Fuzzy Neural Network PID Control Used in Individual Blade Control

In order to further reduce the vibration level of helicopters, active control technology helicopters has been extensively studied. Among them, individual blade (IBC) independently applies high-order harmonics each with an actuator, which can improve aerodynamic environment and effectively load hub. The rotor structural dynamics model based on Hamilton energy variation principle medium deformation beam theory were established firstly, dynamic inflow Leishman–Beddoes unsteady also established. finite element method direct numerical integration used calculate response determine After these, steepest descent-golden section combinatorial optimization algorithm was find parameters IBC. Based this, input fuzzy neural network PID determined, hub simulation conducted. Under effect IBC, loads could be reduced by about 60%. article gives best laws harmonic pitch their combinations. These results theoretically applied design law helicopter loads.