The orientation of a satellite in space described relative to some other object or system is known as the attitude of the satellite. The attitude may be changing with time. To be able to control the attitude of the satellite, it must be equipped with actuators that can produce the required torque. Control Moment Gyroscope is a space craft control actuator which acts as torque amplifier. It is s...

Architectural runtime reconfiguration is a promising means for controlling the quality of service (QoS) of distributed software systems. Particularly self-adaptation approaches rely on runtime reconfiguration capabilities provided by the systems under control. For example, our online capacity management approach SLAstic employs changing component deployments and server allocations to control th...

It is generally accepted that building software out of loosely coupled components, such as in service-oriented systems or mobile networks, yields applications that are more robust against changes and failure of single components than monolithic systems. In order to accommodate for changes in the environment or in the requirements, and anticipate to a component failure, applications are often dy...

This paper presents the development of an integrated reconfigurable control allocation approach. This integrated approach combines frequencyapportioned control allocation with actuator failure detection and isolation. Frequency-apportioned control allocation integrates innovative control effectors with conventional aerodynamic controls and considers both the steady-state performance and frequen...

We consider the problem of distributed multi-robot team formation including the dynamic reconfiguration of robot teams after encountering obstacles. We describe a distributed robot team reconfiguration algorithm, DYN-REFORM, that uses a game-theoretic technique of team formation called weighted voting games(WVGs) along with a flocking-based formation control mechanism. DYNREFORM works without e...

Dynamically adaptable computing systems are promising research area at developing systems which can adapt to changes in their environment while executing. The premisses for such systems are reconfigurable computing systems which allow the system hardware to be changed periodically in order to execute different applications on the same hardware. Partial reconfiguration is the prerequisite of rec...

Two different interfaces, namely the JTAG and SelectMAP interfaces, have been proposed for controlling and managing partial reconfiguration of SRAM-based Field Programmable Gate Arrays (FGPAs). Each of these interfaces provides distinct advantages in terms of area overhead and reconfiguration latency. In this paper, two corresponding sets of Application Programming Interfaces (APIs) are develop...

This thesis addresses the formal verification of a support infrastructure for resilient dynamically reconfigurable systems. A component-based system, whose architectural configuration may change at runtime, is classed as dynamically reconfigurable. Such systems require a support infrastructure for the control of reconfigurations to provide resilience. The verification of such reconfiguration su...

This work deals with reconfigurable control functions and protocols for supporting mobile computing applications in heterogeneous wireless systems like cellular networks and WLANs. The control functions are implemented in a software module, named Reconfigurable Access module for MObile computiNg applications (RAMON), placed in mobile and/or base stations. RAMON operates on abstract models of th...

This paper deals with the control reconfiguration problem of partial actuator failure in a Three-Tank Multi-Input Multi-Output (MIMO) system. In order to tolerate known actuator failure, a reconfiguration in control parameter/structure is made through output/state feedback. A new Proportional-Integral (PI) Reconfigurable Controller (RC) design is proposed for servo tracking problem using Singul...