Explanipedia

Design and Experimental Study of a Flapping–Twist Coupled Biomimetic Flapping-Wing Mechanism Open

Rui Meng, Bifeng Song, Jianlin Xuan, Yugang Zhang · 2025

Medium and large-sized birds exhibit remarkable agility and maneuverability in flight, with their flapping motion encompassing degrees of freedom in flapping, twist, and swing, which enables them to adapt effectively to harsh ecological en…

Fruit-Fly-Optimized Weighted Averaging Algorithm for Data Fusion in MEMS IMU Array Open

Ting Zhu, Gao Peng, Jianping Li, Jianlin Xuan, Jingbei Tian · 2025

The weighted averaging algorithm is a widely adopted high-efficiency data fusion approach for micro-electro-mechanical system (MEMS) inertial measurement unit (IMU) array, where the configuration of weighting coefficients plays a critical …

Improved Scaling Law for Bio-Inspired Flapping Micro Air Vehicles Open

Liu Dr. Liu, Jianlin Xuan, Yugang Zhang, Bifeng Song, X. Liu , et al. · 2025

A Review on the Inertial Measurement Unit Array of Microelectromechanical Systems Open

Jianlin Xuan, Ting Zhu, Gao Peng, Feng Sun, Dawei Dong · 2024

In recent years, microelectromechanical systems (MEMS) technology has developed rapidly, and low precision inertial devices have achieved small volume, light weight, and mass production. Under this background, array technology has emerged …

Analysis of the integrated pattern of hoverable flapping wing micro-air vehicle Open

Minghao Zhang, Bifeng Song, Xiaojun Yang, Xinyu Lang, Jianlin Xuan , et al. · 2024

Flying creatures, such as insects and hummingbirds, display superior flight capabilities that have inspired the development of Flapping-Wing Micro Air Vehicles (FWMAVs). Although these vehicles have achieved certain milestones, integrating…

Analytical prediction and analysis of the detent force with the feedback harmonics for the direct drive motion system Open

Xiaojun Yang, Anyu Shi, Jianlin Xuan, Zhaohui Yang · 2023

In the direct drive motion system, there are obvious feedback harmonics caused by the various disturbances, which have important influence on the thrust characteristics of the permanent magnet synchronous linear motor (PMSLM). This paper p…

A UAV Wind Field Perception System Inspired by Biological Perception Open

Liu Liu, Bifeng Song, Weigang An, Xiaojun Yang, Jianlin Xuan · 2023

People have raised their expectations for UAV performance due to the widespread use of UAVs in both military and non-military settings. One of the most significant fields of research right now is how to enhance UAVs’ endurance capabilities…

Design and Verification of a Large-Scaled Flapping-Wing Aircraft Named “Cloud Owl” Open

Rui Meng, Bifeng Song, Jianlin Xuan, Xiaojun Yang · 2023

The bionic flapping-wing aircraft has the advantages of high flexibility and strong concealment; however, in the existing flapping-wing aircraft, the platform performance is influenced by the payload capacity, endurance, and durability; ad…

Calculation and analysis of the unbalanced magnetic thrust for the linear motor drive motion system Open

Xiaojun Yang, Jianlin Xuan, Zhaohui Yang · 2023

The unbalanced magnetic thrust caused by the mover eccentricity for the linear motor drive motion system is analytically represented. Firstly, the relative complex magnetic permeability function is introduced to represent the effects of th…

Influence of the Machining Process on the Thrust Force and Mechanical Characteristics for the Direct Drive System Open

Xiaojun Yang, Junying Li, Jianlin Xuan, Wanhua Zhao · 2022

This paper investigates the effects of the machining process on the thrust force and mechanical characteristics for the direct drive feed system driven by the flat permanent magnet synchronous linear motor (PMSLM) in machine tools consider…

Numerical investigation of an insect-scale flexible wing with a small amplitude flapping kinematics Open

Yueyang Guo, Wenqing Yang, Yuanbo Dong, Jianlin Xuan · 2022

To maintain flight, insect-scale air vehicles must adapt to their low Reynolds number flight conditions and generate sufficient aerodynamic force. Researchers conducted extensive studies to explore the mechanism of high aerodynamic efficie…

The Progress of Aerodynamic Mechanisms Based on Avian Leading-Edge Alula and Future Study Recommendations Open

Han Bao, Bifeng Song, Wenqing Yang, Jianlin Xuan, Dong Xue · 2021

Birds in nature have many unique devices to help them acquire excellent flight abilities under various complex flight conditions. One of the unique devices is the leading-edge alula, located at the junction of the arm wing and the hand win…

Experimental Study on Flexible Deformation of a Flapping Wing with a Rectangular Planform Open

Wenqing Yang, Jianlin Xuan, Bifeng Song · 2020

A flexible flapping wing with a rectangular planform was designed to investigate the influence of flexible deformation. This planform is more convenient and easier to define and analyzed its deforming properties in the direction of spanwis…

Active Disturbance Rejection Attitude Control for a Bird-Like Flapping Wing Micro Air Vehicle During Automatic Landing Open

Shaoran Liang, Bifeng Song, Jianlin Xuan · 2020

To solve the attitude control problem of bird-like flapping wing micro air vehicles (FWMAVs) during automatic landing, an active disturbance rejection control (ADRC) architecture is proposed in this paper. This control scheme takes into ac…

Active disturbance rejection attitude control for the dove flapping wing micro air vehicle in intermittent flapping and gliding flight Open

Shaoran Liang, Bifeng Song, Jianlin Xuan, Yubin Li · 2020

This paper proposes an attitude control scheme for the Dove flapping wing micro air vehicle in intermittent flapping and gliding flight. The Dove flapping wing micro air vehicle adopts intermittent flapping and gliding flight to make the w…

Optimal Sensor Placement of Health Management for Thermal Protection System on RLV Open

Jianlin Xuan, Wenhui Zhou, Yue Song · 2019

When a Reusable Launch Vehicle (RLV) travels through the atmosphere there should be strong aero heating around it, so a Thermal Protection System (TPS) would be used to protect the vehicle structures from aero thermal ablation. However, th…

Experimental Study on the Stiffness and Shape Layout of Flapping Wing Open

Wenqing Yang, XU Jian-hua, Jianlin Xuan · 2019

Flapping-wing Micro Air Vehicle (FMAV) is a kind of bionic air vehicle, which looks like natural flying creatures and flies by flapping-wings only. Now, there is an upsurge of relative research about FMAV, and one focus research domain is …

A Wind Tunnel Experimental Study on the Flexible Flapping Wing With an Attached Airfoil to the Root Open

Peng Nian, Bifeng Song, Jianlin Xuan, Wenqing Yang, Yuanbo Dong · 2019

With the purpose to improve the performance of the flexible membrane flapping wing, a kind of flapping wing with an attached airfoil to the root is designed and tested in a wind tunnel. In order to study, the actual performance improvement…

$L_{1}$ Adaptive Control of a Dual-Rotor Tail-Sitter Unmanned Aerial Vehicle With Input Constraints During Hover Flight Open

Jingyang Zhong, Bifeng Song, Yubin Li, Jianlin Xuan · 2019

The input constraints of control surfaces may lead to saturations, which could limit the achievable performance or even cause instability of vertical take-off and landing (VTOL) tail-sitter unmanned aerial vehicle (UAV). To improve flight …

A method for evaluating the wind disturbance rejection capability of a hybrid UAV in the quadrotor mode Open

Hang Zhang, Bifeng Song, Haifeng Wang, Jianlin Xuan · 2019

The wind disturbance rejection capability of a quadrotor fixed-wing hybrid unmanned aerial vehicle (QFHUAV) in the quadrotor mode is an important factor restricting its large-scale applications. In this paper, based on static equilibrium a…

Design and control of a hydraulic composite actuator for vibration simulation Open

Jianlin Xuan, Shoukun Wang, Hu Liu · 2018

A hydraulic composite actuator is developed for vibration simulation. The hydraulic scheme and control principle are introduced and an open–closed-loop iterative learning control method is proposed for control issue. A special composite cy…

Calculation Methods of Flight Performance of Flapping Wing Aircrafts Based on Energy Theory and Slipstream Theory (September 2018) Open

Jianlin Xuan, Zhaohui Yang, Peng Nian, Dayou Ma · 2018

Flight performance calculation is an important part of the micro flapping wing air vehicle design. It is used to verify whether the air vehicle design meets the performance requirements so as to make targeted improvements to the design. It…

Development of Hydraulically Driven Fatigue Testing Machine for Insulators Open

Jianlin Xuan, Shoukun Wang · 2017

The hydraulically driven fatigue testing machine is studied to simulate the vibration in the fatigue experiments for the insulators. First, hydraulic scheme and control principle are introduced. A special composite cylinder is designed, wh…

Influence of Input Parameters on Wing-Sail Solar-powered Aircraft Open

Jianlin Xuan, Min Chang, Bifeng Song · 2017

Solar-powered aircraft of wing-sail configuration employ sail tails mounted with photovoltaic (PV) modules, which could maximize solar energy absorption. The design guidelines of primary parameters for the wing-sail configuration differ si…

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