2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)最新文献_第2页

Flight Dynamics Simulators of Modular Structure: Assessment of the Dynamic Characteristics of an Object 模块化结构的飞行动力学模拟器:物体动态特性的评估

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00037

Budylina Eugenia, Danilov Alexander, Garkina Irina

{"title":"Flight Dynamics Simulators of Modular Structure: Assessment of the Dynamic Characteristics of an Object","authors":"Budylina Eugenia, Danilov Alexander, Garkina Irina","doi":"10.1109/icmeas54189.2021.00037","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00037","url":null,"abstract":"Improving the modeling of the dynamics of an object of an ergatic system requires the development of rational mathematical models based on flexible modular software, design automation, testing, as well as improving methods for identifying and correcting models. With a sharp increase in the quality of computer systems, the relevance of the development of analytical methods for the study of complex dynamic systems, including for the decomposition and creation of a modular hierarchical structure, has only increased. Proceeding from this, in the work in the application to the development of aviation simulators, the criteria for evaluating the dynamic characteristics of the object by the operator during the normal functioning of the ergatic system are determined. The main attention is paid to the short-period component of the longitudinal motion. The expansion of the spatial motion into longitudinal and transverse is carried out in terms of the roots of the characteristic polynomial of the fourth order (an example is given). A graphical-analytical method for determining the roots of a characteristic polynomial has been developed; the calculation algorithm is presented (it was effectively used in the development of a number of simulators). When studying spatial motion, it is natural to divide into separate channels. The simulation characteristics of the simulators are determined based on the corresponding simulation characteristics for each of the channels. Root methods play a special role in such studies. We restrict ourselves to systems described on each of the channels by systems of ordinary differential equations. The formalization of the criteria for evaluating the dynamic characteristics of the object by the operator in the process of functioning of the ergatic system is carried out.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123502696","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

Robust Strong Tracking Cubature Kalman Filter for Attitude Estimation of Failed Spacecraft 失效航天器姿态估计的鲁棒强跟踪Cubature Kalman滤波

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00038

H. Ma, Zhen Lu, X. Zhang, W. Liao

引用次数: 0

A Local Gravity Kinematics Synchronization Clustering Algorithm 局部重力运动同步聚类算法

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00044

Liang Yan, Zhao Dongguo, Lu Xianguo, Jie Xiaoyuan, Wang Chenglin

引用次数: 0

Investigation of Afterburning Effects on the Thermal Environment of Flame Deflectors 转焰器加力燃烧对热环境影响的研究

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00033

Lu Chenyu, Liang Xiaoyang, Zhou Zhitan, Le Guigao

{"title":"Investigation of Afterburning Effects on the Thermal Environment of Flame Deflectors","authors":"Lu Chenyu, Liang Xiaoyang, Zhou Zhitan, Le Guigao","doi":"10.1109/icmeas54189.2021.00033","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00033","url":null,"abstract":"In this paper, a four-nozzle liquid oxygen (LOX)/kerosene rocket is used to analyse the afterburning effects on the thermal environment of flame deflectors. Based on the three-dimensional compressible Reynolds-Averaged Navier-Stokes (RANS) equations and the realizable k-ε turbulence model, the rocket plume model is established. A 9-species,10-steps chemistry scheme is used for the simulation of afterburning reaction. On this basis, the impinging flow fields of the rocket exhaustjet with and without chemical reaction are calculated. The results show that the afterburning reaction mainly occurs in the tail section of the plume and the near-wall region, which will obviously increase the local gas temperature. Additionally, the temperature of the mixed layer of the plume also increases due to the afterburning reaction. For the deflector, the temperature of areas under the direct impingement of the rocket plume rises by 20% after adding the afterburning reaction. Meanwhile, a high-temperature layer will be formed, which will obviously increase the overall temperature of the deflector.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123036409","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

Regeneration of vehicle catalytic converters by metal treatment system in monoliths 整车催化转化器金属处理系统的再生

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00030

Leonidas Quiroz, Jimmy W. Gallegos, Christian Montaleza, Oscar Arteaga, R. Cruz

{"title":"Regeneration of vehicle catalytic converters by metal treatment system in monoliths","authors":"Leonidas Quiroz, Jimmy W. Gallegos, Christian Montaleza, Oscar Arteaga, R. Cruz","doi":"10.1109/icmeas54189.2021.00030","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00030","url":null,"abstract":"This article focuses on the study of the regeneration of catalyst monolith metals used in gasoline vehicles, through the realization of the oxidation-reduction method at: controlled temperature, exposure time and constant flow of inert gases (N2 and H2). According to the size and shape of the monolith structure of the commercial 2-way and 3-way catalysts used for the test, rectangular samples with a weight of 4.125 g and a cubic cut with 20 mm edges were taken for the study. In addition, the emissions behavior of each of the gases after regeneration was analyzed by means of a gas analyzer incorporated directly to the reactor with the samples treated in a vehicle without catalytic converter, thus determining that through the oxidation-reduction process the species of the catalytic monolith are recovered. In this way, the catalytic process of transforming harmful emissions into harmless gases, product of the combustion processes of gasoline engines, is improved, thus reducing the environmental waste they produce after elimination. It should be noted that in simple processes, due to its ceramic structure and the presence of noble metals, its elimination is difficult.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124977833","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

Mathematical Model on the Visualization of coaxiality Error 同轴度误差可视化的数学模型

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00018

Lijie Chen

引用次数: 0

Prediction of Weld Pool Profile of Dissimilar Laser Weld Between NiTi/Ti6Al4V Via Different Interlayers 不同夹层NiTi/Ti6Al4V异种激光焊接熔池轮廓的预测

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00031

F. B. Teshome, Bei Peng, W. Ke, Fuguo Ge, X. Du, Z. Zeng

{"title":"Prediction of Weld Pool Profile of Dissimilar Laser Weld Between NiTi/Ti6Al4V Via Different Interlayers","authors":"F. B. Teshome, Bei Peng, W. Ke, Fuguo Ge, X. Du, Z. Zeng","doi":"10.1109/icmeas54189.2021.00031","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00031","url":null,"abstract":"NiTi and Ti6A14V were materials with superior properties and shared application areas while joining them with fusion weld stayed as a challenge. Solidification of excessive brittle Ti2Ni intermetallic phases and development of microcracks are the main challenges of creating weld between these alloys. Therefore, Pulsed mode welding with an offset laser was employed to develop a dissimilar weld between NiTi and Ti6A14V with the aid of Cobalt and Zirconium interlayers. The involvement of interlayers along with laser offsetting improved the mechanical properties of the joint. Tensile strength of the joints with Zirconium and Cobalt interlayers reached a maximum of 319MPa and 275MPa with a percentage elongation of 1.53% and 1.47%, while the weld without interlayer was limited to 148MPa and 0.8%. A thermal transient model with a Modified Three-Dimensional Conical volumetric heat source was employed to predict the temperature distribution and Weld-pool shape in dissimilar NiTi/Ti6Al4V weld with and without the interlayers, and a good agreement was evident between simulated and experimental results.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"28 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116720001","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

Multi-factor based analysis and statistical process control for body-in-white dimension status 白车身尺寸状态的多因素分析与统计过程控制

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00013

Yanjing Liu, Ruiting Li

{"title":"Multi-factor based analysis and statistical process control for body-in-white dimension status","authors":"Yanjing Liu, Ruiting Li","doi":"10.1109/icmeas54189.2021.00013","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00013","url":null,"abstract":"With the tremendous improvement of industrial manufacturing, the methods and technology of automobile industry have made great progress. As a significant factor determining the appearance of vehicle models, the dimension control of body-in-white (BIW) also has constantly optimization in the continuous innovation of automotive products. The dimension control of BIW is of great importance in the production process and plays a connecting role in automobile manufacturing. As for actual BIW production, not only a complete body framework is established through the assembly of stamping parts, but also the hang-on parts are preliminarily installed and matched with the body framework to form the basis for the assembly of following parts. In this study, current researches and methods of BIW dimension control in automobile industry are summarized and illustrated. Then, factors which affecting the dimension status of BIW are classified and highlighted by main types. The model and system of process control based on data analysis are established. Finally, the model and strategy are sufficiently validated by test result.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127093141","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

Analysis of Atmospheric Drag Acceleration and Engineering Realization of Space Target 空间目标大气阻力加速度分析与工程实现

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00047

Xiaobin Huang, Yan Zhang, Rui Xiao

引用次数: 1

Message from Program Chair 项目主席致辞

2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS) Pub Date : 2021-10-01 DOI: 10.1109/icmeas54189.2021.00006

引用次数: 0