338-0904/03 – Hydraulic Elements and Systems (HPaS)
| Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 10 |
| Subject guarantor | doc. Dr. Ing. Lumír Hružík | Subject version guarantor | doc. Ing. Martin Vašina, Ph.D. |
| Study level | postgraduate | Requirement | Choice-compulsory |
| Year | | Semester | winter + summer |
| | Study language | English |
| Year of introduction | 2015/2016 | Year of cancellation | |
| Intended for the faculties | FS | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
Extension of knowledge of structure, properties, mathematical description of static and dynamic properties of hydraulic components.
Learn the modern methods of analysis and synthesis of hydrostatic systems.
Assume knowledge of control problematics of hydrostatic systems.
Teaching methods
Lectures
Individual consultations
Project work
Summary
The student will deepen its knowledge in the subject Hydraulic components and systems, i.e. knowledge of structure, functions, properties, energy balance, control manner and application of hydrostatic components, i.e. hydraulic pumps, hydraulic motors, control valves and accessories of hydraulic systems. He will obtain knowledge of working fluids of hydraulic systems. Based on the knowledge of hydraulic components, he will deal with analysis and synthesis of selected hydraulic systems, e.g. with hydrostatic systems with proportional control valves, accumulators, slip-in cartridge valves, energy saving systems etc. He will use modern methods of a mathematical description of dynamic behaviour of hydraulic components and systems, such as a description of transfer functions etc. He will use methods of mathematical simulation and computer simulation of dynamic systems during synthesis of hydraulic and electrohydraulic systems.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
individual consultations
E-learning
Other requirements
Additional requirements for students are not .
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1st Hydrostatic transmitters
1.1 The distribution, basic parameters of transmitters
1.2 Energy balance, hydrostatic force transducers
1.3 Static characteristics of pumps, hydraulic motors
1.4 Dynamics of hydrostatic transducer
1.5 Construction converters
1.5.1. Rotary:
gear, screw, vane, radial piston, piston axial, eccentric
1.5.2. Swinging motors
1.5.3. Linear motors
1.6 Management hydrostatic transducer
1.6.1. Direct control of the geometric volume
1.6.2. Mechanical-hydraulic control at constant pressure, constant flow,
constant power. Load-Sensing Systems
1.6.3. Electrohydraulic control with proportional valves and servo valves
1.7 The course of passive resistance motors, stick-slip, minimal restrictions
Speed
2nd Control elements
2.1 Switchboards seat, plunger, valve. Built-in valves
2.2 One-way valves, controlled one-way valves, bilateral
hydraulic lock
2.3 Elements of flow control: Aperture, nozzles, flow control valves, butterfly
valves with two-way and three-way pressure weight, brake valves
2.4 Proportional valve
2.5 Servo
2.6 Components for pressure control: insurance, relief, weight loss, connection and
isolating valves. Controlled directly and indirectly controlled pressure valves
3rd Accessories hydraulic systems
3.1 Hydraulic accumulators
3.2 Filters and filtration of liquids
3.3 Seals in hydraulic systems
3.4 Tanks
3.5 Heaters, coolers
3.6 Management of liquid
4th The working fluid of hydraulic systems
4.1 Physical properties
4.2 Chemical properties
4.3 Ecological properties
4.4 Types of fluids used, the classification
5th Hydrostatic Systems
5.1 Control of the hydrostatic drive
5.1.1. Control speed (rpm) Engine: - volume control
- valve control
5.1.2. Control of power, torque
5.2 Energy-saving hydrostatic systems
5.2.1. Energy-efficient sources of pressure
5.2.2. Load-sensing systems with an open center and closed center
5.2.3. Secondary control motors
5.2.4 Systems with energy recovery pressure
5.3 Hydrostatic systems with batteries
5.4 Hydrostatic systems with built-in valves
5.5 Hydrostatic systems with proportional valves
5.6 Compensation pressure load weights
5.7 Hydrostatic transmissions
5.8 Hydrostatic systems with two or more motors. Synchronous operation
motors
5.9 Servo-mechanisms
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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