Decision
Support for Design of Production Planning and Control Systems
Dr.
Zora Arsovski CIM center. Faculty of Economic Science, Kragujevac
Dr.
Slavko Arsovski
Faculty
of Mechanical Engineering, Kragujevac
Summary: In the paper are given the basic elements of CIM company model and the fundamentals of the DSS development by application of the Petri nets. Especially are presented results of investigations that are related to the decision support for design (DSS) of product planning and control systems (PPC).
Keywords:
CIM, DSS, PPC, CIM models, Simulation, Petri nets, Production rules, DSS/PPC
The
Rider Tool A Real Time Approach to Manufacturing Decision Making
K.
Bechrakis, N. Papakostas, N. Giannelos, D. Mourtzis, G. Chryssolouris and A.
Fanikos, M. Eleftheriou
Abstract:
Distributed decision making is lately considered as a powerful approach for
encountering the complexity of the manufacturing environment. In this context,
the ESPRIT project RIDER6 has specified a framework for distributed
decision making in the production level. This framework is based on a
distributed agent architecture that is designed to incorporate the complexity
and the detail of a manufacturing system. Two pilot cases are examined in order
to evaluate the RIDER concept. RIDER is a three-year ESPRIT IV project that
started in January 1996 and is scheduled to end on December 1998.
A
Feature-Based Algorithm for Computer Aided Process Planning of Prismatic Parts
Prof.
Dr. - Ing. Habil K.-D. Bouzakis, Dipl. - Ing. G. Andreadis
Laboratory
for Machine Tools and Manufacturing Engineering, Mechanical Engineering
Department, Aristotels University of Thessaloniki, Greece
Abstract:
In the present paper a computer supported procedure to determine the process
plan of a work-piece, based on feature recognition and on eligible manufacturing
criteria is introduced. The data needed for the recognition of predefined
features, are extracted from a neutral file (IGES). The developed procedure
provides independence from any CAD program and compatibility and capability for
integration into any CAD/CAPP/CAM system, without any restrictions during the
design process of the work-piece.
Keywords:
Feature recognition, CAD, CAPP, IGES
Estimation
of Wheel Life using Neural Network
R.
Deivanathan, L. Vijayaraghavan, R. Krishnamurthy
Research
Scholar, Associate Professor, Professor Department of Mechanical Engineering
Indian Institute of Technology, Madras - 600 036, India.
Abstract:
The surface quality problems in the ground component arise mainly due to the
deteriorating condition of the working surface of the wheel. Intermittent wheel
dressing is the only solution for this and hence a proper estimate of the
redressing interval (i.e.) the wheel life, is necessary in grinding process
planning. In this paper an analysis have been done to model the wear process,
which are largely complicated and hence pose difficulties during in-process
implementation. A simple yet effective technique for this problem is the
Artificial Neural Network. The performance of neural network in predicting the
wheel life is compared with other techniques as the linear regression and the
power function model.
Zoran
Miljkovic
The
University of Belgrade Mechanical Engineering Faculty Production Engineering
Department 27. marta 80, 11 000 Belgrade, Yugoslavia
Abstract
- This paper analysis abilities which modern
industrial robot should possess so that it can be called autonomous, owing to
development of empirical control strategy. Established concept of empirical
robot control at all levels (recognition, sensor-motor coordination and robot
control on execution level) is based on learning algorithms of artificial neural
networks. Aiming to verify the set up concept of empirical robot control on the
basis of the recognition system and machine learning, experimental system is
developed. Experimental system consists of SONY TR 512E CCD camera, IBM
PC Pentium computer with FAST AVIATOR video card, several developed
software subsystems and educational industrial robot MITSUBISHI MOVEMASTER-EX,
i.e. anthropomorphic robot Don Kihot. Experimental results showed that
empirical robot control strategy, based on empirical control algorithm,
successfully realizes manipulation of objects in order to solve robotic assembly
task .
Keywords:
mechatronics, empirical robot control, recognition system, machine learning.
Using
Formal Description Technique ESTELLE for Manufacturing Systems Specification or
Description
Sousa
R., Putnik G., Moreira F.
Production
and Systems Engineering Department - School of Engineering University ofMinho,
Campus ofAzurem, 4800 Guimaraes, Portugal Tel: ++351 (0)53 510278, Fax.:
++351(0)53 510268
Email:
rms@eng.uminho.pt Email: putnikgd@eng.uminho.pt ^mail: fmoreira@eng.uminho.pt
Summary:
Usually the description of a system is given in natural language or in diagrams.
It is very hard to make this kind of informal description clear, concise and
unambiguous. Implementations based on informal specifications are usually prone
to errors, omissions and incompatibilities. This paper presents an attempt to
introduce. Formal Description Techniques (FDT's), originally developed for the
area of telecommunications and data transfer, as a mean for the
specification/description of manufacturing systems. A brief introduction on
standard FDT's, LOTOS, ESTELLE and SDL is given. Several concepts were behind
the development of these techniques and this paper exploits the extended finite
state machine (EFSM) concept as a suitable form for specification/description of
manufacturing systems using FDT ESTELLE.
Keywords:
Formal Description Techniques; Formal Specification; ESTELLE; Manufacturing
Systems.
Sasa
Zivanovic,
Production
Engineering Department Mechanical Engineering Faculty University of Belgrade /
YU
Abstract:
- The subject of this paper is the machining
system with machine tool, designed by the parallel
mechanism
necessary motors, transmission and corresponding control. Such processing system
has got, by the rule, six axes and it is kinematic redundant in relation to most
methods of cutting which is carried out by traditional machine tools.
Incorporated parallel mechanism has got parallel axes, so these machine tools
are said to have virtual axes. This virtuality is the consequence of parallel
mechanism working principle. This is the first time it appears on such machine
tools. Its characteristic is difference between machine axes and necessary tool
movements in relation to workpiece in programming. Until present times the unit
mapping from necessary movement coordinates in Decart coordinate system on
available machine movements was possible, because in traditional machine tools
serial orthogonal mechanisms were incorporated. On the basis of insight into
already existing accomplishment in realizing machine tools with parallel
kinematics and my own researches this paper plan to carry out real knowledge by
the method of unfinished concept, which it is better to make self concepts and
develop further this conception instead of buying somebody else's unfinished
product. That is why designing of certain manufacturing module with parallel
mechanism was planned. The idea is to use available resources of traditional
manufacturing equipment in an untraditional an educational system without
getting into development and building of typical components for communication,
programming motors, and control.