Towards a State Based Control Architecture for Large Telescopes: Laying a Foundation at the VLT
Robert Karban, Nick Kornweibel, Daniel L. Dvorak, Michel D. Ingham, David Wagner · 2011
Large telescopes are characterized by a high level of distribution of control-related tasks and will feature diverse data flow patterns and large ranges of sampling frequencies; there will often be no single, fixed serverclient relationship between the control tasks. The architecture is also challenged by the task of integrating heterogeneous subsystems which will be delivered by multiple different contractors. Due to the high number of distributed components, the control system needs to effectively detect errors and faults, impede their propagation, and accurately mitigate them in the shortest time possible, enabling the service to be restored. The presented Data-Driven Architecture is based on a decentralized approach with an end-to-end integration of