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Proceedings of International Conference of Hydraulics, Pneumatics, Tools, Sealing Elements, Fine Mechanics, Specific Electronic Equipment & Mechatronics Hervex 2012 20th Edition PROCEEDINGS OF INTERNATIONAL CONFERENCE OF HYDRAULICS, PNEUMATICS, TOOLS, SEALING ELEMENTS, FINE MECHANICS, SPECIFIC ELECTRONIC EQUIPMENT & MECHATRONICS HERVEX 2012 PARTNERS Magazine of HYDRAULICS, PNEUMATICS, TRIBOLOGY, ECOLOGY, SENSORICS, MECHATRONICS ISSN 1454 - 8003 Proceedings of 2012 International Conference of Hydraulics and Pneumatics - HERVEX 7 - 9 November, Calimanesti-Caciulata, Romania COMMITTEES HONORARY COMMITTEE Etienne PIOT – President of European Fluid Power Committee - CETOP John SAVAGE – Vice President CETOP – Education / BFPA Chairman Education and Training, England Henryk CHROSTOWSKI - Wroclaw University of Technology, POLAND Hubertus MURRENHOFF - Institute for Fluid Power Drives and Controls at Aachen University , GERMANY ORGANIZING COMMITTEE COORDINATED BY Dipl.Eng. Gheorghe RIZOIU - General Manager of Chamber of Commerce and Industry Valcea, Romania Dr. Ing. Corneliu CRISTESCU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania Assoc.Prof. PhD.Eng. Erol MURAD - “POLITEHNICA” University of Bucharest, Romania Prof. PhD. Eng. Dan OPRUTA – Technical University of Cluj, Romania Assoc.Prof. PhD.Eng. Constantin CHIRITA - Technical University “Gheorghe Asachi”- Iasi, Romania Prof. PhD. Eng. Ilare BORDEAŞU - Politehnica University from Timisoara, Romania PhD. Eng. Elmar DORGELOH – Manager of Development and Assessment Institute in Waste Water Technology at RWTH Aachen University, Germany PhD. Eng. Krzysztof KEDZIA - Wroclaw University of Technology, POLAND MEMBERS PhD.Eng. Mohamed HAJJAM – University of Poitiers - IUT Angouléme France Prof. PhD.Eng. Nicolae ALEXANDRESCU - “POLITEHNICA” University of Bucharest, Romania Eng. Ionel ANDREI - Romanian Ministry of Education, Research and Innovation Assoc.Prof. PhD.Eng. Constantin RANEA - General Secretary - National Authority for Scientific Research from Romania (NASR) Dipl.Eng. Radu ALEXANDRU - FESTO S.R.L. Prof. PhD.Eng. Valeriu BANU - S.M.C. Romania PhD.Eng. Zygmunt DOMAGALA – Wroclaw University of Technology, POLAND 6 ISSN 1454 - 8003 Proceedings of 2012 International Conference of Hydraulics and Pneumatics - HERVEX 7 - 9 November, Calimanesti-Caciulata, Romania PhD.Eng. Amadio BOLTZANI - ASSOFLUID – Italy PhD.Eng. Gabriela MATACHE - Hydraulics and Pneumatics Research Institute in Bucharest, Romania Dipl.Eng. Marius BURLANESCU - S.C. HERVIL Ramnicu Valcea, Romania Prof. PhD.Eng. Doru CALARASU - Technical University “Gheorghe Asachi”- Iasi, Romania Dipl.Eng. Ioan CAMPEAN - S.C. HIDROSIB S.A. Sibiu, Romania PhD.Eng. Tudor CRACIUNOIU - S.C. ICTCM S.A. Bucharest, Romania Dipl.Eng. Mircea DANCIU - PARKER HANNIFIN Corporation Romania Prof. PhD.Eng. Gheorghe GHEORGHE - General Manager - National Institute of Research and Development in Mechatronics and Measurement Technique (INCDMTM), Bucharest, Romania Prof. PhD.Eng. Vasile JAVGUREANU - Technical University of Chisinau Moldova PhD.Eng. Ioan LEPADATU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania Dipl.Eng. Leopold LUPUSANSCHI- S.C. CEROB S.R.L. Bucharest, Romania Prof. PhD.Eng. Pavel MACH – Technical University of Praga, Czech PhD.Eng. Daniel MARIN- S.C. General Fluid S.A. Bucharest, Romania PhD.Eng. Adrian MIREA – SC ROMFLUID SA, Bucharest, Romania Dipl.Eng. Ioan MOLDOVEANU - Festo S.R.L.,Bucharest, Romania PhD.Eng. Andrei Drumea - “POLITEHNICA” University of Bucharest, Romania Prof. PhD.Eng. Johann NICOLICI - Technical University of Viena, Austria Dipl.Eng. Cristian Sen - SUSZI - INDUSTRIAL SRL Constanta, Romania Prof. PhD.Eng. Petru PATRUT - Technical University of Civil Engineering of Bucharest, Romania PhD.Eng. Ion PIRNA - General Manager - National Institute Of Research - Development for Machines and Installations Designed to Agriculture and Food Industry – INMA, Bucharest- Romania PhD.Eng. Mircea PRICOP- S.C. HESPER S.A. Bucharest- Romania Dipl.Eng. Petru BREAZ - HIDRAULICA U.M. PLOPENI – Plopeni, Romania Prof. PhD.Eng. Liviu VAIDA - Technical University of Cluj, Romania Prof. PhD.Eng. Nicolae VASILIU - “POLITEHNICA” University of Bucharest, Romania Dipl.Eng. Nicolae TASU - HANSA FLEX Romania Prof.PhD.Eng. Paul SVASTA - “POLITEHNICA” University of Bucharest, Romania Phd.Eng. Catalin DUMITRESCU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania Prof. PhD.Eng. Kallita WLODZIMIERZ – Faculty of Rezjow – Poland Assoc.Prof.PhD. Marian KRÁLIK - University of Technology in Bratislava - Slovakia 7 ISSN 1454 - 8003 Proceedings of 2012 International Conference of Hydraulics and Pneumatics - HERVEX 7 - 9 November, Calimanesti-Caciulata, Romania EXECUTIVE COMMITTEE Dipl.Eng. Valentin CISMARU - President of Chamber of Commerce and Industry Valcea, Romania PhD.Eng. Petrin DRUMEA – Manager - Hydraulics and Pneumatics Research Institute in Bucharest, Romania PhD. Eng. Elmar DORGELOH – Manager of Development and Assessment Institute in Waste Water Technology at RWTH Aachen University, Germany Assoc.Prof. PhD.Eng. Constantin CHIRITA - Technical University “Gheorghe Asachi”- Iasi, Romania Prof. PhD.Eng. Alexandru MARIN – “POLITEHNICA” University of Bucharest, Romania PhD.Eng. Adrian MIREA – General Secretary – Association FLUIDAS, Bucharest - Romania Dipl.Eng. Gheorghe RIZOIU - General Manager of Chamber of Commerce and Industry Valcea, Romania PhD.Eng. Corneliu CRISTESCU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania PhD.Eng. Zygmunt DOMAGALA - Wroclaw University of Technology, Poland Prof. PhD. Eng. Liviu VAIDA – Technical University of Cluj Napoca, Romania PhD. Eng. Gabriela MATACHE - Hydraulics and Pneumatics Research Institute in Bucharest, Romania SECRETARY Valentin MIROIU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania PhD.Eng. Iulian DUTU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania Lorena MATEESCU - Chamber of Commerce and Industry Valcea, Romania EXCHIBITION ORGANIZING COMMITTEE Lorena MATEESCU - Chamber of Commerce and Industry Valcea, Romania PhD.Eng. Ioan LEPADATU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania SPECIALIZED REVIEWER COMMITTEE PhD.Eng. Heinrich Theissen - Institute for Fluid Power Drives and Controls, Aachen University - Germania PhD.Eng. Petrin DRUMEA - Manager - Hydraulics and Pneumatics Research Institute in Bucharest, Romania Assoc.Prof. PhD.Eng. Constantin RANEA - General Secretary - National Authority for Scientific Research from Romania (NASR) Prof. PhD.Eng. Nicolae ALEXANDRESCU - Politehnica University of Bucharest, Romania Prof. PhD.Eng. Paul SVASTA - Politehnica“POLITEHNICA” of Bucharest, Romania 8 ISSN 1454 - 8003 Proceedings of 2012 International Conference of Hydraulics and Pneumatics - HERVEX 7 - 9 November, Calimanesti-Caciulata, Romania PhD. Eng. Costinel POPESCU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania PhD. Eng. Krzysztof KEDZIA - Wroclaw University of Technology, Poland PhD.Eng. Mohamed HAJJAM - University of Poitiers - IUT Angouléme, France Prof. PhD.Eng. Vasile JAVGUREANU - Technical University of Chisinau, Moldova Prof. PhD.Eng. Pavel MACH - Technical University of Praga, Czech Prof. PhD.Eng. Johann NICOLICS - Technical University of Viena, Austria MANAGER OF PUBLICATION - PhD.Eng. Petrin DRUMEA - Manager - Hydraulics and Pneumatics Research Institute in Bucharest, Romania EDITORIAL STAFF Chief Editor - PhD. Eng. Gabriela MATACHE - Hydraulics and Pneumatics Research Institute in Bucharest, Romania Executive Editors - Ana-Maria POPESCU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania - Valentin MIROIU - Hydraulics and Pneumatics Research Institute in Bucharest, Romania 9 ISSN 1454 – 8003 Proceedings of 2012 International Conference of Hydraulics and Pneumatics - HERVEX 7 - 9 November, Calimanesti-Caciulata, Romania CONTENTS SECTION I: INDUSTRIAL HYDRAULICS AND MECHATRONICS • MODERN TRENDS OF SUSTAINABILITY RELATED RESEARCH IN FLUID POWER Hubertus Murrenhoff – Executive Director of Institute for Fluid Power Drives and Controls – IFAS, Aachen, GERMANY 15 - 55 • HYDRAULIC SWITCHING CONTROL – OBJECTIVES, CONCEPTS, CHALLENGES AND POTENTIAL APPLICATIONS Rudolf Scheidl, Helmut Kogler, Bernd Winkler- Institute of Machine Design and Hydraulic Drives, AUSTRIA 56 - 67 • MAINTENANCE OF FLUID POWER EQUIPMENTS Corneliu Cristescu, Krzysztof Kedzia, Catalin Dumitrescu, Radu Radoi - Hydraulics and Pneumatics Research Institute in Bucharest, ROMANIA / Wroclaw University of Technology, POLAND 68 - 76 • SOME ASPECTS OF THE NEW MODEL OF ROBOT ACTUATION – MERO Ion Ion, Alexandru Marin, Laura-Florenta Boanta, Cristian Simion, Cornel Dinu – “POLITEHNICA” University of Bucharest, ROMANIA 77 - 86 • REHABILITATION AND TESTING OF AXIAL PISTON AND ADJUSTABLE FLOW HIGH-WEAR PUMPS Petrica Krevey, Radu Sauciuc, Genoveva Vranceanu - Hydraulics and Pneumatics Research Institute in Bucharest, ROMANIA 87 – 93 • THE VISION-BASED MECHATRONIC SYSTEMS USED IN PRODUCTION QUALITY CONTROL OF HYDRAULIC COMPONENTS Anca Atanasescu, Sorin Sorea, Alexandru Constantinescu – National Institute of Research and Development in Mechatronics and Measurement Technique in Bucharest-ROMANIA 94 – 102 • NUMERICAL SIMULATION OF THE SERVO MECHANISM FOR ADJUSTING THE CAPACITY OF THE RADIAL PISTON PUMPS Cătălin Dumitrescu, Liliana Dumitrescu, Ioan lepădatu - Hydraulics and Pneumatics Research Institute in Bucharest, ROMANIA 103 – 108 • DESIGN AND DEVELOPMENT OF MECHATRONIC SYSTEM WITH TELEMONITORING AND PREDICTIVE TELEMAINTENANCE CONTROL Anghel Constantin , Sergiu Dumitru - National Institute of Research and Development in Mechatronics and
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