Speed control of dc motor using pll

Speed control of dc motor using pll

Introduction:

Feasibility Study, for concluding twelvemonth undertaking, is to set up whether the undertaking is technically or financially executable. The purpose for the study is to determine an apprehension between the pupil and the supervisor on the rubric of the undertaking. It besides requires set uping an apprehension on the affair of purposes and aims. Such apprehension is critical for the success of the undertaking. The undertaking work, that is to be undertaken, should be good planned so as to supervise the jobs that lay in front. Therefore, the study delivers some penetration into the planning stage. It gives purposes and aims for the undertaking and explains assorted phases of work which will be involved. It farther gives out a clip program that would direct the undertaking itself through out the twelvemonth. Such a planning would guarantee the success of the undertaking. Hence, the certification of such a planning gives Feasibility Study.

Purposes:

Use the technique of Phase Locked based velocity calculator to command the velocity of a DC motor.

  • To make the overall system with,
  • A Phase Locked Loop ( PLL ) for the velocity feedback.
  • A Phase Detection Logic that would compare the user velocity ( set point/frequency ) to the motor ‘s existent velocity.
  • A method for sensing of the velocity of the DC motor.

Aim:

  • A steadfast clasp of theory on the Phase Locked Loop would unclutter all the constructs of such a technique and its industrial utilizations.
  • To invent a & A ; lsquo ; Closed Loop Control System ‘ that would enable the user to command the velocity of the DC motor. It should be based on frequence sphere design techniques ( bode diagrams ) .
  • Detail work on the logic for Phase Detector or Synthesizer.
  • Research on how the Voltage Control Oscillator ( VCO ) works.
  • To utilize a suited optical detector that senses and returns the velocity of the DC motor. The logic behind the signals, to and from the detector, to be calculated.
  • Using Mat-lab for inventing the transportation map and Tina for the circuit of the system.
  • Planing the hardware for the system.

TOPIC OVERVIEW:

A Phase Lock Loop ( PLL ) synchronizes an end product signal with a mention or input signal in frequence every bit good as in phase.Phase Locked Loop is used in assorted communicating webs to toss out noise from assorted signals. Here it is used to command the velocity of a DC motor. This is because PLL has a capableness to command the mode in which the stage of the Voltage Control Oscillator ( VCO ) follows a altering mention stage. In other words it can be said that the interior decorator can do the cringle to follow rapidly or sluggishly to the original input signal. This characteristic would enable users to command the velocity of the DC motor.

WORK STAGES:

  • Literature Search
  • A brief research, comprising of survey related to Phase Locked Loop and Control System such as closed cringle system, was conducted to ease in composing the feasibleness study. Extensive survey in the mentioned Fieldss must be obtained before the practical work is started. Research would be required to cover with the chance of working out the constituents for the PLL Fig 2. Comprehensive research would besides be required to make and construct the circuits for the constituents in Fig1. Phase sensing logic have to be devised that would necessitate the clip.

    Study related to reassign maps, of an order, that uses frequence sphere should be done. Further survey for the Bode diagrams would be needed. Simulink for the Mat-Lab and Tina would necessitate some attending as they are the primary tool for proving. A research in optical detectors would be probably and the transportation of informations, to and from the detector, would necessitate probe. The velocity of the motor and what is given by the user can be represented on a screen. An penetration into it would be an option. The equipments provided, like PLL IC and VCO Unit, would necessitate thorough survey.

  • Block Diagram Design
  • Protocol Design
  • This stage of the work will be based on Mat-lab and Tina. The experiment would be simulation of the transportation map. Once the theory for the transportation map is completed, the derived map is written in Mat-lab and the corresponding bode graphs are investigated. These graphs would give a comprehensive illustration of the relevant constituents in the system. In other words it can be presumed, for the mat-lab simulation, that it would supply every spot of elaborate information before the existent circuit is built and the motor is accelerated.

  • Pseudo-Code
  • Pseudo-Code is a plan codification unrelated to the hardware of a peculiar computing machine and necessitating transition to the codification used by the computing machine before the plan can be used. This country of work trades with what is called extended scheduling. The undertaking would non necessitate such degree of programming. It would merely necessitate the simulation for the transportation map via utilizing Mat-lab. Hence larning the package would be important for the success of the undertaking.

Capital Resource:

The entire budget allotment to the undertaking is & A ; lb ; 50. The equipment used within the undertaking are given to be,

  • Phase Locked Loop ( PLL ) IC.
  • Op-amps ICs
  • VCO Unit and Counter
  • Usual lab equipment
  • Software
  • Mat-Lab 7.0 ( Simulate the transportation map of the control system )
  • Tina 6.02 ( For planing and proving the circuits )

Undertaking TIME Plan

Mentions:

  • hypertext transfer protocol: //dictionary.reference.com/ for definitions
  • hypertext transfer protocol: //hem.passagen.se/communication/fm_pll_vco.html an penetration for the VCO unit and PLL unit.
  • Phase-locked cringles: design, simulation, and applications / Roland E. Best. ( 621.3815364 BES )
  • Phase-locked cringles: theory and applications / John L. Stensby ( 621.3815364 STE )
  • Phase-Lock Basics/ William F.Egan ( 621.3815364 EDA )
  • The art of Electronics, Second Edition/ Paulhorowitz Winfield Hill.
  • Phase Locked Loops, 1993/ J.B.Encinas
  • Modern Control System Theory and Design, Second Edition/Stanley M.Shinners
  • Speed Control of a stepper motor utilizing PLL, University of Hertfordshire,2005/ Anthony Richard
  • Phase Locked Loops, University of Hertfordshire,2003/ Mihir Shah
  • Design of a stage locked cringle for consistent optical demodulat, University of Hertfordshire,2005/ Hua Zhou
  • & A ; lsquo ; The control 2nd order system fo PLL ‘ , University of Hertfordshire,2006/ Mingshu
  • hypertext transfer protocol: //dictionary.reference.com/ for definitions
  • hypertext transfer protocol: //hem.passagen.se/communication/fm_pll_vco.html an penetration for the VCO unit and PLL unit.
  • Phase-locked cringles: design, simulation, and applications / Roland E. Best. ( 621.3815364 BES )
  • Phase-locked cringles: theory and applications / John L. Stensby ( 621.3815364 STE )