Course detail

Fluid Power Modeling

FSI-MTMAcad. year: 2024/2025

The cours deals with the following topics: basic theory, notions and definitions of mathematical modelling of fluid power systems and displacement pumps. It gives an overview of the main simulation tools as well as electro-hydraulic analogy. Energy transfer, efficiency and characteristics are emphasised in the part concerning the displacement pumps.
Seminars include computer simulation and examples from the research applicable in industrial practice.

Language of instruction

Czech

Number of ECTS credits

4

Mode of study

Not applicable.

Guarantor

prof. Ing. František Pochylý, CSc.

Department

Energy Institute (EÚ)

Entry knowledge

Necessary knowledge: differential and integral calculus, hydrostatics and hydrodynamics, gas mechanics, numerical mathematics, computer programming.

Rules for evaluation and completion of the course

Course-unit credit is awarded on the following conditions - sufficient attendance and running knowledge of the subject-matter.
Examination requirements - course-unit credit, knowledge of the subject-matter and and ability to apply it to the given examples. The exam has a written and an oral part.
Attendance at seminars is checked and possible (limited) absence may be compensated for via additional tasks.

Aims

The aim of the course is to provide students with an ability to create mathematical and simulation models of fluid power system elements, as well as models of basic circuits of these mechanisms. Another goal is for students - to be able to predict behaviour of those systems in the design stage already.
Students will be able to analyse and create a mathematical model of the fluid power system element behaviour or a model of the mechanism as a whole. They will also be able to simulate this behaviour by means of a computer.

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

AKERS, Arthur, Max GASSMAN a Richard John SMITH. Hydraulic power system analysis. Boca Raton, FL: CRC Press, 2006. ISBN 978-0824799564. (EN)
NEPRAŽ, František, Josef NEVRLÝ, Václav PEŇÁZ a Karel TŘETINA. Modelování systémů s hydraulickými mechanismy. Brno: Bosch Rexroth, 2002. ISBN 80-214-2187-8.
NEVRLÝ, Josef. Modelování pneumatických systémů. Brno: Akademické nakladatelství CERM, 2003. ISBN 80-720-4300-5.
WATTON, John. Fundamentals of fluid power control. New York: Cambridge University Press, 2009. ISBN 05-217-6250-2. (EN)

Recommended reading

AKERS, Arthur, Max GASSMAN a Richard John SMITH. Hydraulic power system analysis. Boca Raton, FL: CRC Press, 2006. ISBN 978-0824799564. (EN)
NEPRAŽ, František, Josef NEVRLÝ, Václav PEŇÁZ a Karel TŘETINA. Modelování systémů s hydraulickými mechanismy. Brno: Bosch Rexroth, 2002. ISBN 80-214-2187-8.
NEVRLÝ, Josef. Modelování pneumatických systémů. Brno: Akademické nakladatelství CERM, 2003. ISBN 80-720-4300-5.
WATTON, John. Fundamentals of fluid power control. New York: Cambridge University Press, 2009. ISBN 05-217-6250-2. (EN)

Classification of course in study plans

  • Programme N-ETI-P Master's

    specialization FLI , 2 year of study, summer semester, compulsory

  • Programme C-AKR-P Lifelong learning

    specialization CLS , 1 year of study, summer semester, elective

Type of course unit

 

Lecture

13 hod., optionally

Teacher / Lecturer

prof. Ing. František Pochylý, CSc.

Syllabus

1. Hydraulic mechanisms modelling - basic concepts and definitions
2. Non-linearities, specific problems
3. Elementary hydrostatic elements modelling
4. Real hydrostatic elements modelling
5. Hydrostatic circuits modelling
6. Simulation programs, DYNAST, MATLAB
7. Simulation programs applications
8. Modelling of pulsations in hydrostatic mechanisms
9. Pneumatic mechanisms modelling - basic concepts
10. Laws of air flowing through tubing
11. Pneumatic mechanisms stationary and dynamic states modelling
12. Basic types of volume pumps
13. Modelling of hydraulic conditions for volume pumps

Laboratory exercise

13 hod., compulsory

Teacher / Lecturer

prof. Ing. František Pochylý, CSc.

Syllabus

1. Resistance against motion computations.
2. Resistance against acceleration computations.
3. Resistance against deformation computations.
4. Pipeline modelling.
5. Valves modelling.
6. Examples solved by means of simulation programs.
7. Analytic computation of hydraulic mechanism acceleration and deceleration.
8. Computer simulation of hydraulic mechanism acceleration and deceleration.
9. Laboratory verification of the computer simulation of hydraulic mechanism acceleration and deceleration.
10. Pneumatic computations of a pneumatic system elements.
11. Use of a computer program for a pneumatic mechanism animation.
12. Computations of volume pumps basic types.
13. Computation of pressure and flow relations in a system equipped with a piston pump.