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Sensorless nonlinear control of fed-batch Escherichia coli cultivation bioprocess using the state-dependent approach 12th

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12th Portuguese Conference on automatic control, controlO 2016

作者： Iratni, Abdelhamid Araújo, Rui Rastegar, Saeid Mostefai, Mohammed Faculty of Science and Technology Electrical Engineering Department University of Bordj Bou Arreridj El Anasser Algeria Department of Electrical and Computer Engineering Institute for Systems and Robotics University of Coimbra Coimbra Portugal Automatic Control Laboratory of Setif Electrical Engineering Department Faculty of Technology University of Setif1 Sétif Algeria

ISBN: (纸本)9783319436708

The cultivation of Escherichia coli bacteria is widely used by geneticists and biopharmaceuticals to produce medicines and vaccines. In such industries, Bioprocesses are known by their harsh environment and very expensive physical sensors. This paper deals with nonlinear estimation and control of fed-batch Escherichia coli bioprocess. Enhancing the process performance and maximizing its efficiency by optimizing the control of Escherichia coli cultures depends on the availability of appropriate online sensors for the main culture components. In this study, an innovative method for nonlinear estimation and control of bioprocesses is designed and assessed. The new algorithm for control and estimation of Escherichia coli bioprocess states, based on the State-Dependent Riccati Equation technique, is validated by numerical simulation. The results obtained clearly demonstrate the effectiveness of the proposed technique for Biosystems in measuring, monitoring, and control of their natural nonlinear dynamics. © Springer International Publishing Switzerland 2017.

关键词： Extended Kalman filters

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Exergoeconomics in the sanitary-ware industry to reduce energy and water consumptions

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AIP Conference Proceedings 2019年第1期2190卷

作者： Carlos Cuviella-Suárez Jorge Juan Blanes Peiró David Borge-Diez Antonio Colmenar-Santos 1Department of Electrical Electronic and Control Engineering UNED. Juan del Rosal 12 – University City. 28040 Madrid – Spain 2Department of Electrical and Systems and Automatic Engineering. University of León School of Industrial and Computer Engineering Campus of Vegazana s/n 24071 León Spain

Ceramic sanitary-ware manufacturing is an industrial sector within the ceramic field that globally demands more than 100,000 TJ of primary energy and 21,000 dam3 of water per year. This research aims to quantify the reachable level of improvement within this industrial field by application of thermal engineering through the different thermal processes along the manufacturing line and the way to apply it to recover the water of the process and reduce the total consumption of primary energy. Advanced exergetic analysis has been the selected technique applied to all thermal sub-processes that comprise the overall process. The novelty of this research lays on the application of heat recovery through the different thermal processes to minimize the global consumption of both, energy and water for the specific field of the sanitary-ware manufacturing where no research has been approached in this regard. This research shows that 20% of the inlet exergy in a conventional factory is recoverable and the way to achieve it by an optimized factory which saves 3% of primary energy and 100% of the flushing water for molds.

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Preface

Lecture Notes in Electrical Engineering

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Lecture Notes in Electrical engineering 2019年 561卷 v-vi页

作者： Fleming, Peter Sanei, Saeid Jakobsson, Andreas Lacquet, Beatrys Margaretha Deb, Kalyanmoy Department of Automatic Control and Systems Engineering University of Sheffield Sheffield United Kingdom Department of Computer Science University of Surrey Guildford United Kingdom Department of Mathematical Statistics Lund University Lund Sweden Transnet Centre of Systems Engineering University of the Witwatersrand Wits South Africa Michigan State University East LansingMI United States

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Improvement of the Barkhausen criterion and the implementation of an intelligent function generator

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Journal of engineering 2017年第4期2017卷 126-138页

作者： Lin, Chia-Wei Chen, Yen-Ting Chen, Ying-Chen Chen, Chung-Cheng Department of Electrical Engineering National Cheng Kung University 1 University Road Tainan701 Taiwan Department of Automatic Control Engineering Feng Chia University 100 Wenhwa Road Seatwen Taichung40724 Taiwan Department of Electrical and Computer Engineering University of Texas at Austin 10100 Burnet Road AustinTX78758 United States Department of Electrical Engineering Hwa Hsia University of Technology 111 Gong Jhuan Road Chung Ho New Taipei City235 Taiwan

Function generators are vital tools for many industrial applications. Sinusoidal oscillators are the essential units of function generators and investigating their performance is therefore necessary. The Barkhausen criterion is widely applied in designing sinusoidal oscillators because of its simplicity. The authors exploit a crucial necessary and sufficient oscillation criterion for Wien Bridge and Colpitts oscillators based on Simple Chen's Electric Unifying Approach. Their approach resolves the shortcoming of the traditional Barkhausen criterion, namely that it entails only a necessary condition. They propose a simple oscillation determining criterion that uses a stable sine-wave oscillator with an adjustable oscillation frequency. The derived oscillation criterion establishes a precise condition for the existence of oscillatory behaviour and does not require the fixed value used in the traditional Barkhausen criterion. To demonstrate its applicability, the proposed approach for the Wien Bridge and Colpitts oscillators is applied to implement a function generator. © 2017 Institution of engineering and Technology. All rights reserved.

关键词： Bridge circuits

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Assessment of the Energy Characteristic of the Terrace House

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IOP Conference Series: Materials Science and engineering 2019年第5期471卷

作者： Urszula Pawlak Marcin Pawlak Department of Mechanics Metal Structures and Computer Methods Faculty of Civil and Architecture Kielce University of Technology al. 1000-lecia Państwa Polskiego 7 25-314 Kielce Poland Department of Power Engineering Electronics Faculty of Electrical Engineering Automatic Control and Computer Kielce University of Technology al. 1000-lecia Państwa Polskiego 7 25-314 Kielce Poland

In the article, the energy characteristics of a terraced house located in Kielce were assessed. The analyzed house was put into use in 1982. Due to the old manufacturing technology, mainly in the area of the materials used, to limit significant heat losses, it has been thermally renewed many times. The aim of the calculations was to indicate the financial benefits, in example to reduce the costs of maintaining the house and to provide its residents with the proper comfort of use of the building, also taking into account the health aspects. The analysis of the object was made in several stages. Proposed are changes reducing the demand for non-renewable primary energy Ep, using modern thermal insulation materials, joinery with low heat transfer coefficient and renewable energy sources. As a result, an energy-efficient building that meets WT 2017 was obtained. The annual demand for non-renewable primary energy EP was determined using the Certo 2015 program in educational version 1.3.3.0.

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Data-driven gradient algorithm for high-precision quantum control

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Physical Review A 2018年第4期97卷 042122-042122页

作者： Re-Bing Wu Bing Chu David H. Owens Herschel Rabitz Department of Automation Tsinghua University Beijing 100084 China Center for Quantum Information Science and Technology BNRist Beijing 100084 China School of Electronic and Computer Science University of Southampton Southampton SO17 1BJ United Kingdom Department of Automation Zhengzhou University Zhengzhou 450001 China Department of Automatic Control and Systems Engineering University of Sheffield Mappin Street Sheffield S1 3JD United Kingdom Department of Chemistry Princeton University Princeton 08544 NJ United States

In the quest to achieve scalable quantum information processing technologies, gradient-based optimal control algorithms (e.g., grape) are broadly used for implementing high-precision quantum gates, but their performance is often hindered by deterministic or random errors in the system model and the control electronics. In this paper, we show that grape can be taught to be more effective by jointly learning from the design model and the experimental data obtained from process tomography. The resulting data-driven gradient optimization algorithm (d-grape) can in principle correct all deterministic gate errors, with a mild efficiency loss. The d-grape algorithm may become more powerful with broadband controls that involve a large number of control parameters, while other algorithms usually slow down due to the increased size of the search space. These advantages are demonstrated by simulating the implementation of a two-qubit controlled-not gate.

关键词： Quantum control Quantum gates

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A hybrid systems framework for multi agent task planning and control

A hybrid systems framework for multi agent task planning and...

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American control Conference

作者： Maria Guinaldo Dimos V. Dimarogonas Department of Computer Sciences and Automatic Control School of Computer Engineering UNED Madrid Spain ACCESS Linneaeus Center School of Electrical Engineering KTH Stockholm Sweden

ISBN: (纸本)9781509045839

In this paper, we investigate the coordination of a multi-agent system to achieve a high level plan. In, particular, we assume that this planning is decomposed in a sequence of simple control objectives. The coordination is carried out through event-based communications between the agents, and distributed control laws are synthesized to achieve each control objective according to a time-constraint. All the elements (planning, motion, and communication) are integrated in a hybrid systems framework, which also allows to conclude about the achievement of the high level plan.

关键词： hybrid systems Agents Multi-agent systems Communication Research Planning Standing Orders Frameworks communication between animals Event-based

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Performance tradeoffs of dynamically controlled grid-connected inverters in low inertia power systems

Performance tradeoffs of dynamically controlled grid-connect...

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IEEE Annual Conference on Decision and control

作者： Yan Jiang Richard Pates Enrique Mallada Department of Electrical and Computer Engineering Johns Hopkins University Baltimore MD USA Department of Automatic Control Lund University Lund Sweden

Implementing frequency response using grid-connected inverters is one of the popular proposed alternatives to mitigate the dynamic degradation experienced in low inertia power systems. However, such solution faces several challenges as inverters do not intrinsically possess the natural response to power fluctuations that synchronous generators have. Thus, to synthetically generate this response, inverters need to take frequency measurements, which are usually noisy, and subsequently make changes in the output power, which are therefore delayed. This paper explores the system-wide performance tradeoffs that arise when measurement noise, delayed actions, and power disturbances are considered in the design of dynamic controllers for grid-connected inverters. Using a recently proposed dynamic droop (iDroop) control for grid-connected inverters that is inspired by classical first order lead-lag compensation, we show that the sets of parameters that result in highest noise attenuation, power disturbance mitigation, and delay robustness do not necessarily have a common intersection. In particular, lead compensation is desired in systems where power disturbances are the predominant source of degradation, while lag compensation is a better alternative when the system is dominated by delays or frequency noise. Our analysis further shows that iDroop can outperform the standard droop alternative in both joint noise and disturbance mitigation, and delay robustness.

关键词： Power system dynamics Inverters Frequency measurement Delays Noise measurement Generators Power measurement

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USMED and Surgery Assist: IMAGO MOL Cluster Biomedical Solutions to Improve Patient Imaging Availability and Noninvasive Diagnosis

USMED and Surgery Assist: IMAGO MOL Cluster Biomedical Solut...

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E-Health and Bioengineering Conference (EHB)

作者： Vlad Ghizdovat Lucian Nita Paul Herghelegiu Simona Caraiman Alina Capitanu Carmeni Mihai Cati Stolniceanu Jalloul Wael Delia Ciobanu Lidia Ionescu Irena-Cristina Grierosu Cipriana Stefanescu Biophysics Dept. “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania SC ROMSOFT SRL Iasi Romania Faculty of Automatic Control and Computer Engineering “Gheorghe Asachi” Technical University of Iasi Iasi Romania North East RDA Piatra Neamt Romania Imago-Mol Cluster Iaşi Romania “Sf. Spiridon” Emergency County Hospital Nuclear Medicine Laboratory Iasi Romania Department of Pathology “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania 3rd Surgery Department “Sf. Spiridon” Emergency County Hospital Iasi Romania Imago Mol Cluster “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania

For patient well-being and also for cost efficiency, constantly improving the medical act is essential. All patients undergo a set of medical tests before going into surgery. In some cases, these tests have to be repeated in different hospitals due to the lack of a system that facilitates presenting and sharing patient's data. We present two e-Health solutions for hospitals and clinics in the medical data field. Our aim was to design and implement a unique system for medical data management. This system allows easy data transfer between medical facilities. It also improves the medical diagnostic and treatment process and it increases the quality of medical care. Also, it improves the communication between patients and physicians, decreases the duration and costs of hospitalization and improves the patient's quality of life. The second medical solution presented in this paper present the results of the medical tests directly to a screen in the operating room, further reducing the time a patient has to wait before going into surgery and also improving the medical act. Both medical solutions were tested in real-world scenarios with promising results.

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Structured decentralized control of positive systems with applications to combination drug therapy and leader selection in directed networks

arXiv

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arXiv 2017年

作者： Dhingra, Neil K. Colombino, Marcello Jovanović, Mihailo R. Department of Electrical and Computer Engineering University of Minnesota Automatic Control Laboratory Eth Zürich Ming Hsieh Department of Electrical Engineering University of Southern California

We study a class of structured optimal control problems in which the main diagonal of the dynamic matrix is a linear function of the design variable. While such problems are in general challenging and nonconvex, for positive systems we prove convexity of the H2and H∞ optimal control formulations which allow for arbitrary convex constraints and regularization of the control input. Moreover, we establish differentiability of the H∞ norm when the graph associated with the dynamical generator is weakly connected and develop a customized algorithm for computing the optimal solution even in the absence of differentiability. We apply our results to the problems of leader selection in directed consensus networks and combination drug therapy for HIV treatment. In the context of leader selection, we address the combinatorial challenge by deriving upper and lower bounds on optimal performance. For combination drug therapy, we develop a customized subgradient method for efficient treatment of diseases whose mutation patterns are not connected. Copyright © 2017, The Authors. All rights reserved.

关键词： Disease control

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