Course detail

Fundamentals of Reliability in Electrical Engineering

FEKT-MKC-ZSEAcad. year: 2023/2024

The course deals with the issue of reliability, the basic concepts, the use of statistics in reliability calculations of reliability indicators. In addition, students learn the reliability models, backup systems and methods of reliability analysis. Another part of the course is devoted to the operating model and stress, degradation mechanisms in materials, elements and systems.

Language of instruction


Number of ECTS credits


Mode of study

Not applicable.

Entry knowledge

The subject knowledge on the Bachelor´s degree level is requested.

Rules for evaluation and completion of the course

upto 20 points from seminars (student will receive these points by the individual work in the field of reliability and its presentation).
upto 80 pointsfrom written examination.
The test focuses into the issues of reliability discussed in lectures and seminars.

The content and forms of instruction in the evaluated course are specified by a regulation issued by the lecturer responsible for the course and updated for every academic year.


The aim of the subject is to make students familiar with the problems of reliability of electrotechnical products and introduction of the system of quality into electrotechnical production.
The student is able to:
- define the basic concepts of reliability,
- describe methods of reliability analysis systems,
- explain the methods of reliability,
- explain the issue of risk in production,
- calculate selected indicators of system reliability.

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Hauschild-Mosch: Statistic fur Elektrotechniker, Berlin (DE)
Bednařík a kol.: Technika spolehlivosti v elektronické praxi (CS)

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme MKC-EVM Master's, 1. year of study, summer semester, compulsory

Type of course unit



26 hours, optionally

Teacher / Lecturer


Introduction to the study of reliability. Basic conceps of reliability.
Mathematical statistics. Random variable, utilization of random variable distribution in reliability. Exponential distribution.
Quantile. Spot and interval estimation of parameters of the basic set. Chi-quadrat and Student's distribution.
Expentable objects. Reliability characteristics of expentable objects.
Repairable objects. Reliability characteristics of repairble objects.
Serial and parallel reliability models. Combined models.
Methods of creating reserves of systems. Forms and function of reserves. Static reserve. Dynamic reserve.
Introduction of quality system ISO 9000.
Degradation factors affecting electrical equipment. Relation of operating, partial and model stresses.
Degradation mechanisms in materials, element and systems.
Diagnostics methods.
Tests of reliability elements.
Tests of reliability equipments.

Exercise in computer lab

20 hours, compulsory

Teacher / Lecturer


Mathematical software, using in reliability.
Statistics, utilisation of random variable distribution in reliability.
Quantile. Probability of failures, trouble-free operation, intensity of failures.
Reliability models.
Calculation of reliability characteristics of systems with expendable objects. (4 hours)
Calculation of reliability characteristics of systems with repaireble objects. (4 hours)

Laboratory exercise

6 hours, compulsory

Teacher / Lecturer


Electrical methods measurements of materials.
Structural methods measurements of materials.