This paper is focused on an IEC 61499 based solution for modeling and implementing some dynamic interactions between holons within a manufacturing control system. The reconfiguration capabilities of the standard are considered for managing the dynamic behavior of the holons. Key-Words: holonic manufacturing systems, IEC 61499, reconfiguration, management commands

In this paper we consider the problem of graceful performance degradation, for affine non-minimum phase nonlinear systems. The method is an optimization based scheme, that gives a constructive way to re-shape on-line the output reference for the post-fault system, and explicitly take into account the actuators and states saturations. The on-line output reference reshaping is associated with an ...

The problem of controlling a system in the presence of unknown actuator and sensor faults is addressed. The system is assumed to have groups of actuators, and groups of sensors, with each group consisting of multiple redundant similar actuators or sensors. The types of actuator faults considered consist of unknown actuators stuck in unknown positions, as well as reduced actuator effectiveness. ...

This paper deals with the partial reconfiguration of the discrete control systems due to resource failures using the structural redundancy of the global system model. The approach herein proposed introduces a new subclass of Interpreted Petri Nets (IPN), named Interpreted Machines with Resources (IMR), allowing representing both the behaviour of a system and the resource allocation. Based on th...

We present a complete, local, and parallel reconfiguration algorithm for metamorphic robots made up of Telecubes, six degree of freedom cube shaped modules currently being developed at PARC. We show that by using 2x2x2 meta-modules we can achieve completeness of reconfiguration space using only local rules. Furthermore, this reconfiguration can be done in place and massively in parallel with ma...

Introduction The Willow architecture provides a comprehensive architectural approach to the provision of survivability [8] in critical information networks. It is based on the notion that survivability of a network requires reconfiguration at both the system and the application levels. The Willow notion of reconfiguration is very general, and the architecture provides reconfiguration mechanisms...

Software self-reconfiguration is the capability of software systems to change autonomously their current configuration to a better one. This is a more and more requested feature, particularly for software systems that operate in critical domains when human intervention is not possible or not convenient. The Belief-Desire-Intention (BDI) architecture proposes a structured Monitor-Diagnose-Compen...

An optimization algorithm for the problem of control reconfiguration in response to operating condition changes or abrupt system component failures is presented here. The algorithm utilizes a version of the BroydenFletcher-Goldfarb-Shanno (BFGS) optimization method of conjugate directions. The algorithm provides an output feedback controller that not only stabilizes the new/impaired system, whe...

in this research optimal reconfiguration strategy of the improved srr reconfigurable mobile robot based on force-angle stability measure has been designed using genetic algorithm. path tracking nonlinear controller which keeps robot’s maximum stability has been designed and simulated in matlab. motion equations of the robot have been derived in parametric form by means of newton- euler, lagrang...

Embedded systems normally involve a combination of hardware and software resources designed to perform dedicated tasks. Such systems have widely crept into industrial control, automotive, networking, and consumer products. These systems require efficient devices that occupy small area and consume low power. The device area can be minimized by reusing the same hardware for different applications...