检索结果-内蒙古大学图书馆

93rd Annual Meeting of the International Association of Applied Mathematics and Mechanics, GAMM 2023

作者： Şen, Gökçen Devlet Schaller, Manuel Worthmann, Karl Optimization-based Control Group Institute of Mathematics Technische Universität Ilmenau Ilmenau Germany Department of Control and Automation Engineering Istanbul Technical University Istanbul Turkey

We consider singular optimal control of port-Hamiltonian systems with minimal energy supply. We investigate the robustness of different stage-cost designs w.r.t. time discretization and show that alternative formulations that are equivalent in continuous time, differ strongly in view of discretization. Furthermore, we consider the impact of additional quadratic control regularization and demonstrate that this leads to a considerable increase in energy consumption. Then, we extend our results to the tracking problem within model predictive control and show that the intrinsic but singular choice of the cost functional as the supplied energy leads to a substantial improvement of the closed-loop performance. © 2023 The Authors. Proceedings in Applied Mathematics & Mechanics published by Wiley-VCH GmbH.

关键词： Model predictive control

来源：评论

学校读者我要写书评

暂无评论

EFEAR-4D: Ego-Velocity Filtering for Efficient and Accurate 4D radar Odometry

arXiv

引用

arXiv 2024年

作者： Wu, Xiaoyi Chen, Yushuai Li, Zhan Hong, Ziyang Hu, Liang The Department of Automation School of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen518055 China Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin150001 China

Odometry is a crucial component for successfully implementing autonomous navigation, relying on sensors such as cameras, LiDARs and IMUs. However, these sensors may encounter challenges in extreme weather conditions, such as snowfall and fog. The emergence of FMCW radar technology offers the potential for robust perception in adverse conditions. As the latest generation of FWCW radars, the 4D mmWave radar provides point cloud with range, azimuth, elevation, and Doppler velocity information, despite inherent sparsity and noises in the point cloud. In this paper, we propose EFEAR-4D, an accurate, highly efficient, and learning-free method for large-scale 4D radar odometry estimation. EFEAR-4D exploits Doppler velocity information delicately for robust ego-velocity estimation, resulting in a highly accurate prior guess. EFEAR-4D maintains robustness against point-cloud sparsity and noises across diverse environments through dynamic object removal and effective region-wise feature extraction. Extensive experiments on two publicly available 4D radar datasets demonstrate state-of-the-art reliability and localization accuracy of EFEAR-4D under various conditions. Furthermore, we have collected a dataset following the same route but varying installation heights of the 4D radar, emphasizing the significant impact of radar height on point cloud quality - a crucial consideration for real-world deployments. Our algorithm and dataset will be available soon at https://***/CLASS-Lab/EFEAR-4D. © 2024, CC BY-NC-SA.

关键词： Millimeter waves

来源：评论

学校读者我要写书评

暂无评论

EID-based Robust controller Design of PV Grid-Connected System with Parameter Uncertainty 41

EID-based Robust Controller Design of PV Grid-Connected Syst...

引用

第41届中国控制会议

作者： Jun Cai Fang Liu Zhen Fan Denis Sidorov Mukesh Kumar Pathak School of Automation Central South University Energy Systems Institute of Russian Academy of Sciences Department of Electrical Engineering Indian Institute of Technology Roorkee

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

In practice,the three-phase two-stage PV grid-connected system is interfered with by internal and external *** to improve the anti-interference ability of the grid-connected inverter has become more and more *** this paper,a current robust controller design method based on equivalent input disturbance(EID) is proposed for the grid-connected PV inverter system with parameter ***,the uncertainty of the PV grid-connected system is analyzed,and the mathematical model of the parameter uncertainty system is ***,the block diagram of the robust control system with parameter uncertainty based on EID is *** sufficient condition of robust stability of uncertain inverter system is given by using the Lyapunov functional method in the form of LMI,and the controller parameters are also ***,the experimental results show that the current controller has good robustness with parameter uncertainty,and significantly improves the quality of grid-connected current.

关键词： PV grid-connected system Parameter uncertainty EID Robust control Lyapunov functional

来源：评论

学校读者我要写书评

暂无评论

Linear Fresnel reflector technology in Brazil: a techno-economic evaluation

Renewable Energy and Power Quality Journal

引用

Renewable Energy and Power Quality Journal 2023年 21卷 329-336页

作者： Azevedo, G.F. Lopes, M.E. Menezes, B.A. Rabelo, O.H.F. Brito, L.B. Dias, A.B. Filho, A.L.F. Domingues, E.G. Department of Electrical Engineering University of Brasília Darcy Ribeiro University Campus – Gleba A Avenida L3 Norte DF Brasília70.910-900 Brazil Electrical Engineering/Control and Automation Engineering Program Federal Institute of Goiás Câmpus Goiânia Rua 75 nº46-Centro GO Goiânia74055-110 Brazil

This study aims to present the results of applying a computational tool developed to perform a technical-economic feasibility analysis of a large-scale Linear Fresnel Reflector (LFR) solar power plant. The viability analysis indicators were obtained considering that the electricity produced trades at the Regulated Contracting Environment of the Brazilian Electricity Market. The parametric structural optimization method is used to optimize the technical parameters of the plant. A case study was conducted to analyze the viability of Implementing a 100 MW LFR power plant in the five regions of Brazil. The results indicated that Northeastern is the best region to install this power plant. However, the project is not viable in all cities analyzed. A sensitivity analysis (SA) of some strategically selected variables was conducted to evaluate its impacts on the project's net present value of an optimized LFR plant located in the city with the best technical performance. Finally, an optimistic scenario was evaluated considering the net present value's response to the parameters investigated in the SA. For this scenario, the results indicated the project's economic viability. © 2023, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.

关键词： Sensitivity analysis

来源：评论

学校读者我要写书评

暂无评论

Adaptive Nonsingular Terminal Sliding Mode control with Time-Delay Estimation for Linear Motor systems

Adaptive Nonsingular Terminal Sliding Mode Control with Time...

引用

2022 Chinese automation Congress, CAC 2022

作者： Zhao, Yanqiu Liu, Zhitai Liu, Huanli Zhang, Zhongjin Lin, Weiyang Wang, Zhifeng Harbin Institute of Technology Research Institute of Intelligent Control and Systems Harbin150001 China Foshan University School of Mechatronic Engineering and Automation Foshan China

ISBN: (纸本)9781665465335

This paper presents a new adaptive nonsingualr terminal sliding mode control scheme for a class of motion platform driven by permanent-magnet linear motor. A barrier function (BF) is utilized to design the adaptive control gain law, then the overestimation of control gain that usually exists in sliding mode control (SMC) is avoided without requiring the upper boundary of system uncertainties. Moreover, this control scheme can guarantee the finite-Time convergence of the system and maintain the system state within a specified zero neighborhood. In addition, the practical time-delay estimation (TDE) technology is used to estimate the system dynamics and uncertainties, such as model errors, parameters variation and external disturbances. Therefore, the proposed controller has strong robustness and disturbance rejection ability. Finally, the effectiveness of this study is proved through some comparative experiments via a linear motor driven platform. © 2022 IEEE.

关键词： Sliding mode control

来源：评论

学校读者我要写书评

暂无评论

A Sparse Quadratic Programming Approach to Supervisory control of Multi-Zone HVAC systems with Consideration of Peak Demand Shaving and Thermal Comfort

A Sparse Quadratic Programming Approach to Supervisory Contr...

引用

International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON

作者： Pasitnat Sasananand David Banjerdpongchai Department of Electrical Engineering Faculty of Engineering Center of Excellence in Intelligent Control Automation for Process Systems Chulalongkorn University Bangkok Thailand

ISBN: (数字)9798350381559

ISBN: (纸本)9798350381566

The HVAC system is one of the major power consuming equipment in buildings. Considering the effective setpoint temperature of each zone can increase efficiency in managing power usage in buildings, leading to the operating cost reduction. This paper presents the design of supervisory control (SC) for multi-zone HVAC systems that aims to minimize the total operating cost (TOC) and the thermal comfort cost (TCC). To minimize the TOC and TCC, both objectives are normalized and combined as a quadratic programming (QP) problem which can be efficiently solved. To achieve the design objective, two methods of SC are developed for multi-zone, namely, centralized SC and decentralized SC. We apply standard QP and sparse QP solvers using interior point method. The numerical results reveal that centralized SC performs better according to a tradeoff curve which TOC and TCC are lower. While both solvers give the same results, sparse solver can provide the solutions faster than interior point method. This paper demonstrates that centralized control is appropriate for implementation in multi-zones buildings and the sparse solver proves to be more suitable in the context of sparse QP problem.

关键词： HVAC Costs Buildings Supervisory control Telecommunications Quadratic programming Sparse matrices

来源：评论

学校读者我要写书评

暂无评论

Ontology-Based Feedback to Improve Runtime control for Multi-Agent Manufacturing systems 19

Ontology-Based Feedback to Improve Runtime Control for Multi...

引用

19th IEEE International Conference on automation Science and engineering, CASE 2023

作者： Lim, Jonghan Pfeiffer, Leander Ocker, Felix Vogel-Heuser, Birgit Kovalenko, Ilya Pennsylvania State University Department of Industrial and Manufacturing Department of Mechanical Engineering State College United States Institute of Automation and Information Systems Technical University of Munich Munich Germany

ISBN: (纸本)9798350320695

Improving the overall equipment effectiveness (OEE) of machines on the shop floor is crucial to ensure the productivity and efficiency of manufacturing systems. To achieve the goal of increased OEE, there is a need to develop flexible runtime control strategies for the system. Decentralized strategies, such as multi-agent systems, have proven effective in improving system flexibility. However, runtime multi-agent control of complex manufacturing systems can be challenging as the agents require extensive communication and computational efforts to coordinate agent activities. One way to improve communication speed and cooperation capabilities between system agents is by providing a common language between these agents to represent knowledge about system behavior. The integration of ontology into multi-agent systems in manufacturing provides agents with the capability to continuously update and refine their knowledge in a global context. This paper contributes to the design of an ontology for multi-agent systems in manufacturing, introducing an extendable knowledge base and a methodology for continuously updating the production data by agents during runtime. To demonstrate the effectiveness of the proposed framework, a case study is conducted in a simulated environment, which shows improvements in OEE during runtime. © 2023 IEEE.

关键词： Multi agent systems

来源：评论

学校读者我要写书评

暂无评论

Complex dynamics of a magnetic microrobot driven by single deformation soft tail in random environment

引用

Theoretical & Applied Mechanics Letters 2024年第5期14卷 402-408页

作者： Xinpeng Shi Yongge Li Yong Xu Qi Liu School of Mathematics and Statistics Northwestern Polytechnical UniversityXi’an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China MOE Key Laboratory for Complexity Science in Aerospace Northwestern Polytechnical UniversityXi’an 710072China Department of Systems and Control Engineering Tokyo Institute of TechnologyTokyo 152-8552Japan

This study focuses on exploring the complex dynamical behaviors of a magnetic microrobot in a random *** purpose is to reveal the mechanism of influence of random disturbance on microrobot *** paper establishes stochastic dynamic models for the microrobot before and after deformation,considering the influence of Gaussian white *** system responses are analyzed via steady-state probability density functions and first deformation *** effects of different magnetic field strengths and fluid viscosities on the movement speed and angular velocity of the microrobot are *** results indicate that random disturbances can cause deformation of microrobots in advance compared to the deterministic *** work contributes to the design and motion control of microrobots and enhances the theoretical foundation of microrobots.

关键词： Magnetic microrobot Stochastic dynamic models Random disturbances

来源：评论

学校读者我要写书评

暂无评论

Capacity Optimization Configuration of Hybrid Energy Storage System Using a Modified Grey Wolf Optimization 7

Capacity Optimization Configuration of Hybrid Energy Storage...

引用

7th IEEE International Conference on Power and Renewable Energy, ICPRE 2022

作者： Meng, Defang Yu, Wei Shanghai University of Electric Power College of Automation Engineering Shanghai China HuaDian Electric Research Institute Department of Control Engineering Hangzhou China

ISBN: (数字)9781665450638

ISBN: (纸本)9781665450638

Aiming at the randomness and intermittent characteristics of renewable energy power generation, a capacity optimization method of a hybrid energy storage system is proposed to ensure the economical and reliable operation of wind and solar power supply systems. The optimization method takes the minimum life cycle cost of the hybrid energy storage system as the optimization goal, takes the load power shortage rate and the energy storage capacity as the constraints, and establishes the optimal configuration model of the hybrid energy storage capacity. Based on this model, the modified gray wolf algorithm (MGWO) is used to solve the optimal capacity configuration of the hybrid energy storage system. Finally, the optimization results of MGWO are compared with the basic GWO and particle swarm algorithm (GWO) through a numerical example, and it is verified that MGWO can configure the hybrid energy storage capacity more reasonably. © 2022 IEEE.

关键词： Wind power

来源：评论

学校读者我要写书评

暂无评论

Technical-economic feasibility analysis of a large-scale parabolic trough collectors solar power plant in Brazil

Renewable Energy and Power Quality Journal

引用

Renewable Energy and Power Quality Journal 2023年 21卷 337-344页

作者： Lopes, M.E. Azevedo, G.F. Menezes, B.A. Rabelo, O.H.F. Brito, L.B. Dias, A.B. Filho, A.L.F. Domingues, E.G. Department of Electrical Engineering University of Brasília Darcy Ribeiro University Campus Gleba A Avenida L3 Norte DF Brasília70.910-900 Brazil Electrical Engineering/Control and Automation Engineering Program Federal Institute of Goiás Câmpus Goiânia Rua 75 nº46-Centro GO Goiânia74055-110 Brazil

This study aims to present the results of the application of a computational tool developed to perform a technical-economic feasibility analysis of large-scale Parabolic Trough Collectors (PTC) solar power plants in Brazil. The gross revenue from cash flow is obtained through an energy trading model for the Regulated Contracting Environment of the Brazilian Electricity Market. The economic viability analysis uses the Net Present Value, Modified Internal Rate of Return, Discounted Payback, and Levelized Cost of Energy indicators. The parametric structural optimization method is used to optimize the technical parameters of the plant. A case study was conducted to analyse the feasibility of implementing a 100 MW PTC in the five regions of Brazil. The results indicated that the best region in Brazil to receive this technology is the northeastern region. However, the project is economically unfeasible in all cities analysed. Therefore, a sensitivity analysis of the main parameters that affect the project's net present value is carried out to evaluate the impact of the economic parameters on the economic viability of an optimized PTC plant located in the city with the best technical performance. An optimistic scenario was evaluated considering the system's response to the parameters investigated in the sensitivity analysis. For this scenario, the results pointed to the project's economic viability. © 2023, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.

关键词： Sensitivity analysis

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：