Hi, I have a problem which I believe could be solved using a fairly simple Trig equation, if someone can provide a solution to this I would be very greatfull..(adsbygoogle = window.adsbygoogle || []).push({});

I have an RC plane and a computer radio which allows servo travel to be adjusted exponentially

by percentage. If you imagine the output on an X-Y axis on a line graph, linear is a straight diagonal line rising from zero while expo percentages, either + or - curve it either way.

A servos output is linear in itself but due to the arc of the servo arm the output to the rudder for example falls away towards the end of the arc.

I need to find an equation (Sin?) that will allow me to determine the rate of exponential rate required for any given servo arm length to achieve an output directly proportional to control stick input.

I hope this makes sense..

Thanks,

Paul

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Equation required to calculate exponential rate

**Physics Forums | Science Articles, Homework Help, Discussion**