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Plenary Lecture

Aspects on Compact Electrical Drive Systems


Professor Nicolae Jula
Faculty of Military Electronic and Information Systems
Military Technical Academy Bucharest
81-83, George Cosbuc Bv, Sector 5, Bucharest
Romania
E-mail: nicolae.jula@gmail.com


Abstract: The paper presents some aspects on actual directions regarding electrical drive systems field. The necessity to developing compact drive systems and the present world economical situation determine the manufacturers to concept special integrate drive systems, where there are at least three fundamental requirements: minimal specific weight (kg/W), high reliability, low manufacturing costs. The analyzed integrated system includes: electrical servomotor, speed transducer, position transducer, electro-magnetical brake, mechanical gear, control and power electronic. Each from the above system components has original elements, as follows:
-a brushless servomotor having a fractional number of slots per magnetic pole
-a speed transducer, where the output is processed linear trough digital methods
-no conventional solutions to develop very compact brake systems, as well as mechanical gear
-vectorial analysis for the control system.

Brief Biography of the Speaker: Nicolae Jula was born on December 14th, 1945 in Hunedoara County, Romania. He received the degree in electrical engineering in 1969 from Bucharest Polytechnic Institute and Ph.D. in 1986. During 1969 1978, he was scientific researcher at National Institute for Aerospace Research, Bucharest and he participated at the international project for research, design and production of the military aircraft YUROM versions IAR 93 and ORAO 2. He was in charge with development of electrical installations, special installations and board equipment for the military aircraft. Since 1978, he is working within Military Technical Academy Bucharest and currently he is Professor of Measurement Systems at the Faculty of Military Electronic and Information Systems. His present research interest includes sensor interface systems, analogue circuit design, signal processing, transducers and electrical servomotors, measurement theory and low frequency measurements. He has published more 180 technical papers and 20 books and he was involved in numerous national research projects out o which he had Project Coordination responsibilities in 10 projects. The national projects were developed on the following programms: AEROSPATIAL, SECURITATE, CALIST, RELANSIN and CEEX. Out of the international contracts in which I am involved I would like to mention FP7 - CEARES project which will be finished in 2010. The main objective of the project is to enhance regional cooperation in aeronautical research and development amoung different universities and research centers from the Central European region involving: Austria, Bulgaria, Czech Republic, Estonia, Herzegovina, Latvia, Lithuania, Poland, Romania, Serbia, Slovakia and Hungary. I am member of the Aero-Austronautics Committee from the Technical Division of the Romanian Academy since 2002. I am Vicepresident of the Academy of Cybernetics "Stefan Odobreja" founded in 1982 and registered in Swisserland in Lugano.

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