Monday, November 24, 2008

Dual/Triple Rates and Expo

There is a pretty good web page that describes how exponential rates work (the negative vs. positive expo on JR vs. Futaba sort of messes me up too). I also put together a quick Control Rates XLS spread sheet to graphically demonstrate how the control surface should move with various rates and expo settings for a given stick movement and to help myself visualize how the response works for setting targets on my Futaba 7CAP. I am thinking about trying to even do a 3D plot to incorporate subtle p-mixing, but that is probably overkill. For now, this allows me to visualize what I want to do to moderate response around center, but still get full range response for 3D flight. The file currently has a setting for user settings, demonstrating how to limit the beginner's tendancy to "over control", but still deliver the same initial sensitivity/response with 65% rates and 70% positive expo.




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