Hello savvy simmers,I'm trying to improve upon the performance of the autopilot in my Citation X. I find that the default plane tends to wallow through turns and overshoots pitch commands.For the most part, the Flight Director works very nicely--the problem is getting the command bars to mate up in a more precise manner as changes in the flight occur. After doing a little research, I came upon a few parameters in the autopilot section of the cfg file that would seem to affect how well this system works or doesn't work;nav_proportional_control=11.0nav_integrator_control=0.20nav_derivative_control=0.00nav_integrator_boundary=2.50nav_derivative_boundary=0.00gs_proportional_control=9.52gs_integrator_control=0.13 gs_derivative_control=0.00gs_integrator_boundary=0.70gs_derivative_boundary=0.00The question, which of these is the best way to attack the problem?

Which Citation X would this be? If it's the Eaglesoft Citation X v2... it's actually behaving exactly like the real aircraft.The values you listed won't help you.

There has been confusion over the use of these values which are known as PIDs (Proprtional-Integral-Derivative).they can appear in both the .cfg and the .air files. The ESP SDK states in relation to .air files that "PIDs are only used to aid in the handling of AI (computer) controlled aircraft." However posters have written that the values in the .cfg file do affect user (non-AI) aircraft.

Well Bill, I know I can change the values in the aircraft.cfg file for the Citation X and see different behavior. I know if I change the values in the .air file... I see no difference in behavior.So... if the aircraft.cfg shouldn't affect it... then someone at ACES forgot to tell FS that. ;)

I have no direct experience but suggest you experiment with changes in the .cfg file. http://en.wikipedia.org/wiki/PID_controller gives a guide to the general principles of PID controllers.

Read his post again... he wants the aircraft's autopilot to match the movement of the flight director. Those values aren't going to touch that. Period.In fact, I'll point out... how the actual aircraft performs has absolutely nothing to do with the autopilot controls. Nothing. How the flight director moves has nothing to do with the autopilot controls. Nothing.It's a function of the performance of the aircraft itself and isn't a simple numeric setting. Going beyond that isn't of merit without knowing which Citation X we're discussing.

Unless someone else has the exact same numbers, it is in fact the ESDG CX v2.0's values... :(

If it is... there's absolutely nothing he can do.1 - It's modeled to behave exactly as the real one does. Actual roll rate, actual commanded roll rate, etc.2 - It doesn't use any default FS settings to perform.