The RT-Events Blockset is the solution to the following problems encountered in the simulation of event-based systems:

1. Very long simulation time
   a) The simulation of event-based systems require time consuming variable-step algorithms :
   
   • Limitations of actual visual simulation tools (e.g. Simulink) :
   • Code generators do not support variable-step algorithms
   • Simulation tools run in interpretative mode on a single CPU
   • Large scale and very complex models with several hundreds of diagrams for typical case
2. Imprecise hard-real-time simulation
   a) Variable time step algorithms cannot be used for hard real-time simulations
   • Limitations of discrete simulation algorithms
   • Errors for event-based systems when events occur between the sampling instants
   • Require sampling periods and/or interrupt response latencies smaller than the specified timing precision of critical events; for example, 10s for a combustion engineer
     

   b) Sampling periods smaller than 10s are not practical with actual commercial processors and I/O technologies