On 9 Sep 2009, at 17:04, dave perry wrote: > I have updated and tested the vor.xml, vor2.xml in Instruments-3D/vor > as well as the century3.nas in Aircraft/Generic and the corresponding > PID controllers. I will do the same for the AltimaticIIIC used in the > SenecaII as I wrote the CenturyIII and AltimaticIIIC nasal and PID's > which are very similar to the CenturyIII. I think we will have to > change all the nasal GS arm entries.
I agree, sadly. For some devices it's clear what arming sensitivity is used (eg the KAP-140 manual says '2 to 3 dots') but for others I'm having to make a sensible guess. > I also am familiar with the kap140 > nasal, so I will update that also. I have found that the parameters > in > the PID controllers need to be optimised for each aircraft as the > plant > changes with a change in flight model optimisation. I am not using > the > normalized property. This made increasing the proportional gain > <kp> by > 5x a very good starting point for re-optimization. I will re-optimize > the Cessna 172 PID file. Okay - I don't have a strong feeling on whether using the normalised or degree property is more readable / understandable / maintainable in Nasal scripts or autopilot gains - for the KAP-140 arm logic I used the -norm property and a 50% threshold (i.e 2.5 dots), but that's partly because I wanted to test and commit now, and don't want to edit the files again when I remove the 5x factor (see your second email) I'm going to do the big jets (777, 747, 787, the airbuses, and Concorde) next. The b1900 is also mostly done, I just want to test the autopilot more before committing. James ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
