检索结果-内蒙古大学图书馆

9th International Renewable Energy Congress, IREC 2018

作者： El Hadj Ali, J. Feki, E. Zermani, M.A. De Prada, C. Mami, A. Tunis Tunisia Systems Engineering and Automatic Control DPT EII Universidad de Valladolid C/Real de Burgos s/n Valladolid47011 Spain

ISBN: (纸本)9781538609989

The preterm infant are estimated to be around 15 million cases worldwide every year, according to the World Health Organization (WHO) that is more than 1 in 10 babies worldwide 60% of them are born in Sub-Saharan Africa and South Asia. So the babies born prematurely are generally kept in special chamber or sensitive unit care called 'incubators' which are designed to help this preterm babies to keeping their bodies warm for the first several weeks of life. Because the infant incubator provides a stable level of temperature, relative humidity and oxygen concentration. Temperature control system is the most important part of the baby incubator which is around (37°C). This paper focuses on the comparison of two identification methods to get the best model from the experimental data and chooses the one that is nearest to the real process. The two methods are the identification system toolbox from Matlab environment and a software called HIDEN or Hito IDENTification. © 2018 IEEE.

关键词： MATLAB

来源：评论

学校读者我要写书评

暂无评论

Design of Mobile Manufacturing System For Extraction of Fuel From Lunar Soil

Design of Mobile Manufacturing System For Extraction of Fuel...

引用

International Russian Automation Conference (RusAutoCon)

作者： Elena N. Desyatirikova Andrei V. Chernenkii Dpt. of Control systems and Information technologies in Construction Voronezh State Technical University Voronezh Russia Highest Engineering School Peter the Great St.Petersburg Polytechnic University St.Petersburg Russia

Open space exploration is difficult to carry out directly from the Earth's surface. Lunar bases, the construction of which is announced by various countries, are considered as transit points for spaceships and spacecrafts heading further to the planets of the Solar system and open space. However, for any movement in the space the energy is required, and the source of the energy is fuel. It is not always advisable and almost impossible to deliver the needed amount of a fuel to the Moon from the Earth. In this paper we consider one of the possible solutions to build a flexible mobile production system for producing of a fuel from the ore, which could be found on the lunar surface. The technology for such reprocessing has already been defined, then, a system is required that will be able to produce fuel and supply spaceships and spacecrafts in an autonomous mode. The specifics and composition of such system are described, the layout of the system was simulated. The calculations of the core resource of the system are provided.

关键词： Moon Fuels Ores Space vehicles Batteries Earth Soil

来源：评论

学校读者我要写书评

暂无评论

A Sum-Of-Squares Constrained Regression Approach for Process Modeling

引用

IFAC-PapersOnLine 2019年第1期52卷 754-759页

作者： José L. Pitarch Antonio Sala César de Prada Systems Engineering and Automatic Control DPT EII Universidad de Valladolid. C/Real de Burgos s/n 47011 Valladolid Spain Instituto Universitario de Automática e Informática Industrial Universitat Politècnica de València Camino de Vera S/N 46022 Valencia Spain Institute of Sustainable Processes (IPS) Universidad de Valladolid. C/Real de Burgos s/n 47011 Valladolid Spain

Combining empirical relationships with a backbone of first-principle laws allow the modeler to transfer the available process knowledge into a model. In order to get such so-called grey-box models, data-reconciliation methods and constrained regression algorithms are key to obtain reliable process models that will be used later for optimization. However, the existent approaches require solving a semi-infinite constrained regression nonlinear problem, which is usually done numerically by an iterative procedure alternating between a relaxed problem and an a posteriori check for constraint violation. This paper proposes an alternative one-stage efficient approach for polynomial regression models based in sum-of-squares (convex) programming. Moreover, it is shown how several desirable features on the regression model can be naturally enforced in this optimization framework. The effectiveness of the proposed ap-proach is illustrated through an academic example provided in the related literature.

关键词： Constrained regression Process models Grey-box models SOS programming

来源：评论

学校读者我要写书评

暂无评论

Robust multi-objective scheduling in an evaporation network 25

Robust multi-objective scheduling in an evaporation network

引用

25th Mediterranean Conference on control and Automation, MED 2017

作者： Palacin, Carlos G. Pitarch, Jose Luis De Prada, Cesar Mendez, Carlos A. Systems Engineering and Automatic Control DPT EII Universidad de Valladolid C/ Real de Burgos s/n Valladolid47011 Spain Giiemes 3450 Santa Fe3000 Argentina

ISBN: (纸本)9781509045334

Considering uncertainty in continuous production processes is key to compute short-time optimal schedules which can be trusted in practice. This paper proposes a two-step stochastic approach to the robust scheduling of several evaporation plants. This approach considers the possibility of reacting in the future once the uncertainty materializes. Each evaporator has different features (capacity, equipment, etc.) and the individual performance is affected by external factors and fouling effects. Moreover, a multi-objective analysis has been carried out to provide a decision support for the operator who must take the concrete decisions about load allocation and cleaning tasks along a time horizon. The problem has been solved by discretizing the time horizon and adapting the general-precedence method to deal with an unknown number of tasks. The nonlinear behavior of each plant is approximated by surrogate linear models obtained experimentally, providing thus solutions in acceptable time. © 2017 IEEE.

关键词： Evaporation

来源：评论

学校读者我要写书评

暂无评论

Erratum to “Modifier Adaptation methodology based on transient and static measurements for RTO to cope with structural uncertainty” [Comput. Chem. Eng. 106 (2017) 480–500]

引用

Computers & Chemical engineering 2018年 108卷 460-460页

作者： T. Rodríguez-Blanco D. Sarabia J.L. Pitarch C. de Prada Dpt. of Systems Engineering and Automatic Control University of Valladolid Doctor Mergelina s/n 47011 Valladolid Spain Dpt. of Electromechanical Engineering University of Burgos Avda. Cantabria s/n 09006 Burgos Spain

来源：评论

学校读者我要写书评

暂无评论

Robust multi-objective scheduling in an evaporation network

Robust multi-objective scheduling in an evaporation network

引用

Mediterranean Conference on control and Automation (MED)

作者： Carlos G. Palacin José Luis Pitarch César de Prada Carlos A. Méndez Systems Engineering and Automatic Control DPT EII Universidad de Valladolid Valladolid Spain Center for Advanced Process Systems Engineering (CAPSE) INTEC (UNL-CONICET) Industrial Engineering DPT (FIQ-UNL) Santa Fe Argentina

ISBN: (纸本)9781509045341

关键词： Cleaning Uncertainty Robustness Job shop scheduling Processor scheduling Computational modeling

来源：评论

学校读者我要写书评

暂无评论

Modifier-Adaptation approach to deal with structural and parametric uncertainty

引用

IFAC-PapersOnLine 2016年第7期49卷 851-856页

作者： Rodríguez-Blanco, T. Sarabia, D. De Prada, C. Dpt of Systems Engineering and Automatic Control University of Valladolid Doctor Mergelina s/n Valladolid47011 Spain Dpt of Electromechanical Engineering University of Burgos Avda. Cantabria s/n Burgos09006 Spain

Real-Time Optimization (RTO) is not always able to achieve optimal process operation due to the presence of significant uncertainty about the plant models that are used to make decisions and also due to the differences between control architecture layers which operate on different time-scales and use different kind of models. To overcome these issues the economic optimization problem is modified following the Modifier Adaptation methodology to bring the process to the real optimum despite the presence of uncertainty by using plant measurements. To deal with parametric and structural plant-model mismatch, a new approach is presented that combines the estimation of process gradients from transient and steady-state information. It speeds up the convergence of Modifier Adaptation methodology to the process optimum. The approach is illustrated through the simulated example of a depropanizer distillation column. © 2016

关键词： Distillation columns Uncertainty analysis control architecture Economic optimization Estimation of process modifier adaptation Parametric uncertainties Plant model mismatches Real time optimization uncertainty

来源：评论

学校读者我要写书评

暂无评论

Autotuning of an in-line pH control system

Autotuning of an in-line pH control system

引用

International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Pedro Mercader Kristian Soltesz Alfonso Baños Dpt. Computer and Systems Engineering University of Murcia Murcia Spain Dpt. Automatic Control Lund University Lund Sweden

A novel autotuning procedure is presented through application to an industrial in-line pH control system. The procedure has three advantages over classical relay auto-tuners: experiment duration is very short (no need for limit-cycle convergence); all data is used for identification (instead of only peaks and switch instances); a parameter uncertainty model is identified and utilized for robust controller synthesis.

关键词： Relays Process control Robustness Switches Limit-cycles Convergence

来源：评论

学校读者我要写书评

暂无评论

Hierarchical Optimal Operation of Continuous-Batch Processes

引用

IFAC-PapersOnLine 2015年第23期48卷 294-301页

作者： De Prada, C. Cristea, S.P. Mazaeda, R. Dpt. of Systems Engineering and Automatic Control University of Valladolid Valladolid47011 Spain

This paper presents a methodology for the optimal operation of mixed continuous-batch processes based on a hierarchical decomposition of the problem: local dynamic optimizers perform the economic optimization of the batch units or continuous plants, while the upper layer deals with the scheduling of the batch units and the coordination of the flows and properties of sub-processes using a novel simplified model built with predictions from the lower level. The approach is illustrated with a case study from the sugar industry corresponding to the joint operation of the evaporation and crystallization sections operated to maximize production with minimum energy consumption. © 2015, IFAC (International Federation of automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Sugar industry Batch data processing Energy utilization Hierarchical systems Optimization Scheduling algorithms Continuous batch Continuous plant Economic optimization Hierarchical control Hierarchical decompositions Minimum energy consumption NMPC Optimal operation

来源：评论

学校读者我要写书评

暂无评论

Modifier-Adaptation methodology for RTO applied to Distillation Columns using a simplified steady-state model

Modifier-Adaptation methodology for RTO applied to Distillat...

引用

IEEE Multi-Conference on systems and control

作者： T. Rodriguez-Blanco D. Sarabia C. de Prada Dpt of Systems Engineering and Automatic Control University of Valladolid Dpt of Electromechanical Engineering University of Burgos

ISBN: (纸本)9781509007561

Real-Time Optimization (RTO) is not always able to achieve optimal process operation due to different reasons, among them the presence of significant uncertainty in the plant models that are used to make decisions or the differences between control architecture layers which operate at different time-scales and use different kind of models. To overcome these issues the economic optimization problem, solved in the RTO layer, is modified following the Modifier Adaptation methodology (MA) to bring the process to the real optimum despite the presence of uncertainty by using plant measurements. This paper presents the implementation of MA methodology to the optimal management of distillation columns as a depropanizer column. Specifically, two approaches have been implemented starting from the traditional gradient-based technique called Dual Modifier Adaptation (DMA) to the recent approach Nested Modifier Adaptation (NMA), updating modifiers at the steady state of the process using static information. The RTO layer is based on a really simplified static model of the process which implies the presence of strong structural plant-model mismatch.

关键词： Distillation columns Modifiers static models real time operating system Steady state Mission Assurance

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：