Quadrotor robot based on disturbance observer control

Recently, Quadrotor started to become widely known Such as the use of photography from high level. Quadrotor provide the great adventage that applied to a variety of everyday activities. But the user often face many problems, Quadrotor can't controll as user need. The major problem caused by the wind, which made its work not full effective. Thus, leading to implementation of disturbance observer (DOB) is obviously that disturbance observer can compensate the distortion and increase stability of system to perform closely with non-disturbance environment.