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“COMPUTERIZED SURVEY OF CURRENT INTENSITY IN SERIES RLC CIRCUIT VARYING POWER FREQUENCY ". ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI. DG Education and Culture. Leonardo da Vinci PARTNERSHIPS.
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“COMPUTERIZED SURVEY OF CURRENT INTENSITY IN SERIES RLC CIRCUIT VARYING POWER FREQUENCY " ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS Integration of InnoVativE MeThodologies for ELectrical MeasurementsVET-ELM
ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS WORKING GROUP Prof. Salvatore Avianidirigente scolastico Prof. Biagio De Rosa vicepreside Prof. Mariarosaria Damato inglese Prof. Vincenzo D’Antonio elettrotecnica/sistemi Prof. Lomonte Paolo TDP/Impianti elettrici Prof. Roberto Scognamiglio elettronica Prof. Vincenzo Veneruso elettrotecnica/sistemi
ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS • INDEX INTRODUCTION • EDUCATIONAL OBJECTIVES OF THE MEASURE PREREQUISITES DESCRIPTION OF THE EXERCISE COMPONENTS AND INSTRUMENTS
ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS • INDEX • TEST RUN THEORETICAL FORMULAS COMPUTERIZED DEVELOPMENT OF THE MEASUREMENT RESULTS SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT “MULTISIM” EVALUATION GRID
INTRODUCTION ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
INTRODUCTION I.T.I.S. A. Volta-Napoli IN ITALY THE TEACHING OF "ELECTRICAL MEASUREMENT" AS PART OF THE CURRICULUM OF STUDIES " INDUSTRIAL EXPERT - ELECTRICAL AND AUTOMATION SPECIALIZAZTION" IS NO LONGER AN AUTONOMUS SUBJECT. THE SUBJECT’ S CONTENT IS PART OF “ELECTRICAL ENGINEERING” INCLUDING LABORATORY HOURS DURING WHICH STUDENTS ARE TESTED THROUGH EXERCISES.
INTRODUCTION I.T.I.S. A. Volta-Napoli IN PARTICULAR THE SUBJECT "AUTOMATIC ELECTRIC SYSTEMS", HAS BEEN INTRODUCED, WHICH MOREOVER, HAS THE TASK OF CREATING A SYNTHESIS BETWEEN THE ACQUIRED KNOWLEDGE DURING THE ENTIRE COURSE OF STUDY, INCLUDING A CONTINUOUS LINK WITH OTHER DISCIPLINES, FIRST OF ALL ELECTRICAL AND ELECTRONICS ENGINEERING COMPUTING.
INTRODUCTION I.T.I.S. A. Volta-Napoli ON THE STRENGTH OF THESE INNOVATIONS, EVEN "ELECTRICAL MEASUREMENT“ TEACHING HAS EXPERIENCED AN UPGRADE, INTRODUCING ELEMENTS OF ELECTRONICS AND COMPUTERS. HERE BELOW YOU CAN SEE AN EXAMPLE OF A "MEASURES EXERCISE "
EDUCATIONAL OBJECTIVES OF THE MEASURE ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
EDUCATIONAL OBJECTIVES OF THE MEASURE I.T.I.S. A. Volta-Napoli AT THE END OF THE EXERCISE STUDENTS WILL: • GAIN AWARENESS OF THE CONDUCT OF SIMPLE AC CIRCUITS AND OF THE PHENOMENON OF RESONANCE • ACQUIRE THE ABILITY TO INTEGRATE KNOWLEDGE OF THE FOLLOWING DISCIPLINES: • ELECTRIC MEASURES • ELECTRONICS • AUTOMATIC SYSTEMS
PREREQUISITES ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
PREREQUISITES I.T.I.S. A. Volta-Napoli PUPILS SHOULD KNOW: • BASIC PRINCIPLES OF ALTERNATING CURRENT; • BASIC PRINCIPLES OF ELECTRICAL MEASUREMENT (MEASURES); • SOFTWARE USUALLY USED IN A PC; • SOFTWARE MICROSOFT EXCEL.
DESCRIPTION OF THE EXERCISE ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
DESCRIPTION OF THE EXERCISE I.T.I.S. A. Volta-Napoli THE EXERCISE PLANS TO MAKE A SERIES OF CURRENT MEASUREMENT IN ORDER TO DESCRIBE THE CONDUCT OF A A.C. CIRCUIT WHEN POWER FREQUENCY CHANGES. THE RESULTS ARE INPUTTED ON A PERSONAL COMPUTER, AND TRASFERRED THROUGH FILE TO THE SOFTWARE EXCEL FOR GRAPHIC AND ANALYTICAL PROCESSING OF DATA.
DESCRIPTION OF THE EXERCISE I.T.I.S. A. Volta-Napoli STEP OF WORK: 1 - DIRECT MEASUREMENT OF CURRENT IN A SERIES RLC CIRCUIT POWERED WITH VARIABLE FREQUENCY 2 - TRANSFER OF DIGITAL DATA MEASURED BY A DIGITAL MULTIMETRO ON A PERSONAL COMPUTER 3 - ANALYSIS OF THE BEHAVIOUR OF COMPONENTS AND CIRCUIT THROUGH AN EXCEL SPREADSHEET.
DESCRIPTION OF THE EXERCISE I.T.I.S. A. Volta-Napoli THE FOLLOWING FIGURE SHOWS THE SETUP CIRCUIT. Figure 1
COMPONENTS AND INSTRUMENTS ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
COMPONENTS AND INSTRUMENTS I.T.I.S. A. Volta-Napoli • A FUNCTION GENERATOR WITH VARIABLE FREQUENCY FROM 10 A 20.000 Hz • A RESISTOR: 1 kOhm • AN INDUCTANCE: 100 mH • A CAPACITOR: 330 nF • DIGITAL MULTIMETER DM3051 RIGOLI COMPLETE WITH USB CONNECTION AND SOFTWARE INTERFACE • PERSONAL COMPUTER • SOFTWARE MICROSOFT EXCEL
COMPONENTS AND INSTRUMENTS I.T.I.S. A. Volta-Napoli DIGITAL MULTIMETER FEATURES: • HIGH PRECISION • MULTIFUNCTIONAL • SUITABLE FOR AUTOMATIC DATA ACQUISITION • ACCESSORY WITH N. 2 SOFTWARE INTERFACE WITH PC (ULTRASENSOR AND ULTRALOGGER)
COMPONENTS AND INSTRUMENTS I.T.I.S. A. Volta-Napoli DIGITAL MULTIMETER PICTURES
COMPONENTS AND INSTRUMENTS I.T.I.S. A. Volta-Napoli DIGITAL MULTIMETER: DATASHEET MULTIMETER
COMPONENTS AND INSTRUMENTS I.T.I.S. A. Volta-Napoli DIMENSIONING OF CIRCUIT COMPONENTS : COMPONENTS HAVE BEEN CHOSEN IN ORDER TO OBTAIN A RESONANCE FREQUENCY OF APPROXIMATELY 870 Hz AND TO LIMIT THE CIRCUIT CURRENT TO A VALUE NOT EXCEEDING 5 mA
TEST RUN ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
TEST RUN I.T.I.S. A. Volta-Napoli THE CIRCUIT WILL POWERED BY A SINUSOIDAL SIGNAL VARIABLE FREQUENCY FROM 10 TO 15000 Hz N. 25 MEASURES WILL BE MADE FOR VALUES OF GROWING FREQUENCY. BY INCREASING THE FREQUENCY THE CURRENTE VALUE WILL INCREASE ACHIEVING ITS MAXIMUM VALUE AT THE RESONANCE RATE. AFTER REACHING ITS RESONANCE RATE ITS VALUE WILL DECREASE.
TEST RUN I.T.I.S. A. Volta-Napoli
THEORETICAL FORMULA ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
THEORETICAL FORMULA I.T.I.S. A. Volta-Napoli V = Z I Z = R + j (XL – XC) XL = 2*π*f*L XC = 1/(2*π*C ) fr = 1/(2π*L*C )1/2 I = V/Z
COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS I.T.I.S. A. Volta-Napoli THE RESULTS OF THE MEASUREMENTS ARE TRANSFERRED TO THE SOFTWARE TOOL KIT. ONCE ACQUIRED THE RESULTS ON AN INTERCHANGE FILE, DATA ARE INSERTED INTO AN EXCEL FILE AND PROPERLY PROCESSED
COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS I.T.I.S. A. Volta-Napoli
COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS I.T.I.S. A. Volta-Napoli
SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT “MULTISIM” ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT MULTISIM I.T.I.S. A. Volta-Napoli FOR EDUCATIONAL USE, A “MULTISIM” SOFTWARE SIMULATION WAS MADE, BEFORE THE LAB TESTS.
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM I.T.I.S. A. Volta-Napoli ON THE FOLLOWING PAGES WILL BE SHOWN : 1 – THE CIRCUIT DIAGRAM 2 – PERFORMANCE CHART WITH THE FUCTION OF CURRENT INTENSITY - FREQUENCY 3 - SURVEY ON THE CHART OF THE FREQUENCY OF RESONANCE
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM I.T.I.S. A. Volta-Napoli THE CIRCUIT DIAGRAM
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM I.T.I.S. A. Volta-Napoli PERFORMANCE CHART WITH THE FUNCTION OF CURRENT INTENSITY/ FREQUENCY (BODE)
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM I.T.I.S. A. Volta-Napoli SURVEY ON THE CHART OF THE FREQUENCY OF RESONANCE
EVALUATION GRID ISTITUTO TECNICO INDUSTRIALE STATALE “ALESSANDRO VOLTA” NAPOLI DG Education and Culture Leonardo da Vinci PARTNERSHIPS
EVALUATION GRID I.T.I.S. A. Volta-Napoli
EVALUATION GRID I.T.I.S. A. Volta-Napoli
EVALUATION GRID I.T.I.S. A. Volta-Napoli