Abstract:
The problem of system uncertainty in Helicopter flight bag online which brought by a widely variety in mathematical model have been investigated by using an improved quantitative feedback theory (QFT) method to design helicopter flight controller. Firstly, we used the H
∞ loop shaping methods to achieve the different control channel of decoupling, the multi-input multi-output problem can be changed into a single-input single-output problem. Secondly, by using the QFT approach, each single-input single-output system controller is designed to simplify the design process of QFT and improve the control effect. Finally, the method is applied in UH-60A helicopter flight control, full envelope flight controllers of the helicopter flying in the five states were also designed. Simulation results show that the method has good control effect and validity.