French Republic honored Professor Gruyitch Doctor Honoris Causa of the University of Lille I, for scientific and educational contributions to Systems Science and Control Theory (1984).

Association of Serbia for Systems, Automatic Control and Measurement honored Professor Gruyitch Distinguished and Honorary Member (1989).

The highest honor by the Faculty of Mechanical Engineering (FME), University of Belgrade, Serbia, 1997.


City of Belgrade and the First Belgrade High School (1958), Belgrade University (1960), and Slovenian industry "Iskra" (1971) honored Mr. Gruyitch with their prestigious academic awards.


Mr. Lyubomir T. Gruyitch is Certified Mechanical Engineer (Dipl. M. Eng.), Master of Electrical Engineering Sciences (M. E. E. Sc.), and Doctor of Engineering Sciences (D. Sc.) (All with the University of Belgrade, Serbia).


The main scientific and engineering contributions and interests by Dr. Lyubomir T. Gruyitch have been in the next areas:

° Dynamics and modeling of engineering systems including neural and fuzzy-neural networks.

° Linear and nonlinear control systems theory. Synthesis of robust, stabilizing and/or tracking control of technical plants.

° Stability theory of nonlinear dynamical systems with diverse applications.

° Time, physical principles, relativity theory, dynamical systems with multiple time scales and control.

° Trackability and tracking theory of linear and nonlinear control systems. Its applications to various technical plants.

Dr. Gruyitch was a leading contributor to the creation of the research Laboratory of Automatic Control, Mechatronics, Manufacturing Engineering and Systems Engineering of the National School of Engineers (Belfort, France), and a founder of the educational and research Laboratory of Automatic Control of the FME.

France * (retired May 1, 2007), South Africa (10 years contract), France (visiting), United States of America (visiting), Serbia *.


Dr. Gruyitch published 8 books, 4 textbooks, 11 lecture notes (in English, French or Serb), one manual of solved problems, one book translation from Russian, chapters in eight scientific books, 127 scientific papers in scientific journals, 170 conference research papers and two educational papers.


Professor Gruyitch supervised one doctorate at the University of Technology Belfort-Montbeliard - UTBM (France), which gained the highest grade by an international (French - USA) jury, five doctorates at the University of Belgrade (Serbia), four DEA (equivalent to M. Sc.) theses at the ENI and five master theses at the University of Belgrade.


Professor Gruyitch was a co-initiator of the proposal for a new tentative, highly advanced, Department of Automatique et Systémique at the UTBM, and the Coordinator of the team that worked out the full project. He was cofounder of the Cathedra of Automatic Control and of the undergraduate and graduate Group of Automatic Control of the FME. He introduced a number of new courses at the universities in France, South Africa and Serbia.


Professor Gruyitch was the principal investigator supervising several projects funded by industry in Serbia.


Professor Gruyitch was a member of the Acting Senate of the UTBM and the Coordinator of the Commission of Research of the UTBM. He was the Chief of the Cathedra of Automatic Control, the Chief of the Laboratory of Automatic Control and the President of the Senate of the Faculty of Mechanical Engineering, Belgrade.


Dr. Gruyitch gave invited university seminars in Belgium, Canada, England, France, Russia, Serbia, Tunis and USA.

Professor Gruyitch was invited plenary sessions speaker, Organizer and/or Chairman of invited sessions at the international conferences, and President of the International Program Committee of the IFAC - IFIP - IMACS Conference Control of Industrial Systems, Belfort, France (more than 300 participants from 42 countries with four continents).

For more details see: http://www.truth-science.info
Diplomed (Certified) Mechanical Engineer, Faculty of Mechanical Engineering, University of Belgrade, 1963. M. Sci., Faculty of Electrical Engineering, University of Belgrade, 1971, D. Sci., Faculty of Mechanical Engineering, University of Belgrade, 1972
Areas of Research / Professional Expertise
Dynamics and modelling of mechanical and thermal plants.
Stability of dynamic systems including large scale dynamic systems,  and singularly perturbed dynamic systems. Stabilizing control synthesis.
Neural and fuzzy-neural networks.
Tracking, trackability and tracking control synthesis.
Time, its consistent relativity theory and links with physical variables, dynamical systems and control.
Personal Interests
Social and academic life, state and society control, sports, art.