This fuzzy controller is based on C++. You can use triangle membership function or Gauss membership function or Trapezoid membership function to fuzzification the input error and error ratio, and it uses Madanni model to defuzzification . In the main function we have implemented one example which set target to 60 to verify the efficiency of this fuzzy controller, the result has proved that it does work well. If you have any questions about this, don't bother to contact me, My email address is [email protected]