Longitudinal attitude control of UAV based on fuzzy PID

Aiming at the characteristics of time-varying, nonlinear model of unmanned aerial vehicle (UAV), a fuzzy PID controller is proposed in this paper for longitudinal attitude of UAV with combination of fuzzy control algorithm and PID control algorithm. The proposed strategy is easy to be accepted and convenient for application. The fuzzy PID controller designed in this paper takes error and error change rate as input. The PID parameters are adjusted with fuzzy control rules such that the controlled object obtains a better dynamic and stable performance. The simulation results show that the designed fuzzy PID controller has the characteristics of fast response, small overshoot and small steady-state error.