Using Simulink

Using the sim Command

The full syntax of the command that runs the simulation is

• [t,x,y] = sim(model, timespan, options, ut);
  

Only the model parameter is required. Parameters not supplied on the command are taken from the Simulation Parameters dialog box settings.

For detailed syntax for the sim command, see the documentation for the sim command. The options parameter is a structure that supplies additional simulation parameters, including the solver name and error tolerances. You define parameters in the options structure using the simset command (see simset). The simulation parameters are discussed in The Simulation Parameters Dialog Box.

Using the set_param Command

You can use the set_param command to start, stop, pause, or continue a simulation, or update a block diagram. The format of the set_param command for this use is

• set_param('sys', 'SimulationCommand', 'cmd')
  

where 'sys' is the name of the system and 'cmd' is 'start', 'stop', 'pause', 'continue', or 'update'.

Similarly, you can use the get_param command to check the status of a simulation. The format of the get_param command for this use is

• get_param('sys', 'SimulationStatus')
  

Simulink returns 'stopped', 'initializing', 'running', 'paused', 'updating', 'terminating', and 'external' (used with Real-Time Workshop).

Running a Simulation Programmatically

Analyzing Simulation Results