CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Architectural Homeostasis in Self-Adaptive Software-Intensive Cyber-Physical Systems

Ilias Gerostathopoulos ; Dominik Skoda ; Frantisek Plasil ; Tomas Bures ; Alessia Knauss (Institutionen för data- och informationsteknik, Software Engineering (Chalmers))
Proceedings of the European Conference on Software Architecture p. 113-128. (2016)
[Konferensbidrag, refereegranskat]

Self-adaptive software-intensive cyber-physical systems (sasiCPS) en-counter a high level of run-time uncertainty. State-of-the-art architecture-based self-adaptation approaches assume designing against a fixed set of situations that warrant self-adaptation; as a result, failures may appear when sasiCPS operate in environment conditions they are not specifically designed for. In response, we propose to increase the homeostasis of sasiCPS, i.e., the capacity to maintain an operational state despite run-time uncertainty, by introducing run-time changes to the architecture-based self-adaptation strategies according to environment stimuli. In addition to articulating the main idea of architectural homeostasis, we describe three mechanisms that reify the idea: (i) collaborative sensing, (ii) faulty component isolation from adaptation, and (iii) enhancing mode switching. More-over, our experimental evaluation of the three mechanisms confirms that allowing a complex system to change its self-adaptation strategies helps the system recover from runtime errors and abnormalities and keep it in an operational state.

Nyckelord: cyber-physical systems, software architecture; run-time uncertainty, self-adaptation strategies



Denna post skapades 2016-12-22. Senast ändrad 2017-01-19.
CPL Pubid: 246480

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för data- och informationsteknik, Software Engineering (Chalmers)

Ämnesområden

Programvaruteknik

Chalmers infrastruktur