检索结果-内蒙古大学图书馆

2024 4th International Conference on Artificial Intelligence and Industrial Technology Applications, AIITA 2024

作者： Hu, Xiaomei Hua, Yuting Weng, Jiahong Teng, Xianshu Zhang, Mingnan The Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronic Engineering and Automation Shanghai University Shanghai200072 China

Solid rocket motor (SRM) is a core component of rockets. Considering the high cost of solid rocket motors and the high demand for transportation and storage, there is an urgent need to predict the performance of solid rocket motors before the ground ignition test to lower the cost of tests. Using data mining technology to predict various parameters of rocket motors with historical data has become a new development direction. In order to improve the data fitting effect and prediction accuracy, a novel prediction model was proposed, which tries to combine the Whale Optimization Algorithm (WOA) with the Error Correction Gated Recurrent Unit neural network (ECGRU) to correct the basic prediction performance of the Long Short-Term Memory neural network model (LSTM). Compared with traditional methods, experiments showed that the novel model was beneficial in improving the reliability of the prediction of the thrust and specific impulse. © Published under licence by IOP Publishing Ltd.

关键词： Long short-term memory

来源：评论

学校读者我要写书评

暂无评论

Motor test data quality evaluation model based on critic-fluctuant weight assignment method 3

Motor test data quality evaluation model based on critic-flu...

引用

2024 3rd International Conference on Electrical, Control and Information Technology, ECITech 2024

作者： Hu, Xiaomei Teng, Xianshu Hua, Yuting Weng, Jiahong The Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronic Engineering and Automation Shanghai University Shanghai200072 China

The article addresses the limitations of traditional weight analysis methods in handling ground ignition experiment data for solid rocket motors, particularly the anti-interference ability to noise factors. To address this issue, the specialized Critic-Fluctuant weight analysis method is proposed. This method calculates objective weight values based on fluctuation values and integrates noise standard scores into data quality assessment, enabling researchers to effectively and intuitively identify different levels of data quality. After comparing and analyzing the objective weights and data quality scores of 100 ground ignition test data sets, it is verified that Critic-Fluctuant has higher adaptability and accuracy than traditional CRITIC methods in ground ignition test scenarios. The article provides new insights and tools for researchers to deal with similar data characteristics. © 2024 Published under licence by IOP Publishing Ltd.

关键词： Quality control

来源：评论

学校读者我要写书评

暂无评论

Spatial Data Thickening-Based Carbon Nephogram Using UAV Real-Time Monitoring

Spatial Data Thickening-Based Carbon Nephogram Using UAV Rea...

引用

International Conference on Mechanical Design, ICMD 2023

作者： Nie, Zhiqi He, Bin Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronic Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9789819709212

This study explores the combination of unmanned aerial vehicle (UAV) and ground monitoring for real-time carbon footprint mapping technology in low-carbon smart parks. Addressing the conflict between sampling rate and monitoring efficiency in UAV monitoring, we propose a spatial data thickening algorithm based on moving window spline interpolation and time series fusion with inverse distance weighting. Meanwhile, a comprehensive carbon monitoring algorithm is proposed by combining ground and spatial carbon emission calculation methods. Furthermore, the concept of carbon nephogram is introduced to depict the spatial distribution and intensity of carbon emissions. By establishing an integrated monitoring system and conducting simulation experiments in a small-scale smart park scenario, the results show that the collaborative monitoring system has superiority in improving monitoring efficiency and affording intuitive insights. It provides an effective methodology for the intelligent design and maintenance of smart parks. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Carbon footprint

来源：评论

学校读者我要写书评

暂无评论

Ensemble-based Offline Data-driven Evolutionary Optimization for Operation Parameter of Blast Furnace 20

Ensemble-based Offline Data-driven Evolutionary Optimization...

引用

20th International Conference on Natural Computation, Fuzzy Systems and Knowledge Discovery, ICNC-FSKD 2024

作者： Ye, Qiucheng Cai, Hongxia Bian, Yunqi School of Mechatronic Engineering and Automation Shanghai University Shanghai Key Laboratory of Intelligent Manufacturing and Robotics Shanghai China

ISBN: (纸本)9798350356328

Stable control of the iron-making process through the adjustment of operating parameters is essential to improve blast furnace productivity. However, due to the complex and dynamic nature of the reaction process, it is difficult to perform accurate modeling and simulation experiments for a blast furnace. This poses great difficulties in performing the evaluation of control strategies in real-time. Offline evolutionary optimization, as an optimization technique that relies only on historical data, enables the search for optimal operation parameters through the introduction of surrogates. Based on the characteristics of historical time-series data of the iron-making process, this study proposes an offline evolutionary optimization method based on advanced time-series surrogates. Ensemble strategy combining surrogates with different prediction time windows contributes robustness during the optimization process. Additionally, multiple sub-regions are maintained to enable extensive searching of the decision space with a multi-objective nature. The efficiency of the proposed pooling method is demonstrated through verification in actual production cases. © 2024 IEEE.

关键词： Blast furnaces

来源：评论

学校读者我要写书评

暂无评论

A Multi-party Asymmetric Self-play Algorithm and Its Application in Multi-USV Adversarial Game Simulations 24

A Multi-party Asymmetric Self-play Algorithm and Its Applica...

引用

2024 International Conference on Machine Learning, Pattern Recognition and automation engineering, MLPRAE 2024

作者： Rao, Jinjun Wang, Cong Liu, Mei Lei, Jingtao Giernacki, Wojciech Department of Precision Mechanical Engineering School of Mechatronic Engineering and Automation Shanghai University China Institute of Robotics and Machine Intelligence Faculty of Automatic Control Robotics and Electrical Engineering Poznan University of Technology Poland

ISBN: (纸本)9798400709876

Aiming at the problem that the combination of self-play (SP) and deep reinforcement learning (DRL) only involves two-party games and the policy learning of each party is limited, a multi-party asymmetric self-play algorithm (MASP) is proposed. Firstly, by improving the ELO scoring system, the ELO scoring takes into account each party of the unmanned surface vehicle (USV) clusters, and the imbalance of the number of USV clusters, so that the frequency of exchanging strategies of all USV clusters in the confrontation process is equal. Secondly, it ensures that USV clusters have a balanced combat ability, and at the same time ensures that the combat ability of all parties is strong and weak and the gap is not too wide. In addition, the parameters are dynamically set to reduce the update frequency of the policy of the stronger party. The experimental results show that the MASP can make the USV clusters learn more effective policies, have a shorter game time, and obtain higher rewards and ELO scores in the simple 2v2 adversarial game scenario and the three-party game scenario of a warship escort mission. © 2024 ACM.

关键词： Deep reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

Design and Analysis of Disc-Spring-Based Cable-Driven Variable Stiffness Joints 23rd

Design and Analysis of Disc-Spring-Based Cable-Driven Variab...

引用

23rd IFToMM China International Conference on Mechanism and Machine Science and engineering, IFToMM CCMMS 2022

作者： Xiao, Hang Xu, Zengrui Ding, Xilun Lyu, Shengnan Robotics Institute School of Mechanical Engineering and Automation Beihang University Beijing100191 China

ISBN: (纸本)9789811993978

Variable stiffness mechanisms perform better compliance during forceful interactions with uncertain environments. This paper proposes a novel disc-spring-based cable-driven variable stiffness joint. Considering the elastic cable and variable stiffness device, stiffness model of a general cable-driven joint is established. Mechanical property of a disc spring is analyzed. A variable stiffness device is obtained by stacking disc springs with different modes. Influence of cable tensions on stiffness of a revolute joint and a Hooke joint is evaluated. Two cases, a RR serial chain and an UR serial chain, are studied to verify the feasibility of stiffness adjustment through regulating cable tensions. Structure of the proposed variable stiffness joint is simple and compact, which can be utilized in cable-driven mechanisms widely. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Stiffness

来源：评论

学校读者我要写书评

暂无评论

Reconfigurable Digital Twin Framework for Manufacturing Systems 10

Reconfigurable Digital Twin Framework for Manufacturing Syst...

引用

10th International Conference on Industrial engineering and Applications, ICIEA 2023

作者： Cai, Hongxia Wang, Han Rong, Zhiqiang Bian, Yunqi Chen, Xiaoyu Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronic Engineering and Automation Shanghai University China School of Mechatronic Engineering and Automation Shanghai University China

ISBN: (纸本)9781643684086

Nowadays, modern manufacturing systems are becoming increasingly complex. They are exposed to more frequent and unpredictable risks of change and disruption, both external and internal. Reconfiguration is an important way for the manufacturing system to maintain stability, so we propose a reconfigurable digital twin system to enable it to cope with increasing uncertainty and instability. This paper investigates a unified description template for digital twin foundation components, enabling the fusion of digital objects at the layer of foundation components. On this basis, the methods for adjustment of internal and external changes are proposed. Also, a rapid development and simulation method based on reconfiguration strategies and similarity matching algorithms is proposed to support the reconfiguration of the digital twin. Finally, the proposed architecture is illustrated and validated with a case study of a manufacturing workshop for intelligent navigation vehicles. © 2023 The authors and IOS Press.

关键词： Intelligent systems

来源：评论

学校读者我要写书评

暂无评论

Vertical Air Gap Integration in Micromachined Millimeter-Wave Patch Antenna with Inset-Fed Technique for RF Enhancement 3

Vertical Air Gap Integration in Micromachined Millimeter-Wav...

引用

3rd International Conference for Advancement in Technology, ICONAT 2024

作者： Badrinathan, B. Anitha, G. Saveetha School of Engineering Department of Automation and Robotics Engineering Sciences Saveetha University Saveetha Institute of Medical and Technical Tamilnadu Chennai India

ISBN: (纸本)9798350354171

This work proposes an innovative antenna design for millimeter-wave applications. For improved performance, the proposed antenna employs a bulk micromachining structure combined with an inset-fed technique. The design is fully simulated using the HFSS software using a substrate material having a dielectric constant of 12.9. A vertical air gap is introduced beneath the patch element through the simulated micromachining structure to enhance the RF performance of the antenna. The designed antenna dimensions are 1.2mm × 1.7mm × 0.27mm and are intended to function at 60GHz within the millimeter-wave frequency spectrum. Outstanding performance metrics are shown by the simulation results, such as a maximum gain of 4.82 dBi, a return loss of -60.95 dB and a voltage standing wave ratio (VSWR) of 1 at the desired operating frequency of 60 GHz. The simulated design of the antenna exhibits promising potential for integration into emerging millimeterwave wireless systems and devices. © 2024 IEEE.

关键词： Gallium arsenide

来源：评论

学校读者我要写书评

暂无评论

Study on the interactive deformation of bone needles and circum-pelvic soft tissue

引用

High Technology Letters 2024年第3期30卷 297-303页

作者： ZHANG Famin LEI Jingtao School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444P.R.China Shanghai Key Laboratory of Intelligent Manufacturing and Robotics Shanghai 200444 P.R.China

During the robot-assisted pelvic fracture reduction,the needle-tissue interactive deformation characteristic is not clear,which affects the accuracy of robotic *** this paper,a layered rig-id-flexible coupling model is proposed,and the needle-tissue interactive deformation under the load-ing is analyzed by the Rayleigh-Ritz method,in accordance with the principle of minimum potential *** pelvic musculoskeletal tissue is reversely reconstructed,and the structure of the bone is segmented into cancellous bone and cortical *** Mooney-Rivlin five-parameter hyperelastic model is used to simulate muscle,and the Ogden hyperelastic model is used to simulate adipose *** element simulation is performed by loading different magnitudes of *** accuracy of the rigid-flexible coupling model is 0.432 mm,which indicates the correctness of the needle-tis-sue interactive deformation theory analysis.

关键词： pelvic fracture reduction rigid-flexible coupling needle-tissue interactive de-formation

来源：评论

学校读者我要写书评

暂无评论

Design and Control of High Precision Buoyancy Adjustment System for Small AUVs 4

Design and Control of High Precision Buoyancy Adjustment Sys...

引用

4th International Conference on Computer Science, Electronic Information engineering and Intelligent Control Technology, CEI 2024

作者： Wang, Yongyao Sui, Tao Yan, Shuxue Chen, Cong Li, Zhigang School of Automation and Electrical Engineering Shenyang Ligong University Shenyang China Shenyang Institute of Automation Chinese Academy of Sciences Marine Robotics Department Shenyang China

ISBN: (纸本)9798350378542

This paper addresses the issue of buoyancy variation caused by differences in seawater density at varying operational depths for small AUVs working within 200 meters. To tackle this, a buoyancy adjustment system is designed that uses a piston-type oil cylinder to take in and release oil. The system integrates a digital-to-analog converter with a cable sensor to achieve precise measurement and control of the oil volume by accurately measuring the piston position. A mathematical model of the buoyancy adjustment system is established, and a fuzzy PID control strategy optimized by the Beetle Antennae Search (BAS) algorithm is proposed. Through Simulink simulation analysis, the system's precision adjustment capability and stability are validated. The simulation results demonstrate that the system exhibits good control performance in terms of adjustment time, overshoot, and disturbance rejection, thereby proving its reliability and feasibility. © 2024 IEEE.

关键词： Disturbance rejection

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：