338-0506/02 – Hydraulic Mechanisms Control (Řízhy)

Gurantor departmentDepartment of Hydromechanics and Hydraulic EquipmentCredits4
Subject guarantordoc. Dr. Ing. Lumír HružíkSubject version guarantordoc. Dr. Ing. Lumír Hružík
Study levelundergraduate or graduateRequirementChoice-compulsory
Year1Semestersummer
Study languageCzech
Year of introduction2004/2005Year of cancellation
Intended for the facultiesFSIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
HRU38 doc. Dr. Ing. Lumír Hružík
PAV70 doc. Ing. Bohuslav Pavlok, CSc.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2
Combined Credit and Examination 10+4

Subject aims expressed by acquired skills and competences

Students are introduced to three qualitative degree of hydraulic control mechanisms: the classical technique of control, proportional control technology and servotechnology. Naučí and to distinguish two basic ways to control hydraulic mechanisms: control valve and volume control. They can analyze both ways especially in terms of precision driving, dynamic features, performance and energy prices. For proportional control performing a project management proposal system (synthesis) for a specific application. The servo lead same application for simpler cases.

Teaching methods

Lectures
Tutorials
Experimental work in labs
Project work

Summary

The subject of hydraulic control mechanisms, students learn about issue of volume management and control variable resistor, the dynamism controlled system with thermal balance of controlled hydrostatic drive and control technology applications in hydrostatic mechanisms. a detailed discussed proportional control technology and servo technology, which are used Basic knowledge of the subjects of fluid dynamics and automation mechanisms. The students will become familiar with the song speed and position servomechanisms. Also familiar with the principles of commissioning and maintenance of hydraulic proportional servo-valves and electrohydraulic components and issues hydraulic filtration equipment with servo valves and proportional valves.

Compulsory literature:

[1] EWALD, R. et al. Proportional and Servo-valve Technology. Lohr am Main, Germany: Bosch Rexroth AG, 2003. 300 p. [2] GÖTZ, W. Hydraulics. Theory and Applications. Ditzingen, Germany: OMEGON, 1998. 291 s. ISBN 3-980-5925-3-7.

Recommended literature:

[1] EXNER, H. et al. Basic Principles and Components of Fluid Technology. Lohr am Main, Germany: Rexroth AG., 1991. 344 p. ISBN 3-8023-0266-4. [2] HEHN, H. et al. Fluid Power Troubleshooting. New York : Marcel Dekker. 1995. 647 p. ISBN 0-8247-9275-0.

Way of continuous check of knowledge in the course of semester

2x Laboratorní měření. 2x Projekt. 1x Test.

E-learning

Další požadavky na studenta

There are no other requirements for student.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

The program of lectures Week Lectures 1 The definition of a control term. Hydraulic mechanisms control: controlled variables, methods of control - classification. Control by variable resistor, one-edge depending on the pressure gradient on engine. Sources of constant pressure. 2 Control by variable resistor, one-edge depending on the pressure gradient on engine. Throttling valves with two-way pressure weight. Throttling valves independent on viscosity. Throttling valves with a three-way pressure weight. 3 Volume control. 4 Control by variable resistor, two-edge. Introduction to proportional technology. Proportional electromagnets. 5 Direct-controlled proportional valve. Indirectly controlled proportional distributors. 6 Proportional pressure valves. Controlling electronics for proportional technology. 7 Design of circuit with a proportional valve with respect to system dynamics. 8 Proportional valve with two-way pressure weight and a three-way pressure weight . 9 Servotechnology. Regulatory circuit. Servomechanism- definition, types, typical signs, the general block diagram. 10 Servovalves. 11 Speed servomechanism. Positional servomechanism. Scanning of measured values in the regulatory circuit. 12 Dynamic behavior of regulatory circuit elements. Influence of servovalves dynamics on regulatory circuit. 13 Principles of installation, commissioning and maintenance of hydraulic proportional elements and electro-hydraulic servovalves. Filtration of hydraulic systems with servovalves and proportional valves. 14 Examples of devices with proportional elements and servovalves. Program of exercises and seminars + individual students' work Week Contents of exercises and seminars 1 Repetition of basic concepts of fluid machinery. 2 Control by variable resistance: the circuits with throttle valves. 3 Control by variable resistance: the circuits with throttle valves.. 4 Design of hydrostatic transducer with control of pump and hydraulic motor geometric volume. 5 Program 1: Design of a circuit with a proportional valve. 6 Design of a circuit with a proportional valve - completion. 7 Program 2: Measuring of the hydrostatic drive dynamics with proportional valve. 8 Measuring of the hydrostatic drive dynamics with proportional valve - completion. 9 Program 3: Proposal of a rotary servodrive. 10 Measurement of rotary servodrive - completion. 11 Dynamic behavior of regulatory circuit elements. 12 Mathematical and physical models of the regulatory circuit elements. 13 Test 1. 14 Credits. Exam questions: 1 Control by variable resistor, one-edge: principles of management, static Mn and Fv drive characteristics. Throttling valves depending on the pressure gradient. 2 Location of throttle valve at the inlet and outlet of hydraulic motor. Energy balance of drive controlled by variable resistor. 3 Throttling valves with two-way pressure weight. 4 Throttling valves with a three-way pressure weight. 5 Volume control of drive. 6 Implementation of a constant pressure source. Four-edge control valve. 7 Proportional valve directly controlled. 8 Proportional valve indirectly controlled. 9 Proportional pressure valves. 10 Proportional valve with two-way and three-way pressure weight. 11 Design of a proportional valve with respect to the dynamics of the system. 12 Controlling electronics for proportional technology. 13 Servomechanisms: definitions, types, characteristic features, a general block diagram. 14 Servovalves. 15 Sped servomechanism. Positional servomechanism. 16 Scanning of measured values in the regulatory circuit. 17 Influence of the dynamics of servovalves on the regulatory circuit. 18 The dynamic behavior of the regulatory circuit elements. 19 Principles of installation, commissioning and maintenance of hydraulic proportional elements and electro-hydraulic servovalves. 20 Hydraulic filtration equipment with servo valves and proportional valves.

Conditions for subject completion

Combined form (validity from: 1960/1961 Summer semester, validity until: 2010/2011 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (145) 51
        Examination Examination 100  0
        Exercises evaluation Credit 45  0
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
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2010/2011 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
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2009/2010 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
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2008/2009 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2008/2009 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2008/2009 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2008/2009 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment K Czech Ostrava 1 Choice-compulsory study plan
2008/2009 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2007/2008 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2007/2008 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2007/2008 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2007/2008 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment K Czech Ostrava 1 Choice-compulsory study plan
2007/2008 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2006/2007 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2006/2007 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2006/2007 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance P Czech Ostrava 1 Choice-compulsory study plan
2006/2007 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment K Czech Ostrava 1 Choice-compulsory study plan
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2005/2006 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2005/2006 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
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2005/2006 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment K Czech Ostrava 1 Choice-compulsory study plan
2005/2006 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment K Czech Ostrava 1 Choice-compulsory study plan
2005/2006 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (72) Technical Diagnostics, Repairs and Maintenance K Czech Ostrava 1 Choice-compulsory study plan
2004/2005 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
2004/2005 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment P Czech Ostrava 1 Choice-compulsory study plan
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2004/2005 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (20) Production Machines and Equipment K Czech Ostrava 1 Choice-compulsory study plan
2004/2005 (N2301) Mechanical Engineering (3909T001) Design and Process Engineering (40) Design of Machines and Equipment K Czech Ostrava 1 Choice-compulsory study plan
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Occurrence in special blocks

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