WAVEFORM RELAXATION FOR THE SIMULATION OF COMPLEX HYBRID SYSTEMS IN SCICOS

The Waveform Relaxation methods are a family of techniques for solving large systems of ordinary differential equations. They are based on the partitioning of a main system into weakly coupled subsystems. The subsystems are then solved independently, either sequentially or in parallel, and the coupling is realized by an iterative procedure. These techniques have been efficiently applied for the simulation of large problems arising from electrical network modelling. We propose in this paper an application of these methods to the simulation of complex hybrid systems arising from industrial applications. This application is performed with the capabilities of Scicos, a toolbox of the scientific computing software ScicosLab for the modelling and simulation of hybrid systems. For this purpose we have developed new Scicos blocks and a new simulation procedure for managing the events and the reconfigurations that events trigger during the integration of complex hybrid systems with a Waveform Relaxation method.