[Jsbsim-matlab] Updates

[b m. <bri...@in...>]

Hi all,

Just some brief (or not so brief) updates.

  Thanks to Jon, one issue I have had is now (at least in some cases) fixed.  This was an issue with previous aircraft states being used in successive simulation runs.  If the AC model used has no FCS integrators (such as in PIDs, and possibly actuators) then the problem seems to be fixed.  However, for the time being, if there are FCS system states, then the S-Function will need to be cleared from the Matlab command line in order to have a fresh start after each run.  

At this point I want to make the project available to anyone that wants it so I'm assuming that getting it on cvs would be logical.  I'm also going to look at uploading it to Mathworks.com.

Whats next:

My intention was to be able to use this S-Function for not only flight-model and FCS system work, but also to construct systems models (apu, electrical etc.)  However, after looking at FG and JSBSim source code, it appears that in order for this to happen, it may need to become a FlightGear S-Function.  How difficult would it be to incorporate some of the FG classes into the project...kind of a FG_Lite....

A trim and linearization function. Agostino, I think you already have some code for a trim function in your MexJSBSim project?

Brian