2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)最新文献_第8页

A Method of Obtaining Micro Newton Calibration Force 一种获取微牛顿校准力的方法

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522401

Lian Shipo, Lv Xiang

引用次数: 0

Pressure Diffusion Item to Improve Shock Robustness for Low-Diffusion Upwind Schemes 提高低扩散逆风方案冲击稳健性的压力扩散项

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522421

Shu-sheng Chen, Hua Yang, Zheng Li, Z. Gao

引用次数: 0

Gear Geometry Inspection Based on 3D Optical Scanning: Worm Wheel Case Study 基于三维光学扫描的齿轮几何形状检测:以蜗轮为例

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522366

R. Mašović, I. Čular, K. Vučković, D. Žeželj, T. Breški

{"title":"Gear Geometry Inspection Based on 3D Optical Scanning: Worm Wheel Case Study","authors":"R. Mašović, I. Čular, K. Vučković, D. Žeželj, T. Breški","doi":"10.1109/ICMAE52228.2021.9522366","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522366","url":null,"abstract":"Optical measurement methods provide fast data acquisition and the ability to evaluate the entire geometry of a scanned component. Capability of a three-dimensional optical scanning for a gear geometry inspection is presented and discussed. Due to its complex geometry and susceptibility to operating problems as a result of inaccurate manufacturing parameters, the inspection is conducted on a worm wheel. Geometrical accuracy of a scanned worm wheel model is evaluated with respect to the referent CAD model. The inspection is carried in accordance with DIN 3974 standard. Pitch deviation, profile deviation, runout deviation, and transmission errors are monitored. Transmission error numerical analysis is carried out. Scanned data is used to generate worm wheel surface model which is mated with the referent worm CAD model. Influence of various mesh sizes is investigated. Additional manufacturing errors which can significantly influence worm wheel operation are pointed out. The proposed method poses an alternative to conventional gear inspection methods which rely on inspection via coordinate measuring machines or specialized gear measuring instruments.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134546072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Numerical Modeling and Experimental Validation of a Coreless Permanent Magnet Synchronous Motor 无芯永磁同步电机的数值模拟与实验验证

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522548

Jorge Miguel Guedes Rebelo, Ricardo Emanuel Alves de Sousa, Miguel Ângelo Rodrigues Silvestre

引用次数: 0

Research on Multimodality in Aerodynamic/Stealth Airfoil Design Optimization 气动/隐身翼型设计优化中的多模态研究

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522566

Zhang Wei, Gao Zhenghong, Zhou Lin, Deng Jun, Xia Lu, Zuo Yingtao

{"title":"Research on Multimodality in Aerodynamic/Stealth Airfoil Design Optimization","authors":"Zhang Wei, Gao Zhenghong, Zhou Lin, Deng Jun, Xia Lu, Zuo Yingtao","doi":"10.1109/ICMAE52228.2021.9522566","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522566","url":null,"abstract":"The airfoil on modern fighters needs large positive moment to maintain longitudinal trim in addition to good aerodynamic and stealth performance. The novel design requirements would increase the likelihood of multimodality in design space. To address this issue, this paper uses parallel niching method to identify the existence and possible sources of multimodality in the aerodynamic and stealth shape optimizations based on a symmetrical airfoil. To isolate the instances of space multimodality, several subproblems are studied by varying the number and range of design variables, as well as positive moment constraints, respectively. The results demonstrate that the occurrences of multimodality in aerodynamic design space are highly related to positive moment constraint and ranges of design variables. Additionally, it’s found that some local minimums in aerodynamic space are very close to that of stealth space, indicating that the there’s not that large conflict between aerodynamic and stealth design under certain circumstances. This discovery may appeal a new approach of aerodynamic/stealth design of aircraft.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115741258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Review of Commonality Design for Civil Aircraft 民用飞机通用性设计综述

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522472

Yongjie Zhang, Zeng Yongqi, Cao Kang, Yang Zheng, Wenjun Dong, Dayong Dong

引用次数: 0

Research on the Working Characteristics of the Power Transmission Mechanism of a New Type of Spherical Power Source 一种新型球形电源传动机构的工作特性研究

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522374

Tengan Zou, Yu-kun Chang, Lei Zhang, Yu Zhou, Yanxia Zhou

{"title":"Research on the Working Characteristics of the Power Transmission Mechanism of a New Type of Spherical Power Source","authors":"Tengan Zou, Yu-kun Chang, Lei Zhang, Yu Zhou, Yanxia Zhou","doi":"10.1109/ICMAE52228.2021.9522374","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522374","url":null,"abstract":"The spherical power source is a new type of energy conversion device. Its design concept is to integrate the functions of the spherical engine and the generator. The fuel chemical energy can be directly and efficiently converted into electrical energy output. Its spherical structure greatly improves the utilization of the space. It can be carried by one person after miniaturization design. Therefore, it has a broad application prospect. Firstly, the structure and the working principle of the spherical power source are introduced in this paper. The profile model and the machining method of the spatial guide CAM are analyzed. Then its power transmission mechanism is simulated based on the multi-body dynamics software. The prototype of the spherical power source is manufactured. The prototype runs normally during the motor drive test. Finally, the vibration characteristics of the prototype are studied experimentally. The test vibration level is 1. All vibration data meet the requirements specified in SY/T 5641-2019 Standard. Therefore, the configuration scheme designed in this paper is feasible. However, due to certain machining error and assembly error, there is a certain mechanical shock when the power source is running. In the follow-up research, some key transmission part is necessary to design flexibly, so as to ensure the smooth operation of the power source. This paper lays the foundation of configuration design for the following research.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127032222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Light-Weight Solution for High Speed Obstacle Avoidance 高速避障的轻量化解决方案

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522547

Samuel Pool, P. Manjunath

引用次数: 0

Design and Development of An Avionics Architecture for Autonomous UAV Fleets 自主无人机机群航电体系结构设计与开发

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522365

R. Yeniceri, Emre Saldiran

{"title":"Design and Development of An Avionics Architecture for Autonomous UAV Fleets","authors":"R. Yeniceri, Emre Saldiran","doi":"10.1109/ICMAE52228.2021.9522365","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522365","url":null,"abstract":"In this work we present the design and development process of an avionics architecture for missions that require highly coordinated flight of a fleet of autonomous fixed-wing micro UAVs. Applications such as signal tracking or dynamic object tracking with multiple UAVs allow a cost-effective and minimum-risk alternative to missions which have been historically handled with manned aircraft. As such, for these specific applications, we have developed a micro-avionics architecture structured around an in-house customized open-source autopilot and an indigenous Linux based single board payload/flight management computer. The essential 5-km range telemetry and control link radio is backed up by high-power long-range IEEE 802.11n (WiFi) radio device. The redundancy of communication not only improves the reliability of the avionics architecture, but also enables the trade-off between bandwidth and power efficiency. The architecture is capable of transmitting data at rates above 200 kbps up to 4 km away from its ground station equipped with the developed miniature patch antenna tracker. The payload/flight management computer is ready to run a CSI/USB connected day-light or low-illumination infra-red camera, a USB connected software defined radio and different types of sensor payloads such as radar/lidar range sensors and RGBD cameras. Tied to this architecture, we have designed a Software-in-the-Loop (SIL) and Hardware-in-the-Loop (HIL) testing system with MAVlink communication protocol interlinking hardware to Matlab based UAV dynamic models and tracking algorithms. This system allows comprehensive simulation and testing of designed control and guidance algorithms before flight tests while minimizing cost and crash risk. We have successfully used the avionics architecture in flight tests that involve (a) system identification of flight vehicles and (b) tracking and identification of signal sources using multiple UAVs.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122258281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neural Network-Based Study on the Correlation between Exhaust Plume Images and Combustion Chamber Pressures of the Throttleable Hybrid Rocket Motor 基于神经网络的可节流混合动力火箭发动机排气羽流图像与燃烧室压力相关性研究

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522370

Guangyu Tan, H. Tian, Yuanjun Zhang, Xianzhu Jiang, Xiao-qing Gu

{"title":"Neural Network-Based Study on the Correlation between Exhaust Plume Images and Combustion Chamber Pressures of the Throttleable Hybrid Rocket Motor","authors":"Guangyu Tan, H. Tian, Yuanjun Zhang, Xianzhu Jiang, Xiao-qing Gu","doi":"10.1109/ICMAE52228.2021.9522370","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522370","url":null,"abstract":"The relation between exhaust plume images and combustion chamber pressures of the throttleable hybrid rocket motor has not gained much attention. A neural network method is proposed to explore the correlation between exhaust plume images and combustion chamber pressures. Based on the idea of classification, we classified the combustion chamber pressures according to a piecewise function. The image of each frame of the input video was matched with each stage of the combustion chamber pressure to establish their corresponding relation with the machine learning method. In the training process, the pressure data were used as labels to match the corresponding exhaust plume images. In the testing process, after the input of the video, the combustion chamber pressures were automatically obtained according to the images. The results show that the exhaust plume images of different combustion chamber pressures present significant differences. Besides, with the images of exhaust plume as input, the test results of the neural network method show an 86.40% accuracy in the identification of the combustion chamber pressures.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122284505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0