dc motor bldc motor using pic16f877a microcontroller with ccs pic c code. Matlab closed loop control of chopper fed dc motor. Matlab closed loop control of chopper fed dc motor youtube. There are two types of controls which were made in order to control the speed as well as the current. In addition to arduino uno board board1, it uses pic817 optocoupler ic1, pchannel irf9530 mosfet t1, 1n4007 rectifier diode d1, 12v dc motor m1 for testing, bicolour led led1 and a few other components. This file shows pid controller tuning in matlab and simullink for dc motor. Firstly, mathematical model of dc motor was created. Here is a simple dc motor speed controller circuit that can be configured to control the sweep rate of automobiles windscreen wiper. Therefore, this system can get the high torque position and low speed by using geared dc motor to provide a feedback loop. In this method, we will control the speed of the motor by controlling the magnetic flux produced by field winding. It will go slower over rocky road, slower uphill, faster downhill and so on.
It directly provides rotary motion and, coupled with wheels or drums and cables, can provide translational motion. A common actuator in control systems is the dc motor. This paper describes the speed control of a dc shunt motor using conventional controllers pid, imc and fuzzy logic controller based on matlab simulation program. Speed control techniques in sep a rtely ex i td dc mo o. A comparative analysis of performance evaluation of all. Dc motor control tutorials home the engineering projects.
The plots below show the motor shaft angle as compared to the demand signal. The variable speed drives, which can control the speed of a. This article mainly introduces making a program for the arduino pro mini on your computer using visual studio to control motor speed by a pid algorithm. Speed control of the dc motor using proportional control please read this entire section before proceeding. In this project, i will show how speed control of dc motor can be implemented using 555 and pulse width modulation pwm. In order to eliminate the effect of any back emf, four diodes are connected across the collector and emitter of each transistor. It is configured for automobile usage with negative terminal of the power supply connected to. Speed control of a dc motor file exchange matlab central. Using matlab for control systems cise 302 lab manual page 2 table of contents lab experiment 1. Modeling a dc motor with pid closed loop control in matlab. Modeling and simulation of the dc motor using matlab and labview. To see how to tune the pid controller, please see the video demo andor read the blog post. A speed control algorithm accepts a speed command as a number of steps per second and converts it to a pulse train that controls the stepper motor driver.
Stepper motor control using matlab and arduino use arduino. For creating and simulating the mathematical model matlab program with simulink extension was used. By varying field flux should to achieve speed above the rated speed. Circuit diagram of dc motor starter using arduino uno.
To control the speed of dc motor with pid controller using matlab simulink application. Design a speed controller for a dc motor using pulsewidth modulation pwm. Abstract an implementation of pid controllers for the speed control of a dc motor is given in this report. Various control methods were to be employed, both open loop and closed loop. The pid controller design and choosing pid parameters according to system response are proposed in this paper. Both approaches are simulated and compared to each other. In experiment3 and 4, the speed of the dc motor was controlled by using an openloop voltage control. To compare and analyze the result between the simulation result using a dc motor mathematical model in matlab simulink and the experimental result using the actual motor. Windows, matlab, simulink, rtw, and wincon iii srv02 dcmotor apparatus see figure 3 with. In previous tutorials of matlab, we have explained that how to use matlab to control dc. Stepper motors is a brushless dc motor that rotates in discrete steps, and are the best choice for many precision motion control applications. May 24, 2017 download dc motor direction control proteus simulation.
This example shows the simulation of an hbridge used to generate a chopped voltage and to control the speed of a dc motor. 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. The speed can be controlled from 0% to 100% as four different speeds. The arduino pro mini is used to store motor controls, pid algorithms, and to communicate with the pc. For example, cpu fans, fume extinguishers, toy cars etc. The spikes on the angular velocity plot occur as the shaft settles into the current step. The dclink voltage is adjusted through a dcdc buck converter. This example shows two dc motor control techniques for reducing the sensitivity of w to load variations changes in the torque opposed by the motor load. Below are some tweaks we did for rotating the dc motor clockwise, anticlockwise and stop using.
Design of plc based speed control of dc motor using pi controller free download abstract the purpose of this research is to analyzeimplement pi control for a simple dc shunt motor. Dc motor angular position control using pid controller. The complex motor system is composed of a dc motor drivera tachogenerator. The control algorithm is realized using a programmable logic controller. If you are using microcontroller means you can bias this timer ic through micro controller gpio pin and then you can control speed of motor by varying vr1 resistor. In this project speed of the induction motor is control by android phone with bluetooth wireless communication. Control the speed of the ac motor using bluetooth control. The variation in speed is achieved by varying the duty cycle of the pulse supplied to drive the motor.
Efficiency and reliability are the key features for the development of advanced motor drives. Dc motor speed control using pid controllers nikunj a. To design the pid controller and tune it using matlab simulink. The flux in the field winding is directly proportional to the field current and the field current is inversely proportional to the field resistance r f. First consider that our uncompensated motor rotates at 0. Control speed with a pid controller computer system. You can also visit the web page with resources for designing and tuning pid controllers. Dc motors play an important role in industrial as well as other commercial systems.
Interface dc motor with matlab simulink diagram iii. Using the continuoustime transfer function identified, draw a closedloop system block diagram showing reference input of setpoint voltage vs, output vt, and transfer functions for the motor amptach and control law gsc. The speed control of the dc motors is very essential. The electric circuit of the armature and the freebody diagram of the rotor are shown in the following figure. Jan 26, 2019 speed control of dc motor can be controlled by this method. Linear control systems laboratory manual systems engineering department revised september 2012. Using the continuoustime transfer function identified, draw a closedloop system block diagram showing reference input of setpoint voltage vs, output vt, and transfer functions for the motoramptach and control law gsc. The results show that the flc approach has minimum overshoot, minimum transient and steady state error, which show more. Objective objective of the project is to control the speed of dc motor with the fuzzy. Abstract the thesis describes about the concept of dc motor and speed control separately excited dc motor. Dc motor speed control using matlab simulink duration. Speed of dc motor can be varied by following methods armature voltage control for below base speed field flux control for above base speed armature resistance control here, we are using armature voltage control method for speed control. The motor is modeled as a rst order system and its. This paper describes a matlab simulink realization of the direct current dc motor speed control method by controlling the voltage applied to the field circuit of a.
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