Purpose–In the previous decade, unmanned aerial vehicles (UAVs) have turned into a
subject of enthusiasm for some exploration associations. UAVs are discovering applications …

Helicopters are complex high-order and time-varying nonlinear systems, strongly coupling
with aerodynamic forces, engine dynamics, and other phenomena. Therefore, it is a great …

This article presents the development of an autonomous flight control system for a small-
scale unmanned helicopter based on an online adaptive learning-based observer and …

For dual-rate state space systems with time-delay, this paper combines the auxiliary model
identification idea with the filtering technique, transforms the state space model into the …

In this paper, a new hybrid robust fault tolerant control scheme is proposed. A robust H∞
control law is used in non-faulty situation, while a Non-Singular Terminal Sliding Mode …

This paper proposes a new methodology for designing a controller for the tracking control
problem in a 2 DoF helicopter system. The control problem is formulated as a nonlinear …

In this article, a yaw channel controller with linear active disturbance rejection control is
proposed for high-performance attitude tracking of an unmanned helicopter. In this control …

The attitude control system design for an unmanned helicopter is always a challenging task
because the vehicle dynamics are highly nonlinear and fully coupled and subject to …

In this paper, a novel robust nonlinear tracking control scheme is proposed for the yaw
channel of an unmanned-aerial-vehicle helicopter that is non-affine in the control input. By a …

This paper proposes a deep reinforcement learning (deep RL) method for simultaneously
designing several notch filters in complex industrial servo systems. Notch filters are highly …