An Integrated, Modular Simulation System for Education ... - Cal Poly

Real Time WorkshopTo generate the final executable program a Simulink model must include thesource code for all of the user supplied S-functions. Any custom functions that will run inthe Simulink environment can be included in the auto-coding to run in a stand aloneapplication.Stand-alone CodeThe real-time workshop code generator creates an executable that runs in the 32bit DOS window of Windows 98. Using the TCP/IP connection, two forms of IO arebeing provided that Mathworks didn t supply. There was no provision for keyboard inputto a real-time workshop application so modifying the program as it was running waslimited to using the supplied external mode interface which allows one process to runSimulink coupled to another process running the real time application. This allowsSimulink to be linked with running simulation code providing the ability change controlparameters inside the simulation while the program is running. The user simply changesthe values in the Simulink block and the value is immediately updated in the runningprogram. This allows different control gain sets to be used during the simulation orparameters such as time delay to be added to the simulation to demonstrate the resultingdeterioration in handling qualities. This also allows a separate computer to provide ainstructor station to control pilot in the loop simulations. Graphics is the second formof output that is not supported by the RTW coder. Graphics has been in two forms: 1) aninterface to the World Up VR viewer was adapted to run through the Simulinkenvironment.and, 2) PhEagle I graphics are being added through the network capabilityusing the existing TCP/IP sockets. Since the graphics computers only require a statevector providing position and orientation information, the Simulink model can use the39