OVERVIEW

During his/her working experience, the graduate likely will have to design, manage or simply use a measurement system. Whatever the context and complexity of the measurement system, the principles of metrology are basically the same. The course aims thus to provide basic concepts and tools to approach metrological needs and elements for the elaboration of measurement data.

AIMS AND CONTENT

AIMS AND LEARNING OUTCOMES

Design of a measurement selecting the right method and instrumentation, based on the assigned uncertainty.
Correctly communicate the result of a measurement.
Know the principles of operation of the most common measurement instruments and the loading on a circuit caused by the instrument insertion.
Know basic measurement methods.
Acquire principles of data processing.

TEACHING METHODS

65 hours of classes, of which 15 hours of exercises; to add 3 hours of laboratory experiments

SYLLABUS/CONTENT

The course is structured in three parts:
·         Principles of metrology. Critical analysis of the elements of a measurement system: measuring circuit, instrumentation, power supply, analytic model describing the physical principles. Measurement errors. Non-ideality of instrumentation and loading effect of instrument insertion. Errors and classes of instrumentation. Measurement of resistance (low and high resistance values). Main metrological definitions after the standard UNI 4546 and more recently the GUM (Guide of Uncertainty in Measurement). Measuring units. Calibration and traceability. Filters. Laplace and Fourier transformation.
·         Instrumentation. Metrological characteristics of instrumentation and measurement chains. Electro-mechanic instrumentation: magneto-electric instruments (voltmeters, amperometers), electro-dynamic instruments (wattmeters). Analog-digital conversion. Digital multimeter. Analog and digital oscilloscope. Sensors and transducers.
·         Methods of measurement and data processing.  Measuring bridges. Power measurement in three-phase systems. Principles of statistics and probability: histograms and distributions. Central limit theorem. Sample theory. Uncertainty of type A and B.

RECOMMENDED READING/BIBLIOGRAPHY

course handouts provided on Aulaweb

TEACHERS AND EXAM BOARD

Exam Board

STEFANO SAVIO (President)

MAURIZIO FRANCO MAZZUCCHELLI

PAOLO POZZOBON

RICCARDO BOZZO (President Substitute)

ANDREA MARISCOTTI (President Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/8716/p/studenti-orario

Class schedule

L'orario di tutti gli insegnamenti è consultabile all'indirizzo EasyAcademy.

EXAMS

EXAM DESCRIPTION

The verification exams for the modules of Electrical machinery and Electrical measurements are different; both modules concur to the course "Electrical machinery and measurements" cod. 84370. Provided that the grades of each exam are sufficient, the parent exam is positively passed with grade equal to the average of the two grades, rounded up to the largest integer.

The exam consists of an oral test to take in one of the published dates. For students without attendance obligation, the earliest exam coincides with the first extraordinary exam (if scheduled).
The oral exam consists of three problems, subdivided into one or more questions. Using didactic and consultation material is not allowed.

ASSESSMENT METHODS

The exam will cover the topics presented during the classes with the aim of evaluating not only if the student has achieved a suitable level of knowledge, but also if he/she is able to quantitatively evaluate measurement circuits, showing the knowledge and ability to describe the associated electrical phenomena with correct terminology.