首页 > 最新文献

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

英文 中文
Computational Studies of the Recondensation Process in a Tank with a Cryogenic Filling 低温充注槽内再冷凝过程的计算研究
E. Marakhova, A.B. Shimanova, D. Uglanov, H. Adenane
In nowadays the best way to carry an operating body such hydrogen or nitrogen for example it’s to carry it in liquid state and low temperature which is cryogenic state. In this work it will be shown a computational studies of the recondensation process in a tank with a cryogenic filling, and also a promising technologies in the cryogenic filling tank that have been realized at the laboratory of Samara University. The computational studies carried out allow us to draw the following conclusion that during regasification of a cryoproduct in the cryogenic filling tank, recondensation of a part of the gasified product occurs due to the temperature difference between the wall of the thermos and the inner wall of the cryogenic filling tank. This process is observed at the beginning of regasification (in the first 3-5 minutes), and the intensity of this process is low and amounts to about 2-8%.
现在携带一个运行体,比如氢或氮的最好方式是在液态和低温状态下携带,也就是低温状态。在这项工作中,将展示一个低温充注槽内再冷凝过程的计算研究,以及在萨马拉大学实验室已经实现的一项有前途的低温充注槽技术。通过计算研究,我们可以得出以下结论:在低温充装罐中低温产品再气化过程中,由于保温瓶壁与低温充装罐内壁之间的温差,部分气化产品会发生再冷凝。该过程在再气化开始时(在前3-5分钟)观察到,该过程的强度很低,约为2-8%。
{"title":"Computational Studies of the Recondensation Process in a Tank with a Cryogenic Filling","authors":"E. Marakhova, A.B. Shimanova, D. Uglanov, H. Adenane","doi":"10.1109/ICMEAS54189.2021.00025","DOIUrl":"https://doi.org/10.1109/ICMEAS54189.2021.00025","url":null,"abstract":"In nowadays the best way to carry an operating body such hydrogen or nitrogen for example it’s to carry it in liquid state and low temperature which is cryogenic state. In this work it will be shown a computational studies of the recondensation process in a tank with a cryogenic filling, and also a promising technologies in the cryogenic filling tank that have been realized at the laboratory of Samara University. The computational studies carried out allow us to draw the following conclusion that during regasification of a cryoproduct in the cryogenic filling tank, recondensation of a part of the gasified product occurs due to the temperature difference between the wall of the thermos and the inner wall of the cryogenic filling tank. This process is observed at the beginning of regasification (in the first 3-5 minutes), and the intensity of this process is low and amounts to about 2-8%.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"1 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":"122063290","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: 3
Simulation Verification of Parts Processing Based on Virtual Numerical Control Machine 基于虚拟数控机床的零件加工仿真验证
F. Meng, DashunZhang, Jing Wang, Liqin Miao, Xueguang Li, Huizhong Hu
This electronic With the rapid development of global knowledge economy and science & technology, virtual manufacturing technology based on virtual reality and simulation technology came into being. The Virtual Machine Tool (VMT), as the execution unit of virtual manufacturing, is a key technology and prerequisite for virtual manufacturing. This article uses UG software to complete the construction of the geometric model of the three-axis CNC machine tool, and the NC machining program of the machined parts is generated based on UG CAM. By acquiring the actual machine structure, import the geometric model established in UG into VERICUT to create the kinematic model of the virtual machine tool. Taking a certain type of flange as the simulation processing object, and use the NC program generated in UG CAM to processing simulation in VERICUT. This verifies the correctness of the established model and NC program. Through optimizing the NC machining parameters, the collision or interference between machine tools and parts in actual processing can be avoided.
随着全球知识经济和科技的飞速发展,基于虚拟现实和仿真技术的虚拟制造技术应运而生。虚拟机床作为虚拟制造的执行单元,是实现虚拟制造的关键技术和前提。本文利用UG软件完成三轴数控机床几何模型的构建,并基于UG CAM生成被加工零件的数控加工程序。通过获取实际机床结构,将在UG中建立的几何模型导入到VERICUT中,建立虚拟机床的运动学模型。以某型法兰为仿真加工对象,利用UG CAM中生成的数控程序在VERICUT中进行加工仿真。验证了所建立的模型和数控程序的正确性。通过优化数控加工参数,可以避免实际加工中机床与零件之间的碰撞或干涉。
{"title":"Simulation Verification of Parts Processing Based on Virtual Numerical Control Machine","authors":"F. Meng, DashunZhang, Jing Wang, Liqin Miao, Xueguang Li, Huizhong Hu","doi":"10.1109/icmeas54189.2021.00022","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00022","url":null,"abstract":"This electronic With the rapid development of global knowledge economy and science & technology, virtual manufacturing technology based on virtual reality and simulation technology came into being. The Virtual Machine Tool (VMT), as the execution unit of virtual manufacturing, is a key technology and prerequisite for virtual manufacturing. This article uses UG software to complete the construction of the geometric model of the three-axis CNC machine tool, and the NC machining program of the machined parts is generated based on UG CAM. By acquiring the actual machine structure, import the geometric model established in UG into VERICUT to create the kinematic model of the virtual machine tool. Taking a certain type of flange as the simulation processing object, and use the NC program generated in UG CAM to processing simulation in VERICUT. This verifies the correctness of the established model and NC program. Through optimizing the NC machining parameters, the collision or interference between machine tools and parts in actual processing can be avoided.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"40 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":"117049773","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
Application Practice of Model-Based System Engineering Method in Civil Aircraft Cabin Pressure Control System Design 基于模型的系统工程方法在民机座舱压力控制系统设计中的应用实践
Tang Chao, He Yan, Zhang Kaili, litao litao, Jiafeng Li, Zhang Xinai
With the improvement of the complexity of civil aircraft,Model Based Systems Engineering(MBSE) plays more important role in the aircraft design nowadays. In this paper, an architecture design method based on MBSE applied in aircraft cabin pressure control system is introduced. A top-down design process including functional physical architecture analysis is presented to ensure final solution can meet stakeholder needs. Functional architecture produced by functional analysis which transfers stakeholder needs and top-level requirements to design requirements has great effects on physical solution design. Physical architecture which is implementation of functional architecture provides enough detail to synthesize a physical architecture. This paper proposes a framework for efficient architecture based MBSE which can also provide common understanding of the scope and characterization of the system for engineers involved in system design. It shows that the proposed MBSE method significantly improves synthesis of design and integration, and ensure the requirements can be properly implemented
随着民用飞机复杂性的提高,基于模型的系统工程(MBSE)在飞机设计中发挥着越来越重要的作用。介绍了一种基于MBSE的飞机座舱压力控制系统结构设计方法。提出了一个自顶向下的设计过程,包括功能物理架构分析,以确保最终解决方案能够满足利益相关者的需求。功能分析产生的功能体系结构将干系人需求和顶层需求转化为设计需求,对物理解决方案设计有很大影响。物理体系结构是功能体系结构的实现,它提供了足够的细节来综合物理体系结构。本文提出了一个基于MBSE的高效架构框架,该框架还可以为参与系统设计的工程师提供对系统范围和特征的共同理解。结果表明,所提出的MBSE方法显著提高了设计与集成的综合,保证了需求的合理实现
{"title":"Application Practice of Model-Based System Engineering Method in Civil Aircraft Cabin Pressure Control System Design","authors":"Tang Chao, He Yan, Zhang Kaili, litao litao, Jiafeng Li, Zhang Xinai","doi":"10.1109/icmeas54189.2021.00045","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00045","url":null,"abstract":"With the improvement of the complexity of civil aircraft,Model Based Systems Engineering(MBSE) plays more important role in the aircraft design nowadays. In this paper, an architecture design method based on MBSE applied in aircraft cabin pressure control system is introduced. A top-down design process including functional physical architecture analysis is presented to ensure final solution can meet stakeholder needs. Functional architecture produced by functional analysis which transfers stakeholder needs and top-level requirements to design requirements has great effects on physical solution design. Physical architecture which is implementation of functional architecture provides enough detail to synthesize a physical architecture. This paper proposes a framework for efficient architecture based MBSE which can also provide common understanding of the scope and characterization of the system for engineers involved in system design. It shows that the proposed MBSE method significantly improves synthesis of design and integration, and ensure the requirements can be properly implemented","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"37 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":"117000765","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
Research on Handling Risk Assessment for Civil Airplane under Dual Engine Failure 民用飞机双发故障处理风险评估研究
Liu Jingwei, Lin Jiaming
Dual engine failure is the most serious risk that a civil airplane may encounter in airline operations and flight tests. CCAR-25.671(d) clearly stipulates that the airplane must be designed so that it is controllable if all engines fail. In this paper, by building the aircraft 6-DOF motion simulation model and the control surface malfunction simulation model, the theoretical calculation and analysis of the airplane control characteristics after dual engine failure are given. Moreover, the safety of civil airplane under dual engine failure condition is evaluated. Finally, reasonable suggestions are given based on engineering experience, which can provide a reference for dual engine failure flight test of civil aircraft.
双引擎故障是民用飞机在航空运营和飞行试验中可能遇到的最严重的风险。CCAR-25.671(d)明确规定,飞机必须设计成在所有发动机故障时都是可控的。本文通过建立飞机六自由度运动仿真模型和操纵面故障仿真模型,对双发故障后飞机的控制特性进行了理论计算和分析。此外,还对民用飞机在双发故障条件下的安全性进行了评估。最后,结合工程经验给出了合理的建议,为民用飞机双发故障飞行试验提供参考。
{"title":"Research on Handling Risk Assessment for Civil Airplane under Dual Engine Failure","authors":"Liu Jingwei, Lin Jiaming","doi":"10.1109/icmeas54189.2021.00032","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00032","url":null,"abstract":"Dual engine failure is the most serious risk that a civil airplane may encounter in airline operations and flight tests. CCAR-25.671(d) clearly stipulates that the airplane must be designed so that it is controllable if all engines fail. In this paper, by building the aircraft 6-DOF motion simulation model and the control surface malfunction simulation model, the theoretical calculation and analysis of the airplane control characteristics after dual engine failure are given. Moreover, the safety of civil airplane under dual engine failure condition is evaluated. Finally, reasonable suggestions are given based on engineering experience, which can provide a reference for dual engine failure flight test of civil aircraft.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":" 36","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132012224","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
Preliminary Concept Modelling, Evaluation and Selection of Robotic Arm for Light Lifting Application 轻型起重机械臂的初步概念建模、评估与选择
Norfarahana Adibah Raffie, N. H. Amer, Syed Mohd Fairuz Syed Mohd Dardin, K. Hudha, S. Ishak
Hazardous environments gave a big challenge for the human to accomplish the desired tasks, especially in sampling and collecting materials either for securing the locality or research purposes. Hence, teleoperated robots with robotic arms have been proposed to execute any tasks that appointed. However, most robotic arms on the teleoperated robots only serve specific tasks and have no ability to retract arm with precise and smooth movement, which will compromise its functionality. In this paper, five designs of robotic arms were proposed with different mechanisms for its retractions. Evaluation and selection for the final design was decided based on the decision-making process for all designs. Considering important criterion, evaluation was performed using concept scoring. All concept designs were modelled and analysed in SolidWorks. Load was applied on the end effector of robotic arm to observe Von Mises criteria of designed arms. Both methods indicate that design 5 with linear motor mechanism has the best endurance and thus, chosen as the most suitable design to be mounted on the track vehicle.
危险环境给人类完成预期任务带来了巨大的挑战,特别是在采样和收集材料时,无论是为了确保地点还是为了研究目的。因此,带机械臂的遥控机器人被提议执行任何指定的任务。然而,大多数遥控机器人的机械臂只能完成特定的任务,无法精确、流畅地缩回手臂,这将影响其功能。本文提出了五种机械臂的设计方案,采用了不同的收臂机构。根据所有设计方案的决策过程,确定最终设计方案的评价和选择。考虑重要标准,采用概念评分法进行评价。所有的概念设计都在SolidWorks中建模和分析。对机械臂末端执行器施加载荷,观察设计臂的Von Mises准则。两种方法均表明,采用直线电机机构的设计5具有最佳的耐久性,因此被选为最适合安装在履带车辆上的设计。
{"title":"Preliminary Concept Modelling, Evaluation and Selection of Robotic Arm for Light Lifting Application","authors":"Norfarahana Adibah Raffie, N. H. Amer, Syed Mohd Fairuz Syed Mohd Dardin, K. Hudha, S. Ishak","doi":"10.1109/icmeas54189.2021.00043","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00043","url":null,"abstract":"Hazardous environments gave a big challenge for the human to accomplish the desired tasks, especially in sampling and collecting materials either for securing the locality or research purposes. Hence, teleoperated robots with robotic arms have been proposed to execute any tasks that appointed. However, most robotic arms on the teleoperated robots only serve specific tasks and have no ability to retract arm with precise and smooth movement, which will compromise its functionality. In this paper, five designs of robotic arms were proposed with different mechanisms for its retractions. Evaluation and selection for the final design was decided based on the decision-making process for all designs. Considering important criterion, evaluation was performed using concept scoring. All concept designs were modelled and analysed in SolidWorks. Load was applied on the end effector of robotic arm to observe Von Mises criteria of designed arms. Both methods indicate that design 5 with linear motor mechanism has the best endurance and thus, chosen as the most suitable design to be mounted on the track vehicle.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"49 3-4 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":"123456739","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
Deep Transfer Learning Based Multi-source Heterogeneous data Fusion with Application to Cross-scenario Tool Wear monitoring 基于深度迁移学习的多源异构数据融合及其在工具磨损监测中的应用
Jihong Yan, Xiaofeng Wang, Ahad Ali
Tool wear monitoring is the key part of intelligent maintenance and has been attracting considerable interest. However, traditional data-driven methods assume that the collected data following identical distribution and the training data is sufficient, which is impractical in practice. This paper proposed a novel framework to realize tool wear monitoring across scenarios based on deep transfer learning. The collected multi-source heterogeneous signal is fused based on the feature self-extraction and selection capabilities of deep learning. Particularly, the feature extraction capability of convolutional neural networks (CNN) for structured data is improved by integrating traditional feature extraction methods. Furthermore, the transfer learning technique is introduced to migrate the pre-trained model from the source domain to the target domain, and thus achieving the tool wear monitoring across scenarios. The proposed framework was applied to the continuous cutting process of tools and the excellent experimental results demonstrated the effectiveness of the deep transfer learning network for tool wear monitoring with a small number of labeled data, which demonstrates the practicality of the proposed framework.
刀具磨损监测是智能维修的重要组成部分,已引起人们的广泛关注。然而,传统的数据驱动方法假设收集的数据与训练数据具有相同的分布,这在实践中是不现实的。提出了一种基于深度迁移学习的工具磨损监测框架。基于深度学习的特征自提取和选择能力,对采集到的多源异构信号进行融合。特别是,通过集成传统的特征提取方法,提高了卷积神经网络(CNN)对结构化数据的特征提取能力。在此基础上,引入迁移学习技术,将预训练好的模型从源域迁移到目标域,从而实现跨场景的刀具磨损监测。将该框架应用于刀具的连续切削过程,实验结果证明了深度迁移学习网络在少量标记数据下进行刀具磨损监测的有效性,验证了该框架的实用性。
{"title":"Deep Transfer Learning Based Multi-source Heterogeneous data Fusion with Application to Cross-scenario Tool Wear monitoring","authors":"Jihong Yan, Xiaofeng Wang, Ahad Ali","doi":"10.1109/icmeas54189.2021.00029","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00029","url":null,"abstract":"Tool wear monitoring is the key part of intelligent maintenance and has been attracting considerable interest. However, traditional data-driven methods assume that the collected data following identical distribution and the training data is sufficient, which is impractical in practice. This paper proposed a novel framework to realize tool wear monitoring across scenarios based on deep transfer learning. The collected multi-source heterogeneous signal is fused based on the feature self-extraction and selection capabilities of deep learning. Particularly, the feature extraction capability of convolutional neural networks (CNN) for structured data is improved by integrating traditional feature extraction methods. Furthermore, the transfer learning technique is introduced to migrate the pre-trained model from the source domain to the target domain, and thus achieving the tool wear monitoring across scenarios. The proposed framework was applied to the continuous cutting process of tools and the excellent experimental results demonstrated the effectiveness of the deep transfer learning network for tool wear monitoring with a small number of labeled data, which demonstrates the practicality of the proposed framework.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"28 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":"126210858","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
Adaptive Backstepping Terminal Sliding Mode Attitude stabilization control for Moving Mass Rocket-propelled CubeSat 移动质量火箭推进立方体卫星自适应反步末端滑模姿态镇定控制
Qian Pengjun, Lu Zhengliang
This article addresses the attitude stabilization control problem of the moving mass rocket-propelled CubeSat in orbit maneuver. Considering the propellant combustion and the motion of two moving masses, the attitude dynamic model of the satellite is established by Newton multi-rigid system with variable mass dynamic. Subsequently, based on the simplified control model of pitch and yaw channel, backstepping technique is utilized to design the controller and the dynamic surface control is employed to avoid the computer explosion. An adaptive law is proposed to estimate the upper boundaries of uncertainties. Lyapunov function is used to prove the stability of the closed-loop system. Finally, numerical simulation results indicate the effectiveness of the designed control method.
研究了运动质量火箭推进立方体卫星在轨道机动中的姿态稳定控制问题。考虑推进剂燃烧和两个运动质量的运动,采用变质量动力学的牛顿多刚体系统建立了卫星姿态动力学模型。随后,在简化俯仰和偏航通道控制模型的基础上,利用反演技术设计控制器,采用动态曲面控制,避免了计算机爆炸。提出了一种估计不确定性上边界的自适应律。利用李雅普诺夫函数证明了闭环系统的稳定性。最后,数值仿真结果表明了所设计控制方法的有效性。
{"title":"Adaptive Backstepping Terminal Sliding Mode Attitude stabilization control for Moving Mass Rocket-propelled CubeSat","authors":"Qian Pengjun, Lu Zhengliang","doi":"10.1109/icmeas54189.2021.00014","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00014","url":null,"abstract":"This article addresses the attitude stabilization control problem of the moving mass rocket-propelled CubeSat in orbit maneuver. Considering the propellant combustion and the motion of two moving masses, the attitude dynamic model of the satellite is established by Newton multi-rigid system with variable mass dynamic. Subsequently, based on the simplified control model of pitch and yaw channel, backstepping technique is utilized to design the controller and the dynamic surface control is employed to avoid the computer explosion. An adaptive law is proposed to estimate the upper boundaries of uncertainties. Lyapunov function is used to prove the stability of the closed-loop system. Finally, numerical simulation results indicate the effectiveness of the designed control method.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"14 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":"114230726","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 vision-based relative navigation sensor for on-orbit servicing of CubeSats 面向立方体卫星在轨服务的基于视觉的相对导航传感器
R. Du, Xing Zhang, Xiang Zhang, Ling Wang, W. Liao
It has been anticipated that CubeSats would have wide applications in on-orbit servicing (OOS) fields due to their advantages of short research and development cycle and low manufacturing cost, in which the close-range relative navigation is a critical technique that usually requires high accuracy of the relative pose estimation. This paper proposes a vision-based relative navigation sensor for OOS of CubeSats. A set of active fiducial markers with multi-layer structure was designed to ensure an accurate unambiguous matching and measurement. An improved effective perspective-n-point (IEPnP) algorithm is developed to obtain an accurate relative state estimation. An experiment system which simulates the real illumination and motion conditions in space was set up to assess the performances of the proposed sensor. The results show that the sensor can overcome the interference of the ambient light, and can reach an accuracy of range estimation smaller than 2 mm and an accuracy of relative attitude estimation smaller than 0.4 deg at distance of 1 m. Through contrast tests, the accuracy of the proposed IEPnP algorithm is better than the classical perspective-3-point (P3P) algorithm and EPnP algorithm.
立方体卫星具有研发周期短、制造成本低等优点,在在轨服务领域具有广泛的应用前景,其中近距离相对导航是对相对姿态估计精度要求较高的关键技术。提出了一种基于视觉的立方体卫星OOS相对导航传感器。设计了一套多层结构的主动基准标记,保证了匹配和测量的准确性。为了获得精确的相对状态估计,提出了一种改进的有效视角-n点(IEPnP)算法。建立了一个模拟真实空间光照和运动条件的实验系统,对该传感器的性能进行了评估。结果表明,该传感器能够克服环境光的干扰,在1 m距离上的距离估计精度小于2 mm,相对姿态估计精度小于0.4°。通过对比测试,本文提出的IEPnP算法的准确率优于经典的视角-3点(P3P)算法和EPnP算法。
{"title":"A vision-based relative navigation sensor for on-orbit servicing of CubeSats","authors":"R. Du, Xing Zhang, Xiang Zhang, Ling Wang, W. Liao","doi":"10.1109/icmeas54189.2021.00016","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00016","url":null,"abstract":"It has been anticipated that CubeSats would have wide applications in on-orbit servicing (OOS) fields due to their advantages of short research and development cycle and low manufacturing cost, in which the close-range relative navigation is a critical technique that usually requires high accuracy of the relative pose estimation. This paper proposes a vision-based relative navigation sensor for OOS of CubeSats. A set of active fiducial markers with multi-layer structure was designed to ensure an accurate unambiguous matching and measurement. An improved effective perspective-n-point (IEPnP) algorithm is developed to obtain an accurate relative state estimation. An experiment system which simulates the real illumination and motion conditions in space was set up to assess the performances of the proposed sensor. The results show that the sensor can overcome the interference of the ambient light, and can reach an accuracy of range estimation smaller than 2 mm and an accuracy of relative attitude estimation smaller than 0.4 deg at distance of 1 m. Through contrast tests, the accuracy of the proposed IEPnP algorithm is better than the classical perspective-3-point (P3P) algorithm and EPnP algorithm.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"156 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":"132549201","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
Impact of turbocharger cooling and lubricating state on the Performance of Turbocharged Engine 增压器冷却润滑状态对涡轮增压发动机性能的影响
Liyong Huang, Shaolin Chen, Zhihui Wang
Turbocharged is very important for engine emission reduction of road vehicles. The performance of turbocharged engine was strongly affected by heat transfer of turbocharger. The aim of this studyis to evaluate the effect of turbocharger cooling and lubricating state on the performance of turbocharged engine. This work was developed a detailed model that evaluating both engine performance and turbocharger cooling and lubricating state. The simulated model was validated by the experimental data on the turbocharger and engine test bench. Finally, this model has been used to evaluate the engine performance under three different heat transfer conditions. The results showing the mass flow rate of turbocharger cooling water is an important factor for turbocharged engine performance, especially for the temperature of engine exhaust emission.
涡轮增压对道路车辆发动机减排具有重要意义。涡轮增压器的传热对涡轮增压发动机的性能有很大的影响。本研究的目的是评估涡轮增压器冷却和润滑状态对涡轮增压发动机性能的影响。本工作建立了一个详细的模型来评估发动机性能和涡轮增压器的冷却和润滑状态。仿真模型通过涡轮增压器和发动机试验台的实验数据进行了验证。最后,利用该模型对三种不同传热工况下的发动机性能进行了评价。结果表明,涡轮增压器冷却水质量流量是影响涡轮增压发动机性能的重要因素,尤其是影响发动机排气温度的重要因素。
{"title":"Impact of turbocharger cooling and lubricating state on the Performance of Turbocharged Engine","authors":"Liyong Huang, Shaolin Chen, Zhihui Wang","doi":"10.1109/icmeas54189.2021.00028","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00028","url":null,"abstract":"Turbocharged is very important for engine emission reduction of road vehicles. The performance of turbocharged engine was strongly affected by heat transfer of turbocharger. The aim of this studyis to evaluate the effect of turbocharger cooling and lubricating state on the performance of turbocharged engine. This work was developed a detailed model that evaluating both engine performance and turbocharger cooling and lubricating state. The simulated model was validated by the experimental data on the turbocharger and engine test bench. Finally, this model has been used to evaluate the engine performance under three different heat transfer conditions. The results showing the mass flow rate of turbocharger cooling water is an important factor for turbocharged engine performance, especially for the temperature of engine exhaust emission.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"12 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":"130431224","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
Simulations of NACA 65-415 and NACA 64-206 Airfoils using Computational Fluid Dynamics 基于计算流体动力学的NACA 65-415和NACA 64-206翼型仿真
D. Nagy
This paper exemplifies the influence of the purpose of an aircraft on the aerodynamic properties of its airfoil. In particular, the research takes into consideration two types of aircraft, namely cargo aircraft and military high-speed aircraft and compares their airfoil characteristics using their NACA airfoils as well as computational fluid dynamics. The results show that airfoils of aircraft designed for cargo have a heavier focus on maintaining a large lift force whereas speedoriented airplanes focus on minimizing the drag force.
本文举例说明了飞机使用目的对机翼气动性能的影响。本研究特别考虑了两种类型的飞机,即货机和军用高速飞机,并使用NACA翼型和计算流体动力学对其翼型特性进行了比较。结果表明,货物型飞机的翼型更注重保持较大的升力,而速度型飞机的翼型更注重减小阻力。
{"title":"Simulations of NACA 65-415 and NACA 64-206 Airfoils using Computational Fluid Dynamics","authors":"D. Nagy","doi":"10.1109/icmeas54189.2021.00021","DOIUrl":"https://doi.org/10.1109/icmeas54189.2021.00021","url":null,"abstract":"This paper exemplifies the influence of the purpose of an aircraft on the aerodynamic properties of its airfoil. In particular, the research takes into consideration two types of aircraft, namely cargo aircraft and military high-speed aircraft and compares their airfoil characteristics using their NACA airfoils as well as computational fluid dynamics. The results show that airfoils of aircraft designed for cargo have a heavier focus on maintaining a large lift force whereas speedoriented airplanes focus on minimizing the drag force.","PeriodicalId":374943,"journal":{"name":"2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)","volume":"17 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":"133391560","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
期刊
2021 7th International Conference on Mechanical Engineering and Automation Science (ICMEAS)
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1