Biplane-quadrotor tail-sitter uav: Flight dynamics and control

S Swarnkar, H Parwana, M Kothari… - Journal of Guidance …, 2018 - arc.aiaa.org
This paper presents the development of 6-degrees-of-freedom (6-DOF) flight dynamics
model and nonlinear control design for a novel hybrid biplane-quadrotor unmanned aerial …

Systematic design methodology for development and flight testing of a variable pitch quadrotor biplane VTOL UAV for payload delivery

VS Chipade, M Kothari, RR Chaudhari - Mechatronics, 2018 - Elsevier
This paper discusses the conceptual design and proof-of-concept flight demonstration of a
novel variable pitch quadrotor biplane Unmanned Aerial Vehicle concept for payload …

Vision-based autonomous tracking and landing of a fully-actuated rotorcraft

M Bhargavapuri, AK Shastry, H Sinha… - Control Engineering …, 2019 - Elsevier
Autonomous landing is a challenging phase of flight for an aerial vehicle, especially when
attempting to land on a moving target. This paper presents vision-based tracking and …

Flight control of sliding arm quadcopter with dynamic structural parameters

R Kumar, AM Deshpande, JZ Wells… - 2020 IEEE/RSJ …, 2020 - ieeexplore.ieee.org
The conceptual design and flight controller of a novel kind of quadcopter are presented. This
design is capable of morphing the shape of the UAV during flight to achieve position and …

Quaternion feedback based autonomous control of a quadcopter uav with thrust vectoring rotors

R Kumar, M Bhargavapuri… - 2020 american …, 2020 - ieeexplore.ieee.org
In this paper, we present an autonomous flight controller for a quadcopter with thrust
vectoring capabilities. This UAV falls in the category of multirotors with tilt-motion enabled …

Developmental reinforcement learning of control policy of a quadcopter UAV with thrust vectoring rotors

AM Deshpande, R Kumar… - Dynamic Systems …, 2020 - asmedigitalcollection.asme.org
In this paper, we present a novel developmental reinforcement learning-based controller for
a quadcopter with thrust vectoring capabilities. This multirotor UAV design has tilt-enabled …

A novel experimental model and a drag-optimal allocation method for variable-pitch propellers in multirotors

VM Arellano-Quintana, EA Merchán-Cruz… - IEEE Access, 2018 - ieeexplore.ieee.org
This paper proposes a new mathematical model to map the rotational speed and angle of
attack (pitch) of small-size propellers typically used in multirotors and the aerodynamic thrust …

Quaternion based adaptive control for package delivery using variable-pitch quadrotors

AK Shastry, MT Bhargavapuri… - 2018 indian control …, 2018 - ieeexplore.ieee.org
Quadrotors have enormous application in the area of automated delivery systems. In such
scenarios, payload can vary with time, and cannot be tackled by traditional controllers. This …

Variable pitch control of a quadrotor using adaptive sliding mode controller

M Mosalsal, M Khodabandeh - Aircraft Engineering and Aerospace …, 2023 - emerald.com
Purpose This paper aims to describe the characteristics and modeling of the variable pitch
quadrotor. In a variable pitch quadrotor, unlike ordinary quadrotors that the force is …

Robust geometric trajectory tracking control of a variable-pitch quadrotor

AB Krishna, M Kothari - Journal of Guidance, Control, and Dynamics, 2022 - arc.aiaa.org
In this paper, a robust trajectory tracking control design of a variable-pitch quadrotor (VPQ)
under the adverse conditions of external disturbance and parametric uncertainties is …