检索结果-内蒙古大学图书馆

Multiobjective Robust PI Synthesis in Plants with Uncertain Poles

IFAC-PapersOnLine 2024年第7期58卷 174-179页

作者： Ricardo Massao Kagami Roberto Zanetti Freire Gilberto Reynoso-Meza Industrial and Systems Engineering Graduate Program (PPGEPS) Pontifícia Universidade Católica do Paraná (PUCPR) Brazil Industrial and Systems Engineering Graduate Program (PPGEPS) Universidade Tecnológica Federal do Paraná (UTFPR) Brazil Control Systems Optimization Laboratory (LOSC) PUCPR Brazil

The use of multiobjective optimization procedures for control tuning has been constantly explored, presenting satisfactory results, and generating significant contributions to control engineering. In this way, the field of robust control can benefit significantly from the integration of multiobjective optimization design procedures for robust Proportional-Integral-Derivative (RPID) controller synthesis, enabling innovative solutions to complex control challenges. Due to this fact, this paper explores an approach to utilize multiobjective optimization algorithms in a simplified procedure, considering uncertain systems in the form of interval plants with uncertain poles, the Kharitonov theorem is used to obtain a region of stability as search space for the multiobjective algorithm, being the optimization process performed over a nominal system model. Two numerical cases and a flexible actuator model were used to demonstrate the procedure for RPI synthesis, resulting in robustly stable controllers with optimized performance over error and control signal effort measures.

关键词： Robust control multiobjective optimization robust stability Kharitonov theorem PI controller

来源：评论

学校读者我要写书评

暂无评论

Applications of multi-objective optimisation for PID-like controller tuning: a 2015-2019 review and analysis

引用

IFAC-PapersOnLine 2020年第2期53卷 7933-7940页

作者： Tainara Marques Gilberto Reynoso-Meza Industrial and Systems Engineering Graduate Program (PPGEPS) Pontifical Catholic University of Parana (PUCPR) CuritibaPR Brazil

The first open invited track in multi-objective optimisation for control systems was organised in 2017 with the idea of exchanging ideas and research about how those techniques are valuable for control engineers. Given that control engineering problems are generally multi-objective problems, multi-objective optimisation offers an interesting approach via the simultaneous optimisation of all design objectives. Controller tuning is not except from this. In this paper we perform a review and analysis of the literature, limited to the IFAC environment, to appreciate and detect new tendencies in controller tuning applications via multi-objective optimisation. Time window under consideration is from 2015 to date, coinciding with a previous review on the topic, as well as the emigration of IFAC proceedings to Elsevier.

关键词： Multi-objective optimisation Parametric optimisation Evolutionary Algorithms Intelligent Control Process Control

来源：评论

学校读者我要写书评

暂无评论

Indoors Object Location Protocol in a Smart Home

Indoors Object Location Protocol in a Smart Home

引用

Annual Conference of the IEEE Industrial Electronics Society

作者： Vinicius Prado da Fonseca Paulo F. F. Rosa Systems and Computing Graduate Program Instituto Militar de Engenharia Defense Engineering Graduate Program Instituto Militar de Engenharia

ISBN: (纸本)9781479902255

This article presents a system for tracking the position of objects within a smart home to support a robot assistant in pick-and-place tasks. The current system is capable of estimating the position of an object using the signal strength received by a mobile device in a ZigBee sensor network. Received strength signal indication measurements were done in laboratory for applying a estimation method. Two models were utilized (a) log-distance path loss - model in which signal lost has a random influence with log-normal distribution, and (b) free space decay law - based on the decay law for a signal on a open space. Experiments with satisfactory results were done with a public dataset to benchmark our data.

关键词： Indoors Positioning System RSSI ZigBee

来源：评论

学校读者我要写书评

暂无评论

A case study on effectively identifying technical debt 13

A case study on effectively identifying technical debt

引用

17th International Conference on Evaluation and Assessment in Software engineering, EASE 2013

作者： Zazworka, Nico Spínola, Rodrigo O. Vetro, Antonio Shull, Forrest Seaman, Carolyn Fraunhofer USA Center for Experimental Software Engineering College Park United States Graduate Program in Systems and Computer UNIFACS Salvador Brazil Dept. of Control and Computer Engineering Politecnico di Torino Torino Italy Department of Information Systems UMBC Baltimore United States Elsevier Information Systems GmbH Frankfurt Germany

ISBN: (纸本)9781450318488

Context: The technical debt (TD) concept describes a tradeoff between short-term and long-term goals in software development. While it is highly useful as a metaphor, it has utility beyond the facilitation of discussion, to inspire a useful set of methods and tools that support the identification, measurement, monitoring, management, and payment of TD. Objective: This study focuses on the identification of TD. We evaluate human elicitation of TD and compare it to automated identification. Method: We asked a development team to identify TD items in artifacts from a software project on which they were working. We provided the participants with a TD template and a short questionnaire. In addition, we also collected the output of three tools to automatically identify TD and compared it to the results of human elicitation. Results: There is little overlap between the TD reported by different developers, so aggregation, rather than consensus, is an appropriate way to combine TD reported by multiple developers. The tools used are especially useful for identifying defect debt but cannot help in identifying many other types of debt, so involving humans in the identification process is necessary. Conclusion: We have conducted a case study that focuses on the practical identification of TD, one area that could be facilitated by tools and techniques. It contributes to the TD landscape, which depicts an understanding of relationships between different types of debt and how they are best discovered. Copyright 2013 ACM.

关键词： Software design

来源：评论

学校读者我要写书评

暂无评论

Impact point of probing rockets by telemetry and slant range 5

Impact point of probing rockets by telemetry and slant range

引用

5th International Symposium on Instrumentation systems, Circuits and Transducers, INSCIT 2021

作者： Cantanhede, Nilton Rodrigues Santana, Ewaldo Eder Carvalho Da Silva Junior, Paulo Fernandes De Jesus Barros, Jonas Freire, Raimundo Carlos Silverio State University of Maranhao Graduating Program in Engineering Computation and Systems São Luís Brazil Graduated in Mathematics The Federal University of Maranhão São Luís Brazil Federal University of Campina Grande Graduate Program in Electrical Engineering Campina Grande Brazil

ISBN: (纸本)9781728197265

In this work, is developing a method for obtaining the point of impact of a rocket by telemetry data and a Slant Range device. The trajectory data was obtained from a real flight path by merging the angular components of a telemetry antenna (azimuth and elevation) and the radial distance information provided by the Slant Range device. Position components were analyzed with the Telemetry antenna in automatic mode (in tracking), comparing with the tracking performance performed by the location radar. The result is obtained by the composition of the coordinates of the Telemetry-Slant Range set. A significant reduction in the search area can be used as an alternative form of use, providing additional location information for payload recovery around the actual point of impact. © 2021 IEEE.

关键词： Rockets

来源：评论

学校读者我要写书评

暂无评论

Minimum Realization Tuning Strategy for Dynamic Matrix Control

引用

IFAC Proceedings Volumes 2014年第3期47卷 1314-1319页

作者： Daniel C. Jeronymo Antonio A.R. Coelho Automation and Systems Engineering Graduate Program Federal University of Santa Catarina UFSC Florianópolis SC Brazil

In this paper autotuning and self-tuning methods for Dynamic Matrix Control (DMC) are presented with application to single-input single-output (SISO) processes which can be approximated by a first-order-plus-dead-time model. In order to validate the method a nonlinear control valve system described by a Wiener process is simulated. This process was identified by a Hammerstein model and controlled by DMC with output compensator. The proposed tuning methods have its performance compared to another standard method found in literature, showing more conservative results regarding smoothness of the control action while maintaining adequate performance on set-point tracking.

关键词： Model-based control nonlinear control first-order-plus-dead-time Autotuners Self-tuning control

来源：评论

学校读者我要写书评

暂无评论

Urban Digital Twins for Synthetic Data of Individuals with Mobility Aids in Curitiba, Brazil, to Drive Highly Accurate AI Models for Inclusivity

Urban Digital Twins for Synthetic Data of Individuals with M...

引用

8th International Conference on Science, Technology and Innovation for Society, CITIS 2023

作者： Luna-Romero, Santiago Felipe Stempniak, Charles Roberto de Souza, Mauren Abreu Reynoso-Meza, Gilberto Health Technology Graduate Program Pontifícia Universidade Católica do Paraná Curitiba80215-901 Brazil Automa Geo "Digital Twin Platform" Curitiba Brazil Industrial and Systems Engineering Graduate Program Pontifícia Universidade Católica do Paraná Curitiba80215-901 Brazil

ISBN: (纸本)9783031520891

This article delves into the significance of urban digital twins in generating synthetic data specifically tailored for individuals with disabilities. It explores how this data can be effectively utilized to construct artificial intelligence (AI) models that promote inclusivity and enhance accessibility in urban environments. The article thoroughly examines the challenges and opportunities associated with acquiring data on individuals with disabilities, taking into account the ethical and practical implications of generating and utilizing synthetic data for the development of accessible and inclusive technologies. Using the city of Curitiba, Brazil as a case study, which has undergone scanning, digitization, and transformation into an urban digital twin, avatars have been strategically placed to enable the detection of individuals with disabilities within diverse scenarios and perspectives in urban environments. Consequently, this approach provides a diverse and realistic representation of the situations in which individuals with disabilities may find themselves in urban settings, contributing to advancements in urban planning and technology by emphasizing the importance of digital twins in generating synthetic data to promote inclusivity and accessibility for individuals with disabilities. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Computer vision

来源：评论

学校读者我要写书评

暂无评论

Optimization and analysis of variability in high precision injection molding

Optimization and analysis of variability in high precision i...

引用

ASPE Spring Topical Meeting on Precision Micro/Nano Scale Polymer Based Component and Device Fabrication, ASPE 2005

作者： Castro, Carlos E. Lilly, Blaine Castro, José M. Ríos, Mauricio Cabrera Department of Industrial Welding and Systems Engineering Ohio State University Columbus OH 43202 United States Graduate Program in Systems Engineering Universidad Autónoma de Nuevo León San Nicolás de los Garza Nuevo-León 66450 Mexico

ISBN: (纸本)1887706372

Injection Molding (IM) is considered to be the most important process for mass-producing plastic products. One of the biggest challenges facing injection molders is to determine the best settings for the controllable process variables (CPVs). Selecting the proper settings is crucial because the behavior of the polymeric material during shaping is highly influenced by the process variables. The difficulty of optimizing an IM process is that the performance measures (PMs), such as surface quality or cycle time that characterize the adequacy of the part for its intended purpose usually show conflicting behavior. Furthermore, in actual molding, the CPVs will vary over some range during molding. This inconsistency of the process variables will lead to variability in the PMs. In high precision manufacturing, in particular for micro and nano scale components and devices, this variability needs to be minimized, and if possible eliminated. Thus, the variability in the PMs needs to be included in the optimization problem. The aim of this work is to demonstrate a method based on CAE, statistical testing, artificial neural networks (ANNs), and data envelopment analysis (DEA) to find the optimal compromises between multiple PMs and their variability to prescribe the values for the CPVs in IM. We present an example where the optimization is carried out in two phases. Phase one uses the PMs that are significantly affected by the injection gate location in order to prescribe two possible injection gates. Phase two of the optimization uses Data Envelopment Analysis (DEA) to find a PM-based efficient frontier for each injection gate considering process variability. These two efficient frontiers are then compared to select the best location. Other possible applications are discussed.

关键词： Injection molding

来源：评论

学校读者我要写书评

暂无评论

A simulation methodology to evaluate electromagnetic compatibility in printed circuit boards 4

A simulation methodology to evaluate electromagnetic compati...

引用

4th International Symposium on Instrumentation systems, Circuits and Transducers, INSCIT 2019

作者： Comin, Rodrigo Ferreira, Sandro Binsfeld Rhod, Eduardo Luis Product Development Engineering Valeo Thermal Bus Systems Caxias do Sul Brazil E. E. Graduate Program - Itt-Chip Unisinos University Sao Leopoldo Brazil

ISBN: (纸本)9781728121093

In competitive segments like automobile and bus manufacturing industries, quality of vehicles need to be improved constantly to meet internal and external market demands. Compliance with international standard regulations for electronic equipment require expensive tests as part of the design and certification processes. In this work, a methodology to simulate electromagnetic compatibility tests is proposed, enabling cost reduction during certification, and consequently reducing development time. Two different printed-circuit-board layouts of a DC/DC-converter case study are compared through measurements and simulations to validate the methodology. © 2019 IEEE.

关键词： Electromagnetic compatibility

来源：评论

学校读者我要写书评

暂无评论

Exploring 3D Reconstruction with Drone Images: Advances and Challenges in Urban Environments 50

Exploring 3D Reconstruction with Drone Images: Advances and ...

引用

50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Miranda Baldivieso, Thiago João da Silva Batista, Taise Grazielle Chagas, Fabio Suim Rodrigues Velho, Luiz Carlos Pacheco Ferreira Rosa, Paulo Fernando Defense Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil State Institute of the Environment Inea RJ Rio de Janeiro Brazil Department of Science and Industry systems University of South-Eastern Norway Kongsberg Norway Department of Computer Graphics Institute for Pure and Applied Mathematics Rio de Janeiro Brazil Electrical Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil

ISBN: (纸本)9781665464543

This working-in-progress paper aims to present a three-dimensional reconstruction using aerial images in different environments. The experiments were conducted with aircraft in both external and internal settings, starting with image acquisition, followed by the application of specific photogrammetry software-both commercial and open-source-and concluding with a qualitative evaluation of the results. © 2024 IEEE.

关键词： Aerial photography

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：