Currently it is not possible to start or create an ARSim instance from the Automation Studio command line, but you can do it with Runtime Utility Centers(PVITransfer) command line.
So the basic flow would be:
Build a RUC Package for ArSim with the Automation Studio command line
Create a Instruction list file for PVITransfer(RUC)
Execute the Instruction list file with PVITransfer(RUC)
This will create and start the ArSim instance
Some more hints how to do this are available here.