Stability Parameter Range of a Tethered Unmanned Aerial Vehicle

Wei He,Suxia Zhang,Lei Hou

doi:10.1155/2022/4893721

Abstract

In this study, the stability parameter range of a tethered quadrotor unmanned aerial vehicle (UAV) under the action of the transient wind field is numerically analyzed, which can provide a theoretical basis for the design and application of such systems. Three factors affecting the stability of tethered UAV system are determined, namely, cable tension, cable elongation, and UAV vibration velocity, and the corresponding judgment criteria are obtained. Specifically, the priority of the three criteria sequentially decreases. According to these criteria, the stability parameter range of the tethered UAV is examined under the cable parameters such as length, diameter, and elastic modulus and the environmental parameters such as the amplitude and period of the wind field. The results show that for designing the tethered UAV structure, by reducing the length of the tethered cable and increasing its diameter and elastic modulus, the working stability of tethered UAV system can be improved.

Highlights

Research Article Stability Parameter Range of a Tethered Unmanned Aerial VehicleReceived 16 September 2021; Revised 11 November 2021; Accepted 6 December 2021; Published 4 January 2022
When a tethered unmanned aerial vehicle (UAV) encounters such a wind field during operation, the impact load imposed by the field can affect the working stability of the system
By appropriately designing the mechanical structure parameters, the motion stability of the system can be improved and the energy consumption can be reduced. erefore, it is crucial to study the structural parameters of tethered UAV system and find the parameter range of stable operation, which can provide theoretical reference for the structural and flight control design of the system

Summary

Research Article Stability Parameter Range of a Tethered Unmanned Aerial Vehicle

Received 16 September 2021; Revised 11 November 2021; Accepted 6 December 2021; Published 4 January 2022. The priority of the three criteria sequentially decreases According to these criteria, the stability parameter range of the tethered UAV is examined under the cable parameters such as length, diameter, and elastic modulus and the environmental parameters such as the amplitude and period of the wind field. Stanney and Rahn [24] proposed a theoretical model to predict the dynamic response of a tethered airship under a transient wind field, and it was found that the impact load imposed by pulse airflow on the system could cause large tension fluctuation in the cable and even lead to cable failure. A tethered quadrotor UAV in a hovering state is taken as the research object, and a numerical method is proposed to analyze its stable working parameter range under the action of transient wind fields with different amplitudes and periods. It can be seen that when the wind field amplitude is lower than

UAV rotor speed Ωi UAV inclination φ

Stable Range