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Working Groups


The following Working Groups are active. 


WG "Time delay systems" 

The focus of this WG is on all aspects concerning time delay systems: modelling and identification, analysis, filtering and estimation, stability and stabilization, structural issues, robustness, approximation techniques and numerical issues, control schemes and application in process control, networked systems, communication, bioengineering, economics and other fields.

WG "Fractional differentiation and fractional order systems" 

The focus of this WG is on the analysis of fractional order systems. Some results are already available: Representation of fractional order systems, Stability conditions for commensurate fractional order systems, Simulation and sampling methods for fractional order systems, Observability and controllability conditions for commensurate fractional order systems, System identification methods, Fractional PID and robust control methodologies, Vibration insulations, Filtering. Some challenges are the following: Find physical and the geometrical meanings of the fractional derivative operators, find stability, observability, controllability conditions for non-commensurate fractional order systems, build a consistent theory of fractional quantum mechanics, fractional quantum field theory, fractional differential geometry, develop analysis on time-delay fractional order systems, extend the existing results to nonlinear fractional order systems, extend LQR and LQG control to fractional order systems, apply in the industrial framework. 

WG "Control of Complex Systems" 

The focus of the working group is on the study of structural properties of systems which consist of the interconnection of a number of basic components (subsystems) and are characterized by complexity due to one or more of the following features: uncertainty or lack of knowledge about the dynamics of the single components; uncertainty or variability of the interconnection topology; hybrid and/or heterogeneous nature of the involved sub-processes; possibility to implement different functioning, information and/or decision making structures in response to goals and operational requirements; necessity to operate in variable and/or uncertain environments; large dimensionality. Examples of Complex Systems in the above sense are the so-called Structure Evolving Systems, the Switching Systems, the more general Systems of Systems. Applications are found in modeling and controlling natural processes in e.g. biology, genetics, social sciences as well as man-made processes in engineering design, networks and communications, power distribution, management. 

WG "Symbolic computation methods for linear functional systems" 

Symbolic computation methods have been largely employed, in the recent past, by several groups of control theorists for studying structural properties and synthesis problems and computer algebra packages have recently been developed to study linear control functional systems. In this framework, the aim of the working group is to gather world specialists of symbolic computation and control theory experts to promote both the development of theoretical methods and their application to relevant engineering problems.