Speed control of dc motor using matlab pdf function

Today, i am going to share my knowledge with all of you guys about how to do the dc motor direction control in matlab using serial communication with arduino uno. 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. Pdf design and implementation speed control system of dc motor. The feedforward gain kff should be set to the reciprocal of the dc gain from va to w. To control the speed of dc motor with pid controller using matlabsimulink application. Here we are going to see, how to control the speed of the small dc motor using 555 timer. By eliminating is we can get the following transfer function, where the rotating speed is the output and the voltage is an input. Speed control of a dc motor using bjt hbridge matlab. Dc motor angular position control using pid controller with. Doubleclick the function block, and enter the expression for torque as a function of speed. We shall use the same dcmotor for which the parameters were calculated in the.

The transistor acts like a switch, controlling the power to the motor. You must minimize the speed variations induced by such disturbances. Speed control of the dc motor using proportional control please read this entire section before proceeding. The speed response of dc motor is drawn for a bove circuit see fig. Apr 06, 2011 pin 3 is the enablepin which i can control the speed of motor. It directly provides rotary motion and, coupled with wheels or drums and cables, can provide translational motion. This paper contains introduction to using an arduino board and simulink pi controller in closed loop system. The pid controller design and choosing pid parameters according to system response are proposed in this paper. This example shows how to use the matlab support package for arduino hardware to control a hobby servo motor. Dc motor speed control in matlab the engineering projects.

Speed control of a dc motor using controllers science. Dc motor speed control system the speed control of a motor is frequently required in industrial applications, robotics, home appliances, etc. The duty cycle is defined as the percentage of digital high to digital low plus digital high pulsewidth during a pwm period. The basic principle of operation is described by faradays law. Pi controller for dc motor speed realized with arduino and. For creating and simulating the mathematical model matlab program with simulink extension was used. This paper describes the matlab simulink realization of the dc motor speed control methods, namely field resistance, armature voltage and armature resistance control methods, and feedback control system for dc motor drives. Generally, a dc motor consists of either an electromagnet or a permanent magnet and a wounded coil known as the armature.

Here dc motor control system was simulated using mpc with considering delay effects. Experiment 5 dc motor speed control walter scott, jr. The maximum duty cycle can be 100%, which is equivalent to a dc waveform. The dc motor block uses manufacturer datasheet parameters, which specify the motor as delivering 10w mechanical power at 2500 rpm and noload speed as.

Pin 3 is the enablepin which i can control the speed of motor. Therefore, this system can get the high torque position and low speed by using geared dc motor to provide a feedback loop. A linear model of the system can be extracted from the simulink model into the matlab workspace. Hence, the induction machine is a doubly excited machine in the same sense as the synchronous and dc machines. Modeling and simulation of the dc motor using matlab and. Learn how to rotate a servo motor using matlab commands control servo motors. 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. Figure 4 open loop transfer function of dc motor if we consider t load 0, s. Transfer function using laplace transforms the above equations can be expressed in terms of s. Dec 24, 2017 modeling of dc motor in matlab more detail. Fuzzy logic based speed control of dc motor is designed.

The speed of dc motor is controlled using arduino programming platform and matlabs simulink coder. Speed control of a dc motor file exchange matlab central. Pid control of a brushless dc motor siddharth jawahar, mathworks learn how to automatically tune gains of a cascaded pid controller that controls the inner voltage and the outer speed loop of a brushless dc motor with a trapezoidal backemf. Examples functions and other reference release notes pdf documentation. To design the pid controller and tune it using matlabsimulink. The aim of this project is to control the speed and direction of a dc motor without using a motor driver ic.

A common actuator in control systems is the dc motor. Connect the output of the function block to the torque input port, tm, of the machine block. The idea of a speed control system is to maintain the speed of the motor at the desired value under various condition. It will be described how to program arduino with simulink coder and in the end we. Publishers pdf, also known as version of record includes final. The dc motor uses the preset model 5 hp 24v 1750 rpm. In armaturecontrolled dc motors, the applied voltage va controls the angular velocity.

Build a model of a dc motor, modify the parameters, run the model, and examine. Modeling and simulation of the dc motor using matlab and labview. Dc motor with speed and current closed loops, driven by etpu on mcf523x, rev. Threephase induction 208v motor with matlab revised. Pid controller design for a dc motor file exchange matlab. Apr 08, 2017 you must have a look at my previous tutorial dc motor direction control using arduino.

A comparative analysis of performance evaluation of all controllers has. To control the speed of dc motor with pid controller using matlab simulink application. Here pid controller is employed to control dc motor speed and matlab program is used. The constraints value can be varied to a desired value by using mpc 3. Pi controller for dc motor speed realized with arduino and simulink.

The electric equivalent circuit of the armature and the freebody diagram of the rotor are shown in the following figure. To design the pid controller and tune it using matlab simulink. For controller design two methods are used, namely frequency shaping method and pwm control. Speed and direction control of dc motor using arduino. Add a dc voltage source block from the simscape electrical specialized power systems fundamental. Speed control of a dc motor using pwm video matlab. Dec 01, 2014 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. July, 2018 3 of 11 the rotor receives its excitation by induction from the armature field. Concepts of dc motor for there are two types of motor. Now after your current folder is selected, you can click on arduino.

Now,i have a question, can i just adjust the speed using slider in gui. Dc motor direction control in matlab the engineering. Control speed with a pid controller computer system. However during this example we will be looking at the position, as being the output. Control tutorials for matlab and simulink motor speed. The speed control of the dc motor is performed using pid and flc in matlab environment. Fuzzy speed control of separately excited dc motor using armature voltage control method. 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. All control methodologies are implemented using matlab gui. The circuit of a simple speed controller for a mini dc motor, such as. Checking the stability of the openloop transfer fun ction in matlab using. An inner feedback loop controls current and an outer feedback loop controls motor speed. Design a speed controller for a dc motor using pulsewidth modulation pwm. Speed control of dc motor using pulsewidth modulation.

This file shows pid controller tuning in matlab and simullink for dc motor. Dc motor direction control in matlab the engineering projects. Motor will spin in full speed when the arduino pin number 3 goes high. The root locus of the dc motor transfer function is shown in figure 9. The ampl itude of the appl ied voltage is adjusted using the pwm technique. Modeling a dc motor with pid closed loop control in matlab by. Nov 07, 2018 a dc motor is an inductive load and can produce back emf when we are changing the direction. Nov 08, 2017 unsubscribe from rkarthikkumar academy. Dc motor with speed and current closed loops, driven by.

Abstract the thesis describes about the concept of dc motor and speed control separately excited dc motor. Complete matlab code, after editing it for dc motor control, is given at the end of this project. Various control methods were to be employed, both open loop and closed loop. I hope you all will be absolutely fine and having fun. Jun 15, 2010 the goal of this assignment was to develop a speed control system for a dc motor. Dc motor speed control using pid controller implementation. Dc motor angular position control using pid controller. 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.

Firstly, mathematical model of dc motor was created. 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. Dc motor speed control using pid controller implementation by. Both approaches are simulated and compared to each other. Modelling and simulation of armaturecontrolled direct. Thus by varying the pulsewidth, we can vary the average voltage across a dc motor and hence its speed. To compare and analyze the result between the simulation result using a dc motor mathematical model in matlabsimulink and the experimental result using the actual motor. There are many other applications of speed control of dc motor. In order to eliminate the effect of any back emf, four diodes are connected across the collector and emitter of each transistor. For this example, we will assume that the input of. A statespace controller for dc motor position control. Dc motor speed control methods using matlabsimulink and their integration into undergraduate electric machinery courses. 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. We will now employ these models within simulink to simulate the system response and design different approaches to control.

In this report, we have implemented a dc motor speed control system. In this chapter, speed control of a dc motor using pulse width modulation pwm technique is described. This paper describes the matlabsimulink realization of the dc motor speed control methods. In armaturecontrolled dc motors, the applied voltage va controls the angular velocity w of the shaft. It simulates a fan type load where load torque is proportional to square of speed. In this paper we consider speed control by constant flux. Speed and position control of a dc motor using fractional.

Simulink modeling page we generated two different dc motor models in simulink. Dc motor speed and position control using discretetime fixed order. A mathematical model of the process has been developed using real plant data and then conventional controllers and fuzzy logic controller has been designed. In this example, you model a dc motor driven by a constant input signal that approximates a pulsewidth modulated signal and look at the current and rotational motion at the motor output. The paper deals with design of control for dc motor and analysis with focus on speed control. Speed up digital control design of dcdc converters with simulink feedback. 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%. I will try to teach you about matlab code using picture so that it can be easy in understanding. The dc motor angular speed control is achieved by two methods. Speed control of dc motor using matlab linkedin slideshare. Add an interpreted matlab function block from the simulink userdefined functions library.

I have the analog write value from 0 255 to adjust the speed, then i wish to adjust the speed when my motor move using slider. Serial communication is a very common and fast mean of communication now a days. Modeling a dc motor with pid closed loop control in matlab. Pdf fuzzy speed control of separately excited dc motor. In the first one a model for dc motor speed control is. Below are some tweaks we did for rotating the dc motor clockwise, anticlockwise and. Building projects using small permanent magnet dc motor for cars, robots, quads requires a speed controllers to make them work flawlessly. Flc controller 5x5 control output membership function 33 figure 326. Direct current is applied to the armature by means of a carbon brush or by means of electromagnetic induction. To see the completed model, open the pwmcontrolled dc motor example. The closed loop speed control of a brush dc motor is developed applying the. Arduino pin 3 is used to turn the transistor on and off and is given the name motorpin in the sketch. Dc motor speed control methods using matlabsimulink and. Fuzzy controller based speed control of dc motor file.

The circuit diagram of dc motor speed control based pid controller is shown in figure 4. The aim of this project is to control the speed of a dc motor using the lpc2148 mcu with the help of a potentiometer. Add the following blocks to the model you just built to address these functions. Dec 29, 2016 but if we introduce the speed control of the motor, we can run the motor or fan at slower speeds under normal conditions and at higher speeds when required.