HomeUndergraduate and post graduate educational programs Educational program Дисциплина

Engineering System Reliability

Grigoryeva Svetlana Vladimirovna

Description: The discipline "Reliability of technical systems" refers to the major disciplines of the component of choice. The subject of the discipline is modern methods for calculating the reliability of automated control systems. The following sections are considered - the basic concepts and definitions of the theory of reliability of technical systems; quantitative characteristics of reliability, mathematical models in the theory of reliability of technical systems, laws of distribution of discrete random variables.

Amount of credits: 5

Пререквизиты:

Physics 2

Course Workload:

Types of classes	hours
Lectures	15
Practical works	30
Laboratory works
SAWTG (Student Autonomous Work under Teacher Guidance)	30
SAW (Student autonomous work)	75
Form of final control	Exam
Final assessment method	written exam

Component: Component by selection

Cycle: Profiling disciplines

Goal

to form in students a system of scientific knowledge and general professional skills necessary for analysis, evaluation and ensuring the reliability and performance of complex technical systems that are objects of engineering and management activities of the future specialist.

Objective

mastering a systems approach to analyzing the operation of complex systems: learning the relationship between the concepts of quality, performance and reliability;
studying methods for assessing the performance and reliability of products and complex technical systems;
understanding methods for managing reliability and performance during operation;
acquiring skills in analyzing and calculating reliability indicators for technical systems;
applying methods for synthesizing systems with a given reliability when designing automated control systems.

Learning outcome: knowledge and understanding

name the terms and definitions of reliability theory, general patterns of failure and restoration of technical systems, as well as factors affecting the reliability of technical systems, and methods for taking them into account in design and operation;
describe the methods of reliability assessment and analysis, including mathematical models and probabilistic methods;

Learning outcome: applying knowledge and understanding

calculate reliability indicators (probability of failure-free operation, mean time between failures, failure rate) for simple and complex systems, using the acquired knowledge of the mathematical apparatus;
select appropriate methods of redundancy, duplication, diagnostics, preventive maintenance and other measures, justifying their choice and applying them in practice;
analyze data on equipment reliability, use this information to make decisions on equipment replacement, optimization of operating modes, and selection of suppliers;

Learning outcome: formation of judgments

reasonably assess the impact of various factors (design, technological, operational, human factor) on the reliability of a specific technical system;
justify the choice of specific methods of ensuring reliability (redundancy, duplication, preventive maintenance, monitoring and diagnostics) based on the analysis of system characteristics and requirements for its reliability;

Learning outcome: communicative abilities

formulate technical requirements for reliability, explain complex reliability concepts in simple language, present the results of reliability analyses and calculations in an understandable form;
express your opinion, defend your point of view in a reasoned manner, listen to and understand the opinions of others, participate in discussions on the selection of reliability assurance strategies;

Learning outcome: learning skills or learning abilities

find and analyze current scientific and technical literature, standards, regulatory documents related to reliability, extract the necessary information from them;
apply modern methods for the development of reliable and environmentally friendly technical systems that ensure the safety of human life and their protection from the possible consequences of accidents, catastrophes and natural disasters.

Teaching methods

interactive lecture (use of the following active forms of learning: guided (controlled) discussion or conversation; moderation; slide show; motivational speech);

building scenarios for the development of various situations based on given conditions;

information and communication (classes in a computer lab using professional software packages);

search and research (independent research activities of students during the learning process);

problem-oriented (solving practical problems).

Assessment of the student's knowledge

Teacher oversees various tasks related to ongoing assessment and determines students' current performance twice during each academic period. Ratings 1 and 2 are formulated based on the outcomes of this ongoing assessment. The student's learning achievements are assessed using a 100-point scale, and the final grades P1 and P2 are calculated as the average of their ongoing performance evaluations. The teacher evaluates the student's work throughout the academic period in alignment with the assignment submission schedule for the discipline. The assessment system may incorporate a mix of written and oral, group and individual formats.

Period	Type of task	Total
1 rating	Practical task 1. Calculation of statistical characteristics of failure-free operation of non-recoverable systems based on test results.	0-100
	Practical task 2. Calculation of statistical indicators of reliability of restored systems based on the results of tests and controlled operation.
	Practical task 3. Calculation of reliability indicators of devices with a known pattern of failure times.
	Practical task 4. Determination of the law of distribution of failure times based on the results of tests or controlled operation.
	Practical task 5. Calculation of reliability indicators of devices based on the reliability characteristics of individual elements.
	Practical task 6. Coefficient method for taking into account the influence of external factors on the reliability of devices.
	Calculation and graphic work 1. Statistical assessments of reliability characteristics of a technical system.
	Calculation and graphic work 2. Identification of the laws of distribution of failure-free operation time.
	Calculation and graphic work 3. The influence of mechanical, climatic conditions, electrical loads on the reliability of the system devices
	Border control 1
2 rating	Practical task 7. Structural and logical analysis of technical systems.	0-100
	Practical task 8. Calculations of structural reliability of systems.
	Practical task 9. Construction of calculation and logical schemes of redundant systems.
	Practical task 10. Calculation of system reliability with different types of redundancy and methods of connecting the reserve using the "convolution" method
	Calculation and graphic work 4. Structural and logical analysis of a technical system for reliability assessment
	Calculation and graphic work 5. Analysis of the efficiency of redundancy.
	Border control 2
Total control	Exam	0-100

The evaluating policy of learning outcomes by work type

Type of task	90-100	70-89	50-69	0-49
Type of task	Excellent	Good	Satisfactory	Unsatisfactory
Work in practical classes	Completed the work in full, observing the required sequence of actions; the report is prepared in accordance with the requirements; correctly performs the analysis of errors. When answering questions, correctly understands the essence of the question, gives an accurate definition and interpretation of the main concepts; accompanies the answer with new examples, knows how to apply knowledge in a new situation; can establish a connection between the material being studied and previously studied material, as well as with material learned while studying other disciplines.	Completed the work according to the requirement for a grade of "5", but 2-3 shortcomings were made. The student's answer to the questions satisfies the basic requirements for an answer of 5, but was given without applying knowledge in a new situation, without using connections with previously studied material and material learned in studying other disciplines; one mistake or no more than two shortcomings were made, the student can correct them independently or with a little help from the teacher.	The work was not completed in full, but not less than 50% of the volume, which allows obtaining correct results and conclusions; errors were made during the work. When answering questions, the student correctly understands the essence of the question, but the answer contains individual problems in assimilation of the course questions that do not interfere with further assimilation of the program material; no more than one gross error and two shortcomings were made.	Completed the work in full, observing the required sequence of actions; the report is prepared in accordance with the requirements; correctly performs the analysis of errors. When answering questions, correctly understands the essence of the question, gives an accurate definition and interpretation of the main concepts; accompanies the answer with new examples, knows how to apply knowledge in a new situation; can establish a connection between the material being studied and previously studied material, as well as with material learned while studying other disciplines.
Interview on control questions	Demonstrates systematic theoretical knowledge, is proficient in terminology, logically and consistently explains the essence of phenomena and processes, makes reasoned conclusions and generalizations, gives examples, demonstrates fluency in monologue speech and the ability to quickly respond to clarifying questions.	Demonstrates solid theoretical knowledge, is proficient in terminology, logically and consistently explains the essence of phenomena and processes, makes reasoned conclusions and generalizations, gives examples, demonstrates fluency in monologue speech, but makes minor mistakes that are corrected independently or with minor correction by the teacher.	Demonstrates shallow theoretical knowledge, shows poorly developed skills in analyzing phenomena and processes, insufficient ability to make reasoned conclusions and give examples, demonstrates insufficient fluency in monologue speech, terminology, logicality and consistency of presentation, makes mistakes that can be corrected only with correction by the teacher.	Demonstrates systematic theoretical knowledge, is proficient in terminology, logically and consistently explains the essence of phenomena and processes, makes reasoned conclusions and generalizations, gives examples, demonstrates fluency in monologue speech and the ability to quickly respond to clarifying questions.
Boundary control	Milestone test: 18-20 points – knowledge at a high level is demonstrated.	Midterm test: 14-17 points – knowledge demonstrated at a basic level.	Midterm test: 13-10 points – knowledge demonstrated at a satisfactory level.	Milestone test: 18-20 points – knowledge at a high level is demonstrated.

Evaluation form

The student's final grade in the course is calculated on a 100 point grading scale, it includes:

40% of the examination result;
60% of current control result.

The final grade is calculated by the formula:

FG = 0,6	MT₁+MT₂	+0,4E
	2

Where Midterm 1, Midterm 2are digital equivalents of the grades of Midterm 1 and 2;

E is a digital equivalent of the exam grade.

Final alphabetical grade and its equivalent in points:

The letter grading system for students' academic achievements, corresponding to the numerical equivalent on a four-point scale:

Alphabetical grade	Numerical value	Points (%)	Traditional grade
A	4.0	95-100	Excellent
A-	3.67	90-94	Excellent
B+	3.33	85-89	Good
B	3.0	80-84
B-	2.67	75-79
C+	2.33	70-74
C	2.0	65-69	Satisfactory
C-	1.67	60-64
D+	1.33	55-59
D	1.0	50-54
FX	0.5	25-49	Unsatisfactory
F	0	0-24	Unsatisfactory

Topics of lectures

Vvedeniye
Qualitative criteria for the reliability of devices and control systems
Quantitative characteristics of the reliability of non-recoverable systems in terms of probability theory
Time model of failures of recoverable systems
Laws of distribution of random variables used in reliability theory
Prerequisites for selecting a reliability model for technical systems
Methods for increasing the reliability of technical systems
Increasing the reliability of devices and systems by introducing redundancy
Structural and logical analysis of reliability
Fundamentals of technical diagnostics
Reliability of automated control systems
Economic aspects of reliability
Standards and regulations in the field of reliability
Examples of reliability in applied problems
Current trends and prospects

Key reading

Shishmarev V.Yu. Nadezhnost' tekhnicheskih sistem : uchebnik dlya stud. vyssh. ucheb. zavedenij / V.Yu.Shishmarev. — M. : Izdatel'skij centr «Akademiya», 2010. — 304 s.
Kulagin A.V., Shirobokov S.V. Nadezhnost' tekhnicheskih sistem i tekhnogennyj risk: uchebno-metodicheskoe posobie. – Izhevsk: Izd. centr «Udmurtskij universitet», 2020. – 110s.
Lazuta I.V. Diagnostika i nadezhnost' avtomatizirovannyh sistem, konspekt lekcij, Omsk, SibADI, 2018. – 73s.
Lugovcova N.Yu. Nadezhnost' tekhnicheskih sistem i tekhnogennyj risk: metodicheskie ukazaniya k vypolneniyu prakticheskih rabot po kursu «Nadezhnost' tekhnicheskih sistem i tekhnogennyj risk» dlya studentov, obuchayushchihsya po napravleniyu 280700 «Tekhnosfernaya bezopasnost'» ochnoj formy obucheniya / N.Yu. Lugovcova; Yurginskij tekhnologicheskij institut. – Yurga: Tipografiya OOO «Mediasfera», 2015. – 94 s.

June 12, 2023 - National mourning day in the Republic of Kazakhstan