International Journal of Micro Air Vehicles最新文献_第2页

Co-TS: Design and Implementation of a 2-UAV Cooperative Transportation System 2-UAV协同运输系统的设计与实现

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293231158443

Qianli Weng, Guanming Liu, Pei Zhou, Haoran Shi, Kai Wen Zhang

{"title":"Co-TS: Design and Implementation of a 2-UAV Cooperative Transportation System","authors":"Qianli Weng, Guanming Liu, Pei Zhou, Haoran Shi, Kai Wen Zhang","doi":"10.1177/17568293231158443","DOIUrl":"https://doi.org/10.1177/17568293231158443","url":null,"abstract":"UAV application research has attracted more and more attention of researchers. However, in the field of UAV transportation, especially in the case of multi-UAV cooperation, there is little research or design on the overall system of multi-UAV cooperative transportation due to the complexity of the task and many factors need to be considered. In this paper, we first introduce a 2-UAV cooperative transportation task scenario and we call it Co-TS. Then according to the scenario, we design a task planning system, which describes the entire process of 2-UAV performing transportation tasks; in order to solve the design complexity of this UAV upper-layer software, we propose a model architecture of 2-UAV transportation application, design the functions of each module and analyze the relationship between modules in the model architecture; in addition, to realize the correct execution of the 2-UAV cooperative transportation task, the task execution is divided into four states which include preparation, rising, forwarding, and landing states, and the corresponding cooperative transportation control flow algorithm is designed for four states. Finally, we develop this system and conduct experiments. The quantitative and qualitative results demonstrate the effectiveness of our method.","PeriodicalId":49053,"journal":{"name":"International Journal of Micro Air Vehicles","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41701543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Kinematic modeling and analysis of transmission mechanism with joint clearance for flapping wing micro aerial vehicle 扑翼微型飞行器带关节间隙传动机构运动学建模与分析

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293231179945

Xin Fang, Jianghao Wu, Feng Du

引用次数: 0

A data-driven predictive maintenance model to estimate RUL in a multi-rotor UAS 一种用于估计多旋翼无人机RUL的数据驱动预测维修模型

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293221150171

Erkan Caner Ozkat, O. Bektas, Michael Juul Nielsen, A. la Cour-Harbo

{"title":"A data-driven predictive maintenance model to estimate RUL in a multi-rotor UAS","authors":"Erkan Caner Ozkat, O. Bektas, Michael Juul Nielsen, A. la Cour-Harbo","doi":"10.1177/17568293221150171","DOIUrl":"https://doi.org/10.1177/17568293221150171","url":null,"abstract":"Unmanned Aircraft Systems (UAS) has become widespread over the last decade in various commercial or personal applications such as entertainment, transportation, search and rescue. However, this emerging growth has led to new challenges mainly associated with unintentional incidents or accidents that can cause serious damage to civilians or disrupt manned aerial activities. Machine failure makes up almost 50% of the cause of accidents, with almost 40% of the failures caused in the propulsion systems. To prevent accidents related to mechanical failure, it is important to accurately estimate the Remaining Useful Life (RUL) of a UAS. This paper proposes a new method to estimate RUL using vibration data collected from a multi-rotor UAS. A novel feature called mean peak frequency, which is the average of peak frequencies obtained at each time instance, is proposed to assess degradation. The Long Short-Term Memory (LSTM) is employed to forecast the subsequent 5 mean peak frequency values using the last 7 computed values as input. If one of the estimated values exceeds the predefined 50 Hz threshold, the time from the estimation until the threshold is exceeded is calculated as the RUL. The estimated mean peak frequency values are compared with the actual values to analyze the success of the estimation. For the 1st, 2nd, and 3rd replications, RUL results are 4 s, 10 s, and 10 s, and root mean square error (RMSE) values are 3.7142 Hz, 1.4831 Hz, and 1.3455 Hz, respectively.","PeriodicalId":49053,"journal":{"name":"International Journal of Micro Air Vehicles","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46409796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of fuselage arm cross-section on the aerodynamic and aeroacoustic performance of quadcopter unmanned aerial vehicles: A numerical investigation 机身臂横截面对四旋翼无人机气动和气动声学性能的影响：数值研究

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293231200281

Jizhou Liu, Li Ming, Kaimin Yang, Gao Lei

{"title":"Influence of fuselage arm cross-section on the aerodynamic and aeroacoustic performance of quadcopter unmanned aerial vehicles: A numerical investigation","authors":"Jizhou Liu, Li Ming, Kaimin Yang, Gao Lei","doi":"10.1177/17568293231200281","DOIUrl":"https://doi.org/10.1177/17568293231200281","url":null,"abstract":"This paper investigates the influence of the fuselage arm cross-section shape on the aerodynamic and aeroacoustic performance of quadcopter Unmanned Aerial Vehicles in hover state by numerical simulation. The unsteady simulations of the flow field around one generic two-blade rotor and one fuselage arm are conducted by the Reynolds Averaged Navier-Stokes solver with the [Formula: see text] SST turbulence model. The total thrust forces and the sound pressure level spectra of five fuselage arm cross-section shapes with the same cross-section area are simulated and compared. Results show that the fuselage arm with a square cross-section has the highest aerodynamic performances for all the tested speeds of rotation. The fuselage arm with a circular cross-section ranks second in aerodynamic performance. However, it has the best aeroacoustic performance. The other three tested cross-section shapes show less thrust forces and higher sound pressure levels at the blade passing frequencies than the circular cross-section, which are not optimal neither aerodynamically nor aeroacoustically.","PeriodicalId":49053,"journal":{"name":"International Journal of Micro Air Vehicles","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44327143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seeing with sound; surface detection and avoidance by sensing self-generated noise 用声音看；通过感应自生噪声进行表面探测和规避

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293221148377

S. Wilshin, Stephen M. Amos, R. Bomphrey

{"title":"Seeing with sound; surface detection and avoidance by sensing self-generated noise","authors":"S. Wilshin, Stephen M. Amos, R. Bomphrey","doi":"10.1177/17568293221148377","DOIUrl":"https://doi.org/10.1177/17568293221148377","url":null,"abstract":"Here, we demonstrate obstacle and secondary drone avoidance capability by quadcopter drones that can perceive and react to modulation of their self-generated acoustic environment when in proximity to surfaces. A ground truth for the interpretation of self-noise was established by measuring the intrinsic, three-dimensional, acoustic signature of a drone in an anechoic chamber. This was used to design sensor arrangements and machine learning algorithms to estimate the position of external features, obstacles or another drone, within the environment. Our machine learning approach took short segments of recorded sound and their Fourier transforms, fed these into a convolutional neural network, and output the location of an obstacle or secondary drone in the environment. The convolutional layers were constructed with a suitable topology that matched the physical arrangement of the sensors. Our surface detection and avoidance algorithms were refined during tethered flight within an anechoic chamber, followed by an exercise in free flight without obstacle avoidance, and finally free flight obstacle detection and avoidance. Our acoustic sense-and-avoid capability extends to vertical and horizontal planar surfaces and tethered secondary drones.","PeriodicalId":49053,"journal":{"name":"International Journal of Micro Air Vehicles","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47214646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AD-YOLOv5s based UAV detection for low altitude security ad - yolov5型无人机低空安全探测

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293231190017

Yuanfeng Shang, Chang Liu, Dawei Qiu, Zixuan Zhao, Ruikang Wu, Shuyuan Tang

{"title":"AD-YOLOv5s based UAV detection for low altitude security","authors":"Yuanfeng Shang, Chang Liu, Dawei Qiu, Zixuan Zhao, Ruikang Wu, Shuyuan Tang","doi":"10.1177/17568293231190017","DOIUrl":"https://doi.org/10.1177/17568293231190017","url":null,"abstract":"UAV (Unmanned Aerial Vehicle) black flight at low altitude could cause serious safety risks. Consequently, it is crucial to detect and manage low altitude small UAVs. The existing methods of low altitude small UAV detection suffer from problems such as high false alarm rate, and poor real-time performance. In order to solve the above problems, we present a novel approach, named AD-YOLOv5s, to achieve low altitude small UAV detection with high precision and high real-time performance. Firstly, the feature enhancement method is used to expand the dataset. We optimize the model feature fusion, the prediction head structure, and the loss function. Based on the CBAM (Convolutional Block Attention Module) attention mechanism, feature enhancement is performed to improve the detection accuracy. Secondly, the ghost module and depthwise separable convolution are used to reduce the number of parameters of the model, and we propose the method of lightweight design of model to improve the detection speed. Compared with the YOLOv5s model, the experiment result shows that our proposed AD-YOLOv5s model improves the value of mAP by 2.2% and the value of Recall by 1.8%, reduces the value of GFLOPs by 29.9% and parameters by 38.8%, and achieves 27.6 FPS when the proposed model deploy on a low-cost edge computing device (jetson nano).","PeriodicalId":49053,"journal":{"name":"International Journal of Micro Air Vehicles","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43041483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of drag coefficient for a quadrotor model 四旋翼模型的阻力系数评估

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293221148378

G. Hattenberger, M. Bronz, Jean-Philippe Condomines

引用次数: 4

An investigation on the structural vibrations of multi-rotor passenger drones 多旋翼无人机结构振动研究

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293231199097

Kejing Chen, Wei Meng, Jinhan Wang, Kun Liu, Zhenbo Lu

引用次数: 0

Flight dynamics model identification of a meso-scale twin-cyclocopter in hover 中尺度双旋翼直升机悬停飞行动力学模型辨识

4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2023-01-01 DOI: 10.1177/17568293231206943

Carl Runco, Moble Benedict

引用次数: 0

An experimental study of the unsteady vortex structures of a clapping-wing micro air vehicle 拍板翼微型飞行器非定常涡结构的实验研究

IF 1.4 4区工程技术

International Journal of Micro Air Vehicles Pub Date : 2022-01-01 DOI: 10.1177/17568293221125846

Yanwei Zhang, Zhonglai Wang

引用次数: 1