Vol.2, No 8, 1998 pp. 823 - 824
26TH SCIENTIFIC-TECHNICAL MEETING "HIPNEF
Dragutin Knežević, Svetislav Zarić
Mechanical and Electrotechnical Engineers and Techniciang Society of
Serbia (SMEITS), Belgrade
Engineering and technical society of Serbia in Belgrade was cite where
the 26th scientific-technical meeting "HIPNEF '98" was held, on October
28-30, 1998. The Ministry of science and technology of Serbia was a patron,while
the sponsorship of the meeting was given by companies "eXpert" - Požarevac
and "Vedus" - Sombor.The meeting organizer was Mechanical and Electrotechnical
engineers and technicians Society of Serbia (SMEITS). This traditional
meeting cover the areas of oil hydraulics, informatics, pneumatics, new
technologies, electrotechnics, electronics and fluids.
The recognized experts have presented their papers which cover the
theory, research, development and applications in the areas mentioned above.
The papers were presented plenary. Total of 44 papers were presented which
mostly present the state of the art in the scientific and technical areas
covered by "HIPNEF". All the papers are printed in one volume proceedings
which are distributed to the participants.
Three invited lectures were given by the eminent scientists. The following
areas were treated:
- hydromechanical hereditary systems modelling (Katica (Stevanović)
- active systems in engineering (academician Miomir Vukobratović) and
- quality and quality systems (Vidosav Majstorović and Milan Rakić).
All three invited lectures were followed by great interest and discussion
took place after.
The papers in the area of OIL HYDRAULICS covered the different problems
such as the control of operating modes of fan by means of hydrodynamic
junction, the running time calculation of hydrodynamic junction driven
by electric motor, hydraulic presses and their imrovement, the universal
spreader elecrohydraulic system, the control of hydrodynamical power transmission,
the control of load limitsand the development of hydrostatic traction drives
for wheeled machines.
The papers in the area of PNEUMATICS treated the pneumatic control
of scoliotic board, electropneumatic pressure controller, the mathematical
modelling of pressure controller, the special purpose pneumatic valves,
two-hand safety press activation and its problems, intelligent robot control
and the diagnostics of pneumatic systems.
Just one paper was presented in the area of INFORMATICS, which covered
the Internet accessible data bases on electro, pneumo and hydraulic systems.
In the area of NEW TECHNOLOGIES the problem of laser cutting machines
was trated out.
A novel rotary acceleration sensor was presented in the area of ELECTRONICS,
as well as the solution of the intelligent positioner.
In the FLUID session,the problems of boundary layer theory were presented,
pump cavitation as well as the wave propagation in two-phase flow.
The AUTOMATIC CONTROL papers cover the problems such as zeolitte drying
process dynamics (three papers), the finite-time stability of linear singular
systems and the finite-time stability of discrete linear syngular systems
by Bellman-Gronval approach, the dynamics of complex mills, the mathematical
modelling of mill's plant and finite-time stability of time-delay systems.
A few papers were categorized into a SPECIAL session. The main issues
are the new trends in hydraulic system development, the hydraulic system
maintenance, the control system reconstruction for gas boilers, the problems
and the solutions to the isostatic presses, the new materials and new technologies
in hydraulics and pneumatics.
A session chairmen were the eminent professors in its areas, coming
from the Mechanical engineering faculties in Yugoslavia. Due to this fact,
both the papers and the corresponding discussion on were very qualitative