Sunday, 31 March 2019

Speed control of dc motor using pll

hurry control of dc motor using pllINTRODUCTIONFeasibility Study, for final year project, is to establish whether the project is technically or financially feasible. The lay for the report is to ascertain an sense between the student and the supervisor on the title of the project. It also conveys establishing an understanding on the matter of aims and objectives. Such understanding is vital for the success of the project. The project work, that is to be undertaken, should be well think so as to oversee the problems that lay ahead. Thus, the report delivers some cortical potential into the planning phase. It gives aims and objectives for the project and explains various stages of work which will be involved. It pull ahead gives out a time plan that would direct the project itself by dint of out the year. Such a planning would ensure the success of the project. Hence, the supporting of such a planning gives Feasibility Study. AIMS Use the technique of bod Locked found trav el estimator to control the fixity of a DC motor.To create the overall system with,A kind Locked grummet (PLL) for the speed feedback.A arrange Detection Logic that would compare the substance ab substance abuser speed (set point/ absolute frequency) to the motors actual speed. A method for detection of the speed of the DC motor.OBJECTIVESA firm grip of surmisal on the stagecoach Locked spiral would clear all the concepts of such a technique and its industrial uses. To conspire a Closed closed circuit command formation that would enable the user to control the speed of the DC motor. It should be based on frequency domain design techniques ( bode diagrams).Detail work on the logic for Phase Detector or Synthesizer.Research on how the potentiality Control Oscillator (VCO) works.To use a suitable optical sensor that senses and returns the speed of the DC motor. The logic behind the foreshadows, to and from the sensor, to be calculated.Using Mat-lab for devising the transf er function and Tina for the move of the system. numbering the hardware for the system. TOPIC OVERVIEWA Phase Lock Loop (PLL) synchronizes an output signal with a reference or input signal in frequency as well as in phase.Phase Locked Loop is used in various communication networks to chuck out flutter from various signals. Here it is used to control the speed of a DC motor. This is because PLL has a capability to control the manner in which the phase of the Voltage Control Oscillator (VCO) follows a changing reference phase. In other delivery it can be said that the designer can make the hand-build to follow quickly or sluggishly to the original input signal. This typical would enable users to control the speed of the DC motor.WORK STAGESLiterature enquiryA brief research, comprising of study link to Phase Locked Loop and Control System such as closed draw in system, was conducted to facilitate in writing the feasibility report. Extensive study in the mentioned fields musti ness be obtained before the practical work is started. Research would be necessary to deal with the prospect of working out the components for the PLL Fig 2. Comprehensive research would also be required to create and build the circuits for the components in Fig1. Phase detection logic have to be devised that would require the time. Study related to transfer functions, of an parliamentary law, that uses frequency domain should be done. Further study for the announce diagrams would be needed. Simulink for the Mat-Lab and Tina would require some attention as they are the primary election tool for testing. A research in optical sensors would be seeming and the transfer of data, to and from the sensor, would need investigation. The speed of the motor and what is given by the user can be represented on a screen. An insight into it would be an option. The equipments provided, like PLL IC and VCO Unit, would require thorough study. Block Diagram DesignProtocol Design This phase of the work will be based on Mat-lab and Tina. The experiment would be simulation of the transfer function. Once the theory for the transfer function is completed, the derived function is written in Mat-lab and the corresponding bode graphs are investigated. These graphs would give a comprehensive illustration of the relevant components in the system. In other words it can be presumed, for the mat-lab simulation, that it would provide both bit of detailed information before the real circuit is strengthened and the motor is accelerated. Pseudo-CodePseudo-Code is a program code unrelated to the hardware of a particular computing machine and requiring conversion to the code used by the computer before the program can be used. This area of work deals with what is called elongated programming. The project would not require such level of programming. It would only require the simulation for the transfer function via using Mat-lab. Hence learning the software package would be crucial for th e success of the project. CAPITAL RESOURCES The total budget parceling to the project is 50. The equipment used within the project are given to be,Phase Locked Loop (PLL) IC.Op-amps ICsVCO Unit and CounterUsual lab equipmentSoftware Mat-Lab 7.0 ( seize the transfer function of the control system)Tina 6.02 (For designing and testing the circuits)PROJECT clock time PLANREFERENCEShttp// for definitions http// an insight for the VCO unit and PLL unit.Phase-locked loops design, simulation, and applications / Roland E. Best.(621.3815364 BES)Phase-locked loops theory and applications / stern L. Stensby (621.3815364 STE)Phase-Lock fundamentals/ William F.Egan(621.3815364 EDA)The art of Electronics, Second Edition/ Paulhorowitz Winfield Hill.Phase Locked Loops, 1993/ J.B.EncinasModern Control System Theory and Design, Second Edition/Stanley M.ShinnersSpeed Control of a stepper motor using PLL, University of Hertfo rdshire,2005/ Anthony RichardPhase Locked Loops, University of Hertfordshire,2003/ Mihir ShahDesign of a phase locked loop for coherent optical demodulat, University of Hertfordshire,2005/ Hua ZhouThe control second order system fo PLL, University of Hertfordshire,2006/ Mingshuhttp// for definitions http// an insight for the VCO unit and PLL unit.Phase-locked loops design, simulation, and applications / Roland E. Best.(621.3815364 BES)Phase-locked loops theory and applications / John L. Stensby (621.3815364 STE)

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