Intelligent robotics and control UMT (IRCU) laboratory

Recent Publications

S.G. Tzafestas, "Knowledge-Based System Diagnosis, Supervision and Control Plenum Press", New York-London, 1990.

S . G . Tzafestas , J . K . Pal , eds , " Real Time Microcomputer Control of Industrial Processes", Kluwer, Boston-Dordrecht, 1990.

S.G. Tzafestas, "lntelligent Robotic Systems", Marcel Dekker, New York, 1991.

S.G. Tzafestas, "Microprocessors in Robotic and Manufacturing Systems" Kluwer, Boston-Dordrecht, 1991.

S.G. Tzafestas, "Engineering Systems with Intelligence: Concepts, Tools and Applications" , Kluwer, Boston-Dordrecht, 1991 .

S.G. Tzafestas, "Robotic Systems:Techniques and Applications", Kluwer, Boston-Dordrecht, 1992.

S. Tzafestas, P. Borne, L. Grandinetti, "Parallel and Distributed Computing in Engineering Systems", Elsevier/ North Holland, 1992.

P. Borne, S. Tzafestas, N.E. Radhy, "Mathematics of the Analysis and Design of Process Control", Elsevier/ North Holland, 1992.

" R. Hanus, P. Kool, S. Tzafestas, Mathematical and Intelligent Models in System Simulation" , IMACS Annals on Computing and Applied Mathematics, Vol. 11 , Wimmers Sci. Publ. , 1992.

" J-C. Gentina, S.G. Tzafestas, Eds., Robotics and Flexible Manufacturing Systems", Elsevier/ North Holland, 1992.

S.G. Tzafestas, K. Watanabe Eds., "Stochastic Large-Scale Engineering S stems , Marcel Dekker, New York, 1992.

S.G. Tzafestas, "Expert Systems in Engineering Applications", Springer, (ln press), Berlin, 1993.

S . G. Tzafestas , " Applied Optimal Conaol " , Marcel Dekker , New York, (On press) , 1993.

S.G. Tzafestas, A.N. Venetsanopoulos, "Fuzzy Reasoning in Information Decision and Control Systems", Kluwer, Boston-Dordrecht, (ln press), 1993.

S.G. Tzafestas, "Artificial intelligence and expert systems in control: An overview, Syst. Anal. Modelling Simul.", Vol.7, No.3, pp. 171-190, 1990.

S.G. Tzafestas, L. Dritsas, "Combined computed torque and model reference adaptive control of robot systems", J. Franklin Inst. , Vol.327, pp.273-294, 1990.

K. Watanabe, S.G. Tzafestas, "A hierarchical multiple model adaptive control of discrete-time stochastic systems for sensor and actuator uncertainties", Automatica, Vol. 26, pp. 875-886, 1990.

S.G. Tzafestas, "Petri-net and knowledge-based methodologies in manufacturing systems modelling simulation and control", Systems and Control Encyclop.: Suppll, Pergamon Press, 1990.

S.G. Tzafestas, G. Kehriotis, "A numeric symbolic expert system for 2-D and 3-D object recognition in robotic applications", Math. Comput. Simul., Vo1.32, pp 403-418, 1990.

S.G. Tzafestas, M. Skolarikos, "Sensor fault detection in large scale systems via overlapping decomposition", Autom. Product. Info. Ind.,(APll), Vol. 24, pp. 413-434, 1990.

N. Theodorou, A. Kanellakis, S.G. Tzafestas, "New criteria for the absence of limit cycles in 2-D digital filters", Int. J. Syst. Sci., Vo1.21, No. 8, pp. 1727-1732, 1990.

S.G. Tzafestas, "Al techniques in computer aided manufacturing systems In: Knowledge Engineering", (Ed. H.Adeli, McGraw-Hill ), pp. 161-212 1990.

S.G. Tzafestas, N. Papanikolopoulos, "lncremental fuzzy expert PID control , IEEE Trans . on Industrial Electronics " , Vol . 37, No. 5 , pp. 365- 371 ,1990.

S. Tzafestas, A. Kanellakis, N. Theodorou, "Method for computing the stability margin of 2D discrete systems", Electron. Lett., Vo1.26, No.15, pp. 1139- 1140, 1990.

K. Watanabe, S. Tzafestas, "Observations weighted controllers for SISO stochastic systems using a perturbed-type duat criterion", Int. J. Control, Vo1.52, No.5, pp. 1019-1034, 1990.

K. Watanabe, S. Tzafestas, "Decentralized estimation algorithms for a backward pass fixed-interval smoother", Int. J. Syst. Sci., Vo1.21, No.5, pp.913-931, 1990.

K. Watanabe, S. Tzafestas, "Stochastic controls for systems with faulty sensors", ASME J. Dynamic Syst. Meas. and Control, Vo1.112, No.l, pp.l43-14, 1990.

S. Tzafestas, K. Watanabe, "'Learning algorithms for neural networks with the Kalman filters", J. Intell. and Robotic Syst., Vol.3, No.4, pp.305-319, 1990.

J.K. Pal, S.G. Tzafestas, "Modelling and simulation, In: Real Time Microcomputer Control of Industrial Processes", Kluwer, pp. 187-233, 1990.

S.G. Tzafestas, J.K. Pal, "Digital control algorithms, In: Real Time Microcomputer Control of Industrial Processes", Kluwer, pp.81-138, 1990.

S.G. Tzafestas, K. Watanabe, "Modern approaches to system, sensor fault detection and diagnosis", Journal A, Vo1.31, No.4, pp.42-57, 1990.

S.G. Tzafestas, "lntroduction to intelligent robotic systems, In: Intelligent Robotic Systems " , Marcel Dekker , pp . 3-42 , 199 1 .

S.G. Tzafestas, Adaptive, robust, and rule-based control of robotic manipulators, In: Intelligent Robotic Systems", Marcel Dekker, pp.313-419, 1991.

A. Kanellakis, S. Tzafestas, N. Theodorou, Stabilit tests for 2-D s stems using the Schwarz form and inners determinants", IEEE Trans. Circuits and Syst., Vol.CAS 38, pp.1071-1077, 1991.

I. Jaworska, S. Tzafestas, "Robust stability analysis of robot control systems", Robotics and Autonomous Syst., Vo1.7, pp.285-290 ,199I.

K. Watanabe, T. Fukuda, S. Tzafestas, An iterative learnin control scheme using the weighted least-squares method " , J. Intell . Robotic Syst., Vo1.4, No.3, pp.267-284 ,1991.

K. Watanabe, K. Shiramizou, T. Fukuda, S. Tzafestas, An iterative learning control for noisy systems by using linear neural networks", In: Engineering Systems with Intelligence, (Ed. S. Tzafestas), Kluwer, pp.205 212 ,1991.

C. Athanassiou, S.G. Tzafestas, "Flexible Petri net modelling environment for intelligent robot cells", In: Engineering Systems with Intelligence, (Ed: S . Tzafestas) , Kluwer, pp .593-604 , 1991.

I. Jaworska, S.G. Tzafestas, "lmprovement of system reliability using robust control theory", Int. J. Systems Sci., Vol.22, pp.587-593, 1991.

S.G. Tzafestas, G. Kapsiotis, S. Reveliotis, "A dual algorithm for post optimization of the generalized network optimal tlow problem", Found. Computing and Decision Sci., Vol. 16, No. 1, pp.39-54, 1991.

S.G. Tzafestas, E.S. Tzafesta, "The blackboard architecture in knowledge- based robotic systems", In: Expert Systems and Robotics, (T. Jordanide, B. Torby, Eds.), Springer, Series F: Vol.71, pp.285-317, 1991.

S.G. Tzafestas, "Task grouping and scheduling for parallel processing", In: Systems and Control-Topics in Theory and Applications, (T. Ono, F. Kozin, Eds), MITA Press, pp.401-419, 1991.

S: Tzafestas, A. Kanellakis, N. Theodorou, Two-dimensional digital filters without overflow oscillations and instability due to finite word length", IEEE Trans. on Signal Processing, Vo1.40, No.9, pp.2311-2317, 1992.

A. Kanellakis, S. Tzafestas, N. Theodorou, "Computation of the stability margin of two-dimensional discrete systems", IEEE Trans. Autom. Control Vo1.37, No.6, pp.824-827, 1992.

S. Tzafestas, A. Kanellakis, N. Theodorou, "Application of the frequency dependent Lyapunov equation to 2-dimensional problems", Proc. IEE, Part D: Control Theory and Appis., Vo1.l39, No.2, pp.l97-203, 1992.

S. Tzafestas, N. Konstantinidis, G. Saroglou, "ESlD: An expert system for diagnosis and therapy of infectious diseases", Syst. Anal. Modell. Simul., Vol.9, No.l, pp.l-21,1992.

S. Tzafestas, B. Kalobatsos, G. Stavrakakis, A. Zagorianos, Some results concerning the autonomous trajectory generation and adaptive control of industrial robots", J. Franklin Inst., Vo1.329, No.l, pp.l-14, 1992.

S.G. Tzafestas, "Distributed parameter systems estimation and control: An update", In: Syst. and Control Encyclop:Suppl. 2, (Ed. M. Singh), Pergamon, pp.710-723, 1992.

S.G. Tzafestas, K. Watanabe, "Filtering, smoothing and control in discrete- time stochastic distributed sensor networks", In: Large Scale Engineering Stochastic Systems, Marcel Dekker, pp.229-252, 1992.

A. Triantafyllakis, S.G. Tzafestas, "Optimal grouping of dependent tasks for parallel scheduling" , In: Parallel and Distributed Computing in engineering Systems ,(Eds. S. Tzafestas, P. Borne, L. Grandinetti), pp.135-139, 1992.

N. Mastorakis, N. Theodorou, S.G. Tzafestas, "Multidimensional transfer function factorization using the state space approach" , In: Parallel and Distributed Computing in Engineering Systems,(Eds. S. Tzafestas, P. Borne, L. Grandinetti), pp.497-499, 1992.

K. Watanabe, T. Fukuda, S.G. Tzafestas, "Generalized predictive control for linear stochastic systems in a state space approach", In: Parallel and Distributed Computing in Engineering Systems, (Eds. S. Tzafestas, P. Borne , L . Grandinetti) , pp . 5 11 -5 16 , 1992 .

G. Kapsiotis, S.G. Tzafestas, "Decision making for inventory, production planning using model based predictive control", In: Parallel and Distributed Computing in Engineering Systems, (Eds. S. Tzafestas, P. Borne, L. Grandinetti).

S.G. Tzafestas, G. Kapsiotis, S. Reveliotis, "The generalized network approach to optimized decision making and planning", In: Computational Systems Analysis: Topics and Trends, (Ed. A. Sydow ) Elsevier, IVorth Holland , 1992.

F.V. Hatzivassiliou, S.G. Tzafestas, "A path planning method for mobile robots in a structural environment", In: Robotic Systems: Advanced Techniques and Appl ications , (Ed . S . G . Tzafestas) , K1 uwer , pp . 26 1 -270 , 1992.

G. Tzafestas, S. Magoulas, A. Triantafyllakis, "An interactive advisory forecasting system Found Com . and Decision Sci., Vo1.17, No.4, 1992.

S.G. Tzafestas, A. Triantafyllakis, "Optimal task scheduling via the LPT and MULTIFIT heuristics under a geometric progression condition", Found. Comp.and Decision Sci., Vol.17, No.2, pp.99-107, 1992.

S.G. Tzafestas, N. Konstantinidis, "ENGEXP: An integrated environment f˘r the development and application of expert systems in equipment and engine fault diagnosis repair" , Advances in Engrg. Software, Vol. 14, No. 1 , pp.3-14, 1992.

1V . M . Mastorakis , N . J . Theodorou , S . G . Tzafestas , Factorization of m-D polynomials in linear m-D factors", Int. J. Systems Science Vol.23 pp.1805-1824, 1993.

K. Watanabe, S.G. Tzafestas, "Generalized pseudo-Bayes estimation and detection for abruptly changing systems", J. Intell. Systems and Robotic Systems, Vol.7, No. 1 , pp.95-112, 1993.

S.G. Tzafestas, L. Palios, F. Cholin, "A diagnostic expert system inference engine based on the certainty factors model " , Knowledge-Base Systems 1993.

S.G. Tzafestas, K. Watanabe, "Techniques for adaptive estimation and control of discrete-time stochastic systems with abruptly changing parameters", In: Control of Dynamic Systems: Advances in Technology Methods in Aerospace Vehicle Systems Design, (Ed. C.T. Leondes ) Academic Press , 1993.

S . G . Tzafestas , A . I . Kokkinaki , K . P . Valavanis , " An overview of expert systems, In: Expert systems in Engineering Applications", Springer Verlag, 1993.

S.G. Tzafestas, A. Adrianopoulos, "Knowledge acquisition for expert system design", In: Expert Systems in Engineering Applications, Springer- Verlag , 1993 .

K.P. Valavanis, S.G. Tzafestas, "Expert systems for Intelligent Control Applications", In:Expert Systems in Engineering Applications, Springer- Verlag, 1993.

A . I . Kokkinaki , K . P . Valavanis , S . G . Tzafestas , " A survey on expert system tools and engineering based expert systems" , In: Expert Systems in Engineering Applications, Springer-Verlag, 1993.

S . G . Tzafestas , K . Watanabe , " Failure detection and identification for dynamic systems: ,(l) Statistical Approaches", In: Applied Optimal Control Marcel Dekker , pp . 3-44 , 1993 .

S.G. Tzafestas, K. Watanabe, "Failure detection and identification for dynamic systems: (ll) Analytical Redundancy Approaches", In: Applied Optimal Control, Marcel Dekker, pp.45-78, 1993.

A. Kur lowicz, I. Jaworska, S.G. Tzafestas, Robust stabilizing control: An overview", In: Applied Optimal Control, Marcel Dekker, pp.289-324, 1993.

S . G . Tzafestas , A . N . Venetsanopoulos , " Fuzzy logic and fuzzy reasoning : An introduction" , In: Fuzzy Reasoning in Information, Decision and Control Systems, Kluwer, 1993.

S.G. Tzafestas, A.N. Venetsanopoulos, S. Terzakis, "Fuzzy estimation techniques: An overview with new results", In: Fuzzy Reasoning in Information, Decision and Control Systems, Kluwer, 1993.

A . N . Venetsanopoulos , S . G . Tzafestas , S . Terzakis , " Fuzzy dynamic systems: Analysis and design aspects", In: Fuzzy Reasoning in Information Decision and Control Systems, Kluwer, 1993.

S.G. Tzafesta, G. Stamou, "A neuro-fuzzy inference system with application to controller design" , In: Fuzzy Reasoning in Information, DecisĦon and Control Systems, Kluwer, 1993.

F.V. Hatzivassiliou, S.G. Tzafestas, "Analysis and design of a new ppiezo- resistive tactile sensor system for robotic applications " , J . Intell . and Robotic Syst. , 1993 .

A. Triantafyllakis, S.G. Tzafestas, "lmproved optimal algorithms for scheduling unit-length independent tasks on uniform machines", Int. J. Systems Science, 1993.

S.G. Tzafestas, A. Triantafyllakis, "Reduced complexity algorithms for scheduling independent tasks on uniform machines" , Modelling and Scientific Computing, 1993.

K. Valavanis, A.l. Kokkinaki, S.G. Tzafestas, "Knowledge based systems in engineering applications", J. Intell. and Robotic Systems, 1993.

G. Kapsiotis, S.G. Tzafestas, "Hierarchical control approach to a composite inventory-marketing problem" , J. Intell. and Robotic Syst. , 1993.

N.E. Mastorakis, N.J. Theodorou, S.G. Tzafestas, "A general factorization method for multivariable polynomials", Multid. Systems and Signal Processing, 1993.

S . G . Tzafestas , P . Dal ianis , G . Anthopoulos , " On the overtraining phenomenon of back-propagation neural networks " , Math . Computers in Simul., 1993.

S.G. Tzafestas, F. Hatzivasiliou, "Human-Computer Interface: Artificial Intelligence and Software Psychology Issues", Proc. Europ. Conf. on Geographical Information Systems, (EGlS'90), Amsterdam, April 11-13 1990.

S . Tzafestas , A . Zagorianos , " Robot Model Reference Adaptive and Model Based Predictive Control: The ROBOTCON Software Package" , Proc. CIM- Europe Workshop, (ESPRlT CIM) on Computer Integrated Design of Controlled Industrial Systems, pp.215-223, Paris, April 26-27, 1990.

S . Tzafestas , K . Watanabe , " Modern Approaches to System , sensor Fault Detection and Diagnosis", Proc. Intern. Symp. on Intelligence and Quality (lBRA-BlRA), Brussels, 10-15 May, 1990.

S.G. Tzafestas, E.S. Tzafestas, "The Blackboard Architecture in Knowledge Based Robotic Systems " , Proc. ASI on " Expert Systems and Robotics " , July 16-27 , 1990.

S.G. Tzafestas, G. Kapsiotis, S. Reveliotis, "A Dual Algorithm tor Post- Optimization of the Generalized Network Optimal Flow Problem' , Proc. Operations Research 90 Conf., (DGOR, OGOR, GMOOR, SVOR),Vienna, Aug. 28-31, 1990.

S. Tzafestas, A. Elianos, G. Sarogloy, "BlOEXP: An Expert System for Therapeutical Use in Pneumonia Treatment", Proc. IMACS, IFAC Symp. on Mathematical and Intelligent Models in System Simulation, MIM-52'90, Brussels, Sept. 3-7, 1990.

N. Mastorakis, S. Tzafestas, N. Theodorou, A Simple Multidimensional Polynomial Factorization Method", Proc. IMACS,lFAC Symp. on Mathematical and Intelligent Models in System Simulation, (MlM-52'90), Brussels, Sept. 3-7, 1990.

C. Athanassiou, S. Tzafestas, "Discrete Event Simulated Execution of Petri Net Models Ilsing AI Techniques", Proc. IMACS,lFAC Symp. on Mathematical Models in System Simulation, (MlM-52'90), Brussels, Sept. 3-7, 1990.

H. Schneider, S.G. Tzafestas, "lntegrated Approach to Computer-Aided Multi-Supplier, Multi-Distributor Operations in the Automotive Industry", Proc. 23rd Intl. Symp. on Automotive Technology and Automation, (lSATA'90), Vienna, Dec. 3-7, 1990.

S.G. Tzafestas, C. Athanassiou, "Flexible Petri Nets for Rapid Prototyping of Robotic Cells", Proc. 23rd Intl. Symp. on Automotive Technology and Automation, (lSATA '90), Vienna, Dec.3-7, 1990.

F.V. Hatzivasiliou, S.G. Tzafestas, "Human Computer Intelligent Interface Design Using Software Psychology", Proc. Sth Intl. Symp. on Computer and Information Sciences, (lSClS V), Cappadocia, Oct.30-Nov.3, 1990.

Y. Ste hanedes, S. Tzafestas, C. Botsaris, E. Kwon, Optimal control of nonlinear transportation systems", Proc. 29th IEEE Conf. on Decision and Control, Honolulu, Hawaii, Dec. 1990.

S. Tzafestas, C. Athanassiou, "An enhanced Petri nets environment: Graphic aids and performance evaluation issues", Proc. IMACS Intl. Symp. on Modelling and Control of Technological Systems, Lille, France, May 1991.

S . Tzafestas , " Robotics in European educational institutions " , Proc. IMACS Intl. Symp. on Modelling and Control of Techological Systems, Lille, France, May 199 1.

C. Athanassiou, S. Tzafestas, "Flexible Petri net modelling environment for intelligent robot cells", Proc. EURISCON'91: The Europ. Robotics and Intell. Syst. Conf. , Corfu, Greece, June 1991.

K. Watanabe, K. Shiramizou, T. Fukuda, S. Tzafestas, "An iterative learning control for noisy systems by using linear neutral networks" , Proc. EURISCON'91, Corfu, June 1991.

F. Hatzivassiliou, S. Tzafestas, "A path planning method for mobile robots in a structured environment " , Proc. EURISCON ' 9 1 , Corfu , June 199 1.

E. Tzafestas, S. Tzafestas, "An overview of robot path planning: Assessment for integration", EURISCON'91, Corfu, June 1991.

A. Triantafyllakis, S. Tzafestas, "Optimal grouping of dependent tasks for parallel scheduling", Proc. P.D. COM'91: IMACS/ IFAC Symp on Parallel and Distributed Computing, Corfu, June, 1991.

K. Watanabe, T. Fukuda, S. Tzafestas, Generalized predictive controls for linear stochastic systems by using a state space approach", Proc. P. D. COM'91, Corfu, June 1991.

N. Mastorakis, N. Theodorou, S. Tzafestas, "Multidimensional transfer function factorization using the state space approach", Proc. P.D.COM'91 Corfu, June 1991.

G. Kapsiotis, S. Tzafestas, "Decision making for inventory, production planning with model based predictive control " , Proc. P. D . COM ' 9 1 , Corfu, June 1991.

S. Tzafestas, E. Tzafestas, "lntelligent FMS control using the blackboard model " , Proc. ECC '91 : Europ. Control Conf. , Grenoble, France, July 1991.

S. Tzafestas, K. Watanabe, "Some results on the estimation and control of faulty dynamic systems " , Proc. ECC ' 9 1 : Europ. Control Conf. , France, July 1991.

A. Triantafyllakis, S. Tzafestas, "Parallei scheduling of tasks with AND OR dependencies" , Proc. IMACS Congress on Computation and Applied Mathematics, Dublin, July 1991.

S. Tzafestas, A. Zagorianos, A. Grafakou, "Model-based predictive control scheme with application to robots", Proc. IMACS Congress on Computation and Applied Mathematics, Dublin, July 1991.

S. Tzafestas, I. Jaworska, T. Laski, "Robustness study of two simulated manipulator control algorithms", Proc. IMACS Congress on Computation and Applied Mathematics, Dublin, July 1991.

K. Watanabe, T. Fukuda, S. Tzafestas, "An adaptive control for CARMA systems using linear neural networks", Proc. IMACS Congress on Computation and Applied Mathematics, Dublin, July 1991.

S. Tzafestas, "Second generation diagnostic expert systems: Requirements architectures and prospects", Proc. SAFEPROCESS'91: IMACS,lFAC Intl. Symp. on Fault Detection and Safety for Technical Processes, Baden-Baden, Germany, Sept. 1991.

A. Zagorianos, S. Tzafestas, G. Stavrakakis, "On-line discrete-time control of industrial robots", Proc. IFAC,lFlP,lMACS Symp. on Robot Control: SYROCO'91, Vienna, Austria, September 1991.

S . Tzafestas , G . Vagelatos , G . Kapsiotis , " An enhanced general ized model- based predictive control algorithm", Proc. 30th IEEE Conf. on Decision and Control , Brighton, U . K . , December 1991.

S. Tzafestas, J. Christou, Y. Yip, "Multi-fault diagnosis of digital systems using nonmonotonic reasoning", Proc. 30th IEEE Conf. on Decision and Control , Brighton, U . K . , December 1991.

S. Tzafestas, H. Verbruggen, "lntelligent control: An overview of concepts techniques and applications", Proc. 30th IEEE Conf. on Decision and Control , Brighton, U . K . , December 1991.

K. Watanabe, S. Jin, S.G. Tzafestas, "An iterative learning fuzzy control for multi-link manipulators", Proc. IMACS/SlCE Intl. Symp. on Robotics Mechatronics and Manufacturing Systems, (RM25'92), Kobe, Japan September 1992.

S. Tzafestas, K. Valavanis, "lntelligent Systems in Manufacturing", Proc. IMACS, SICE Intl. Symp. on Robotics, Mechatronics and Manufacturing Systems, (RM25'92), Kobe, Japan, September 1992.

K. Watanabe, S.G. Tzafestas, "Fuzzy logic controller as a compensator in the problem of tracking control of manipulators", Proc. IFToMM-jc Intl. Symp. on Theory of Machines and Mechanisms, pp.98-103, 1992.

A. Zagorianos, E. Kantoyannis, S. Tzafestas, "Resolved motion model- based predictive control of redundant robots", 2nd IMACS Symp. on Mathematical and Intelligent Models in System Simulation, Brussels, Belgium, April 1993.

S. Tzafestas, G. Kapsiotis, "PlD self tuning control combining pole- placement and parameter optimization features", 2nd IMACS Symp. on Mathematical and Intelligent Models in System Simulation, Brussels, Belgium, April 1993.

S. Tzafestas, G. Kapsiotis, "An integrated multi-product dyr;amic nroduction model", APMS'93: Intl. Conf. on Advances in Production Management Systems, Athens, Greece, Sept. 1993.

S. Tzafestas, G.B. Stamou, "A Neuro-Fuzzy Inference System with improved performance", AIEIVG'93: Intl. Conf. on Artifcial Intelligence in Engineering, Toulouse, France, June 1993.

M. Raibert, S. Tzafestas, K. Tzafestas, Com arative stud of three control techniques applied to a biped robot", 1993 IEEE/ SMC Conf. on Systems Engineering in the Service of Human, Le Tourquet, France, Oct. 1993.

S.G. Tzafestas, G. Vagelatos, "On the inverse design problem of GMBPC", IEEE Medit. Symp. on New Directions in Control Theory and Applications, Chania, Crete, Greece, June 1993.

S.G. Tzafestas, F.V. Hatzivassiliou, S. Kaltsounis, "Robotic fruit collector: A fuzzy logic solution to the non-destructive fruit collection problem", COMCON' 4: 4th Intl. Conf. on Advances in Communication and Control, Rhodes , Greece , June 1993.

S.G. Tzafestas, G. Anthopoulos, P. Dalianis, "A study of the generalization capability versus training in backpropagation neural networks", 1993 IEEE,SMC Conf. on Systems Engineering in the Service of Human, Le Tourquet, France, Oct. 1993.

K. Watanabe, T. Fukuda, S.G. Tzafestas, "A new heuristic approach for scheduling dependent tasks onm5l. identical machines to minimize the makespan", IEEE Medit. Symp. on New Directions in Control Theory and Applications, Chania, Crete, Greece, June 1993.

K . Watanabe , 7 . Fukuda, S . G . Tzafestas , " A force control method using the relative motion between the manipulator and a workpiece", 1?th IFAC World Congress, Sydney, Australia, July, 1993.

S. Tzafestas, P. Dalianis, "Diagnosis of multiple simultaneous faults of complex systems: An expert system implementation for the automotive domain", EUFIT '93: First Europ. Congress on Fuzzy and Intelligent Technologies, Aachen, Germany, September 1993.

G. Frangakis, S. Tzafestas, P. Dalianis, "HEMEDES: A hybrid environment for the development of knowledge-based medical diagnosis- therapy systems " , First IVewcastle Inti . Conf. on Quality and its Applications, Newcastle Upon Tyne, England, September 1993.

K. Watanabe, K. Hara, S. Tzafestas, "Fuzzy controller design using the mean-value-based functional reasoning", Intl. Joint Conf. on Neural Networks , October 1993.

S. Tzafestas, G. Frangakis, V. Prival, "Simulation of a robotic conlol system: PID and autonomous trajectory generating schemes", Proc. MATHMOD Vienna Conf. , February 1994.

I. Jaworska, T. Iaski, S. Tzafestas, "Robustness simulation study of classical and adaptive control applied to the AUTOMELEC ACR robotic manipulator", Proc. MATHMOD Vienna Conf., February 1994.