LeeE wrote: > Thanks for your comments - they fit with what I'm finding & > thinking. > > Sure, in piloted aircraft takeoff is handled by the pilot, who is > able to cope with a wide range of possible failures at this > critical phase of flight, but I'm trying to work towards a UAV > control framework, from takeoff roll to landing stop, so that's why > I'm messing about with automated takeoffs, landings and scripted > flight etc. > > I also find auto takeoffs, landings and scripted flight useful for > general FDM config & controller tuning for piloted aircraft - it > eliminates variations due to the pilot, in this case me:) > > LeeE > Well, the most simple thing you could do to make your control an adaptive one, is to play with the feedback gain. In situations where large control inputs are more prominent (slow flight, high AOA), the loop gain will be higher and the control will be 'stronger' but more susceptible to end-value oscillation. With normal ascent/cruise flight (higher airspeeds, low AOA situations), the loop gain will be a lot lower.
Since it's a digital control scheme, it's easy to change your control parameters at run time. In essence, what you'll be needing is a fuzzy logic PID :) ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
