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The objective of this paper is to deal with a trajectory tracking of a Quad-rotor unmanned aerial vehicle (UAV). For the model uncertainty, the external disturbance and the coupling factor are considered, an active disturbance rejection control (ADRC) algorithm is introduced into the designing procedure. The aircraft dynamic model is proposed in this(More)
Three-dimensional (3D) integration and multi-level cell (MLC) are two attractive technologies to achieve ultra-high density for mass storage applications. In this work, a three-layer 3D vertical AlOδ/Ta2O5-x/TaOy resistive random access memories were fabricated and characterized. The vertical cells in three layers show good uniformity and high performance(More)
There are two critical challenges which determine the array density of 3D RRAM: 1) the scaling limit in both horizontal and vertical directions; 2) the integration of selector devices in 3D structure. In this work, we present a novel 3D RRAM structure using low-dimensional materials, including 2D graphene and 1D carbon nanotube (CNT), as the edge(More)
The quad-rotor is expected to carry out many different tasks. It is hoped that the quad-rotor can have different characteristics according to the different mission requirements. For this reason, a flight stability augmentation control system based on explicit model following with inverse model feedforward control method is proposed in this paper. This(More)
A quad-rotor unmanned aerial vehicle is an under-actuated, strong coupled nonlinear system with parameters uncertainty and unknown external aerodynamic disturbance. The trajectory tracking control system with a nested double-loops structure is designed in this paper according to the coupling characteristic between the attitude angles and translational(More)
Recently progress in sensor technology, data processing and integrated techniques has made the development of unmanned aerial vehicles (UAV) fully possible. The Eight-Rotor is a radio-controlled vehicle. It is powered by eight rotors and is capable of motion in air in six degrees of freedom. In this paper, we present the dynamic modeling of Eight-Rotor UAV(More)
A quad-rotor UAV is a typical under-actuated, strong coupled nonlinear system with parameter uncertainty and un-modeled disturbance. For the sake of tracking the desired trajectory, considering these characteristics, an Active Disturbance Rejection Control (ADRC) is introduced in this paper which divides the nested closed-loops control system into four(More)
The reliability flight property has received much attention within the aircraft control community throughout the last decades. In this paper, the fault-tolerant control technique is introduced into the attitude stability control system of a quadrotor UAV in order to compensate the influence of the actuators fault of the aircraft. This control scheme is(More)
This paper focus on the path tracking control for a eight-rotor aircraft taking into account various types of external disturbance. Controllers based on the linear adaptive disturbance rejection control (LADRC) are designed for altitude and attitude tracking. PD controllers are designed for longitudinal and lateral trajectory tracking by generating the(More)
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