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

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Aeroengine Remaining Useful Life Prediction Using An Integrated Deep Feature Fusion Model 基于集成深度特征融合模型的航空发动机剩余使用寿命预测
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522561
Xingqiu Li, Hongkai Jiang
{"title":"Aeroengine Remaining Useful Life Prediction Using An Integrated Deep Feature Fusion Model","authors":"Xingqiu Li, Hongkai Jiang","doi":"10.1109/ICMAE52228.2021.9522561","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522561","url":null,"abstract":"Aeroengine plays a significant role in advanced aircrafts. Predictive maintenance can enhance the safety and security, as well as save amounts of costs. Remaining useful life (RUL) prediction can help make a scientific maintenance schedule. Therefore, an integrated deep feature fusion model is proposed for aeroengine RUL prediction. Firstly, a nonnegative sparse autoencoder (NSAE) is applied for unsupervised deep feature fusion. Secondly, gated recurrent unit (GRU) is stacked upon the NSAE for temporal feature fusion to model the aeroengine degradation process by its powerful long term dependency learning ability. Finally, an integrated deep feature fusion model with NSAE and GRU is globally finetuned for RUL prediction. A simulated turbofan engine dataset is used to verify the effectiveness, and the results suggest that the proposed method is able to accurately predict the RUL of each test unit.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"17 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":"115123798","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
A New Two-Step Calibration Method for Structured Light Systems Using Block Gages 基于块规的结构光系统两步标定新方法
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522406
S. Elmenshawy, A. Khalil, M. A. Younes
{"title":"A New Two-Step Calibration Method for Structured Light Systems Using Block Gages","authors":"S. Elmenshawy, A. Khalil, M. A. Younes","doi":"10.1109/ICMAE52228.2021.9522406","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522406","url":null,"abstract":"The calibration process is a crucial step for measuring systems due to their inherent errors and tendency to drift over time. Block gages are one of the most widely used calibrators. Advanced optical systems are continuously being developed to cope with the challenge of reconstructing different object dimensions with minimum error, cost, and time. In the present study, a two-step calibration method for structured light systems (SLSs) is proposed. A calibration pattern and set of stepped block gages are used to calibrate the SLS in the first and second steps respectively. Using block gages opens the prospects for SLSs to be more widely used in several metrological applications. The calibration curve for a SLS is obtained using the proposed method. The proposed calibration method was validated by reconstructing a test object and evaluating its size. Experimental results show the effectiveness of the proposed method. Using the proposed calibration method, measurement error was significantly reduced by 71%.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"214 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":"121277519","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
Research on Geometric Transmission Precision Experiment for FT Pin-Cycloid Transmission FT针针摆线传动几何传动精度实验研究
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522532
Liang Xuan, Xuan Yang, Wenxiong Hong, T. Guan, Hengheng Jiang
{"title":"Research on Geometric Transmission Precision Experiment for FT Pin-Cycloid Transmission","authors":"Liang Xuan, Xuan Yang, Wenxiong Hong, T. Guan, Hengheng Jiang","doi":"10.1109/ICMAE52228.2021.9522532","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522532","url":null,"abstract":"Pin-Cycloid planetary reducer is mostly used in high precision transmission. It has extremely strict requirements on transmission accuracy. Transmission accuracy and rotation error measurement are important experimental parameters for the pin-cycloid planetary reducer transmission performance. In this paper, the experimental table and related transmission components are designed according to the FT455 reducer relevant parameters. The transmission precision and the rotation error of the whole prototype are tested and the results of the experiment are analyzed. At the same time, it is proved that the calculation procedure of the transmission precision and the rotation error for the FT pin-cycloid transmission are correct.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"43 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":"126933460","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
Influence of Resonator Configuration on Band Gap Range in Acoustic Metamaterials 谐振腔结构对声学超材料带隙范围的影响
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522503
R. Ahmed, Hossain Ahmed
{"title":"Influence of Resonator Configuration on Band Gap Range in Acoustic Metamaterials","authors":"R. Ahmed, Hossain Ahmed","doi":"10.1109/ICMAE52228.2021.9522503","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522503","url":null,"abstract":"In recent years study acoustic metamaterials have found great attention due to its enormous ability to guide and manipulate elastic wave in a medium. Frequency bandgap is a great feature that can be achieved by acoustic metamaterials. The bandgap is the frequency range at which the elastic wave doesn’t propagate through the medium. In another word, the frequency band gap offers wave isolation ability for a structure. An acoustic metamaterial usually consists of resonators and a host media. The frequency bandgap is mainly the result of brag scattering in the structure. The orientation and geometry of resonators in a unit cell possess a great influence on brag scattering. This study is dedicated to understanding the influence of resonators volume percentage in the frequency bandgap. Several resonator geometries of two different combinations are studied. Finally, comparing the outcome from both the combinations, a claim is made regarding the effect of volume fraction on frequency band gaps.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"135 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":"117343629","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
Analysis of the Flow Features and Evaluation of the Aerodynamic Characteristics of the NASA X-59 Low Boom Demonstrator NASA X-59低爆臂演示机流动特性分析及气动特性评估
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522549
Alexandra V. Belchihina, A. Kazhan, Dmitry I. Gilyazev, S. Kuzin
{"title":"Analysis of the Flow Features and Evaluation of the Aerodynamic Characteristics of the NASA X-59 Low Boom Demonstrator","authors":"Alexandra V. Belchihina, A. Kazhan, Dmitry I. Gilyazev, S. Kuzin","doi":"10.1109/ICMAE52228.2021.9522549","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522549","url":null,"abstract":"The paper presents the calculation results of the flow features and longitudinal aerodynamic characteristics of the NASA X-59 QueSST low boom demonstrator. When developing a perspective supersonic civil aircraft, it is necessary to apply reliable methods for calculating aerodynamic characteristics. It is important to work out the methodological basis of calculation. The methodological basis of the research consisted in the use of modern computational gas dynamics methods and algorithms for calculating the sonic boom propagation to evaluate aircraft aerodynamic and environmental characteristics. Steady-state Reynolds-averaged Navier-Stokes equations closed by the SST turbulence model were solved. As a result, the flow patterns were obtained, the features of the flow around the aerodynamic configuration were revealed, and the aerodynamic characteristics were estimated.","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":"130458634","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
Features of Modeling and Research of the Movement of the Landing Vehicle at the Time of Approach to the Surface 着陆器接近地面时运动的建模特点与研究
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522450
V. Koryanov, L. Richier, Danhe Chen, Lang Shuobin
{"title":"Features of Modeling and Research of the Movement of the Landing Vehicle at the Time of Approach to the Surface","authors":"V. Koryanov, L. Richier, Danhe Chen, Lang Shuobin","doi":"10.1109/ICMAE52228.2021.9522450","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522450","url":null,"abstract":"The main task facing the designers of descent vehicles for new missions is to ensure the deceleration of the descent vehicle during descent from very high values to acceptable when approaching the surface. It is proposed to use inflatable braking devices for such a landing. The main advantage of such devices is the possibility of using such a device for braking throughout the entire movement from entering the atmosphere to the moment of contact. This significantly reduces the weight of the braking device. This article discusses the features of modeling and processing of results for modeling the movement of a descent vehicle with an inflatable braking device. An inflatable braking device is used for braking in the planet's atmosphere. This article examines the final stage of the descent vehicle's movement, practically near the surface of the planet.","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":"131924505","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
Study on Heat Release Characteristics of Sounding Device Based on Improved Carbon Fiber 改良碳纤维探空装置放热特性研究
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522397
Yanfeng Chen, Bingning Jin, Haobo Qi, Zhiren Deng, Chi Ma, Yu Liao
{"title":"Study on Heat Release Characteristics of Sounding Device Based on Improved Carbon Fiber","authors":"Yanfeng Chen, Bingning Jin, Haobo Qi, Zhiren Deng, Chi Ma, Yu Liao","doi":"10.1109/ICMAE52228.2021.9522397","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522397","url":null,"abstract":"In the experimental study of pressure oscillation in combustion instability of solid rocket motor, the thermoacoustic effect of carbon fiber can be used to generate a large amplitude of pressure oscillation. However, the traditional carbon fiber cannot work stably for a long time with large heat release power. Therefore, this study focuses on improving the working time and heat release power of carbon fiber, and the effect of the morphology of carbon fiber on heat release characteristics is studied. Firstly, the heat release characteristics of woven and non-woven carbon fiber are simulated and analyzed. Secondly, the sounding device based on the heat release of carbon fiber are established. The influence of different diameters (12 k, 36 k, 48 k, 64 k) of woven carbon fiber yarns on the heat release characteristics are studied. Finally, the heat release characteristics of woven and non-woven carbon fibers under air and nitrogen atmosphere are compared, respectively. The results show that the stable working time and heat release power of woven carbon fiber yarns in nitrogen atmosphere are higher than those of non-woven counterparts in air. The working time of woven carbon fiber yarns in air is about 4.21 times longer, and the heat release power is about 5.5 times higher than that of non-woven carbon fiber yarns.","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":"132994319","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
[Copyright notice] (版权)
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/icmae52228.2021.9522522
{"title":"[Copyright notice]","authors":"","doi":"10.1109/icmae52228.2021.9522522","DOIUrl":"https://doi.org/10.1109/icmae52228.2021.9522522","url":null,"abstract":"","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"291 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":"116776473","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
Cooperative Optimal Guidance Law with Simultaneous Attack and Impact Angle Constraint Using Linear Pseudospectral Model Predictive Control 基于线性伪谱模型预测控制的同时攻击和冲击角约束的协同最优制导律
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522424
Shilei Zhao, W. Chen, Liang Yang
{"title":"Cooperative Optimal Guidance Law with Simultaneous Attack and Impact Angle Constraint Using Linear Pseudospectral Model Predictive Control","authors":"Shilei Zhao, W. Chen, Liang Yang","doi":"10.1109/ICMAE52228.2021.9522424","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522424","url":null,"abstract":"This paper aims at developing a nonlinear cooperative optimal guidance law for multiple missiles to simultaneously attack a maneuvering target with relative impact angle constraint. The guidance law is based on the recently developed linear pseudospectral model predictive control (LPMPC), in which the nonlinear dynamics is linearized around the nominal state and then discretized at the support points. This procedure converts the nonlinear optimal control problem with undetermined terminal time to a quadratic programming problem, the optimizing variables of which are the control variations at the support points and terminal time. Then, the optimal improvement can be successfully derived by iteratively solving the resulting problem in an analytical manner. In the implementation, the initial guess is provided by an optimal guidance law with constraint on one-to-one impact angle. The accuracy, optimality, and efficiently of the proposed guidance law is investigated by a nonlinear two-dimensional intercept simulation. It is also shown that the consistency of impact time is can also be ensured in comparison with typical cooperative guidance law only imposing the impact angle.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"70 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":"122019362","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
Research on the Internal Ballistic Performance Prediction of Solid Rocket Motor Based on Monte Carlo 基于蒙特卡罗的固体火箭发动机内弹道性能预测研究
2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI: 10.1109/ICMAE52228.2021.9522461
Qiang Cai, Wenjie Liu, Dong Li, Jiahui Luo
{"title":"Research on the Internal Ballistic Performance Prediction of Solid Rocket Motor Based on Monte Carlo","authors":"Qiang Cai, Wenjie Liu, Dong Li, Jiahui Luo","doi":"10.1109/ICMAE52228.2021.9522461","DOIUrl":"https://doi.org/10.1109/ICMAE52228.2021.9522461","url":null,"abstract":"Due to the influence of internal factors and external environmental factors, the internal ballistic performance of solid rocket motors (SRM) shows certain deviation during its production and working. In order to describe the internal ballistic performance more accurately, a Monte Carlo method-based internal ballistic prediction and analysis method is proposed, and compared with the traditional limit deviation method. First, a simulation model of internal ballistics was established. Then according to the probability distribution law of the input factors, the simulation was carried out. The results show that under the premise of the same input deviation boundary, the probabilistic method can effectively reduce the dispersion of the internal ballistic performance parameters. Finally, according to the established internal ballistic probabilistic model, the sensitivity of the specific impulse to the influencing parameters was analyzed, and the degree of influence of each parameter to the specific impulse was obtained.","PeriodicalId":161846,"journal":{"name":"2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"10 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":"123754642","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
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