A simulation-based approach for the evaluation of transmission faults consequences on networked control system dependability
Résumé
The validation of network systems is mandatory to guarantee the dependability levels, that international standard impose in many safety-critical applications. Due to the complexity of networked control system architectures, it is not trivial to evaluate there dependability level. The present paper aims at bringing a contribution relative to this aspect. Since the medium is the most critical components, we focus our interest on analysing the effect of the transmission errors on the dependability parameter of an NCS. Transmission errors occur when perturbations attack the medium, and affect messages circulating on the medium. Our approach consists of modelling the functional behaviour of classical control system components, and both functional and dysfunctional behaviour of the network. Dependability parameters are evaluated by simulation.