2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)最新文献_第6页

Comparative Analysis of a Floating Mooring Line-Driven Platform (FMDP) Having Different Mooring Lines Patterns 浮式系泊绳驱动平台(FMDP)不同系泊绳模式的对比分析

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467658

Mamon M. Horoub, Sikandar Khan, Sajid Ali, A. M. Horoub

引用次数: 7

Derivation and Analysis of a State-Space Model for Transient Control of Liquid-Propellant Rocket Engines 液体火箭发动机瞬态控制状态空间模型的推导与分析

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467617

Sergio Pérez-Roca, N. Langlois, J. Marzat, H. Piet-Lahanier, M. Galeotta, François Farago, S. L. Gonidec

{"title":"Derivation and Analysis of a State-Space Model for Transient Control of Liquid-Propellant Rocket Engines","authors":"Sergio Pérez-Roca, N. Langlois, J. Marzat, H. Piet-Lahanier, M. Galeotta, François Farago, S. L. Gonidec","doi":"10.1109/ICMAE.2018.8467617","DOIUrl":"https://doi.org/10.1109/ICMAE.2018.8467617","url":null,"abstract":"A dynamic model of a liquid-propellant rocket engine has been developed in this paper, with the future purpose of meeting the more demanding requirements of rocket-engines control forced by the new reusability scenarios. This transientrepresentative modelling approach has been carried out in two phases: initially the purely thermodynamic modelling and subsequently its adaptation to the control framework. The former was tackled by building first a representative simulator of the well-known Vulcain engine. The differential equations considered come from mass, momentum and energy conservation equations and from turbo-pump dynamics. In general, macroscopic behavior at component and system levels is considered. Once this simulator started to provide satisfactory results, it was translated into a state-space model for control by symbolically joining all components’ equations, which led to a set of differential equations capturing system’s global behaviour. Its states consist in mass flows, pressures, temperatures and shaft rotational speeds. The available actuators are five continuously-controllable valves, one binary igniter and one binary starter. That combination of continuous and discrete features forces the definition of a hybrid system in the control sense. The analysis of its dynamic characteristics points to a good controllability of thrust via the gas-generator injection valves, and of mixture ratio via the turbines’ flow-distribution valve.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125709819","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: 7

Assessment of Grids and Computational Schemes for Numerical Simulation of HIFiRE-5 HIFiRE-5数值模拟网格和计算方案的评估

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467556

Zheng Han, Chao Yan, Hongkang Liu

引用次数: 0

A Novel Looseness Detection Method for Hydraulic Pipeline Clamp Based on Statistical Analysis 基于统计分析的液压管路卡箍松动检测新方法

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467655

Na Xiao, Ling Lu, Qin Wei, Feng Yang

{"title":"A Novel Looseness Detection Method for Hydraulic Pipeline Clamp Based on Statistical Analysis","authors":"Na Xiao, Ling Lu, Qin Wei, Feng Yang","doi":"10.1109/ICMAE.2018.8467655","DOIUrl":"https://doi.org/10.1109/ICMAE.2018.8467655","url":null,"abstract":"The pipeline is widely used in various kinds of mechanical equipment, usually fixed by the clamps. It is great important to detect the fixed clamps for the operation of equipment by signal processing. The time domain signal is quite popular in the field of signal processing. There are generally two major types of methods for analyzing time-domain signals. The one is that the time domain signal is converted into other domains such as frequency domain and time frequency domain; the other is using statistical analysis methods to analyze signals. This paper presents a new feature extraction method based on statistical analysis, which is called the number of conformation patterns (CPN). The phase space reconstruction of time series is carried out, and the numbers of conformation patterns with different embedding dimensions are counted to be features for the signal. Through the simulation analysis, the characteristic values are sensitive to the frequency of the signal. This method is used to analyze the experimental data of the looseness of the pipeline clamp, and the results show that CPN can effectively detect the different degrees of clamp looseness.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130947501","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

Real-time Data Fusion Method Research Based on Different Measurement Element of Reconnaissance Radar 基于不同测量要素的侦察雷达实时数据融合方法研究

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467695

Guanhui Liang, Guizhou Lv, Ya-feng Meng

引用次数: 0

A Tuning Method for the Derivative Filter in PID Controller with Delay Time 具有时滞的PID控制器导数滤波器的整定方法

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467640

Haitao Sun, M. Mnati, Mohamed Nabil Ibrahim, Alex Van den Bossche

引用次数: 4

Thick-Walled Functionally Graded Material Cylinder under Thermo-Mechanical Loading 热机械载荷下厚壁功能梯度材料筒体的研究

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467646

R. Moheimani, Mohsen Damadam, A. Nayebi, H. Dalir

引用次数: 8

Wall Temperature Effects on Hypersonic Aerodynamics of the Mars Entry Capsule 壁面温度对火星返回舱高超声速空气动力学的影响

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467611

K. Zhong, Xiaoyong Wang, Chao Yan

{"title":"Wall Temperature Effects on Hypersonic Aerodynamics of the Mars Entry Capsule","authors":"K. Zhong, Xiaoyong Wang, Chao Yan","doi":"10.1109/ICMAE.2018.8467611","DOIUrl":"https://doi.org/10.1109/ICMAE.2018.8467611","url":null,"abstract":"The chemical non-equilibrium method is implemented to investigate wall temperature effects on the hypersonic aerodynamics of the Mars entry capsule named Mars Science Laboratory (MSL). Two isothermal walls (1000 and 2000K) and a radiative-equilibrium wall temperature are used to take account of the temperature effects, respectively. The numerical results show that, the wall temperature has no significant effect on the pressure of the forebody, while influences the pressure of the afterbody remarkably, especially at the separation area. The shear stress of the forebody increases with the wall temperature increased, and the wall temperature affects the shear stress of the afterbody obviously. The wall temperature has no significant effects on the aerodynamics of the forebody. At different wall temperatures, the maximum discrepancy of the forebody’s axial force coefficient, normal force coefficient and pitch moment coefficient is merely 0.05%, 1.0% and 1.2%, respectively. The wall temperature impacts the aerodynamics of the afterbody significantly. At different wall temperatures, the maximum discrepancy of axial force coefficient, normal force coefficient and pitch moment coefficient of the afterbody is 55.7%, 26.4% and 61.5%, respectively.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132126136","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

Cylindrical Grinding Performance Evaluation 外圆磨削性能评价

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467609

Azhar Thanedar, Rajkumar P. Singh, S. Joshi

{"title":"Cylindrical Grinding Performance Evaluation","authors":"Azhar Thanedar, Rajkumar P. Singh, S. Joshi","doi":"10.1109/ICMAE.2018.8467609","DOIUrl":"https://doi.org/10.1109/ICMAE.2018.8467609","url":null,"abstract":"Cylindrical grinding process requires a large amount of specific grinding energy and the energy is dissipated as heat in the work surface resulting in increasing the surface temperature and localized plastic deformation. An increase in temperature at grinding interaction zone causes deterioration of the surface integrity, leading to grinding burns, induction of tensile residual stress and geometrical inaccuracies, so it’s become important to understand the factors which affect grinding temperature. The objective of this work is to undertake comprehensive analysis of grinding parameters and associated phenomena during grinding process that influence heat flow in and out of the grinding zone and its effect on grinding burns. In this regard, screening experiments were conducted for obtaining the most influential grinding variables such as thermal damages, surface roughness and form error. Further, these variables were used for the detailed experimental study. In addition, the work also focuses on theoretical evaluation of maximum surface temperature so that the onset of grinding burn can be identified. It is known that direct measurement of grinding temperature is always difficult during experiment method as the work-wheel interaction zone is fairly hidden and flooded with the coolant. Therefore, the evaluation of temperature would help the in early detection of possibility of the grinding burns.","PeriodicalId":118501,"journal":{"name":"2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE)","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130551746","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

Development of High-Temperature Position Sensors for Control of Actuators in Aerospace Systems 航天系统作动器控制用高温位置传感器的研制

2018 9th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2018-07-01 DOI: 10.1109/ICMAE.2018.8467645

Yongdae Kim, H. Choi

引用次数: 2