Perturbation Rejection Controller Design for UAV's Control Surfaces

This paper will discuss on strategies in designing a perturbation rejection controller for UAV control surfaces. It begins with identifying the natural characteristic of the control surfaces, then the design of the controller and finally the implementation of the controller. The control surfaces were modeled with a first order transfer function with the fitting percentage over 88% and the controller was designed using suitable pole placement with integrator and feedback gain method. The results show that the controller was successfully implemented into a microcontroller while maintaining the settling time characteristic of the open loop model and with a damping ratio of 0.707. The implemented controller was tested and proven the ability to reject perturbation by evaluating the force acting on the control surface.