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Advances in Intelligent Systems and Computing 2013年 183 AISC卷 89-98页

作者： Butka, Peter Pócs, Jozef Pócsová, Jana Sarnovský, Martin Faculty of Electrical Engineering and Informatics Department of Cybernetics and Artificial Intelligence Technical University of Košice Letná 9 04200 Košice Slovakia Mathematical Institute Slovak Academy of Sciences Grešákova 6 040 01 Košice Slovakia BERG Faculty Institute of Control and Informatization of Production Processes Technical University of Košice Boženy Němcovej 3 043 84 Košice Slovakia

ISBN: (纸本)9783642323348

One-sided concept lattices introduce data mining method from the area of Formal Concept Analysis (FCA) for analysis of objects clusters according to the set of fuzzy attributes. Currently, most of the methods for creation of one-sided concept lattices process only data tables with one type of truth value structure. In this chapter we describe closure operator, which corresponds to the intersection of particular closure systems obtained from various object-attribute models with different types of attributes. Each particular closure system is defined via one-sided concept lattices approaches applicated for particular data tables.

关键词： Formal concept analysis

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Design of a 4.5-V, 450-mA Low-Dropout Voltage Linear Regulator Based on a Cascoded OTA

Design of a 4.5-V, 450-mA Low-Dropout Voltage Linear Regulat...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Herminio Martinez-Garcia Antoni Grau-Saldes Yolanda Bolea-Monte Department of Electronics Engineering Technical University of Catalonia (UPC) Dept. of Automatic Control and Ind. Informatics (ESAII) Technical University of Catalonia (UPC)

ISBN: (纸本)9781479902255

This article aims to present the design of a 4.5-V, 450-mA low drop-out (LDO) voltage linear regulator based on a two-stage cascoded operational transconductance amplifier (OTA) as error amplifier. The aforementioned two-stage OTA is designed with cascoded current mirroring technique to boost up the output impedance. The proposed OTA has a DC gain of 101 dB under no load condition. The designed reference voltage included in the LDO regulator is provided by a band gap reference with the temperature coefficient (T_γ) of 0.025 mV/℃. The proposed LDO regulator has a maximum drop-out voltage of 0.5 V @ 450 mA of load current, and has the worst case power supply rejection ratio (PSRR) of [54.5 dB, 34.3 dB] @ [100 Hz, 10 kHz] in full load condition. All the proposed circuits are designed using a 0.35 μm CMOS technology. The design is checked in order to corroborate its performance for wide range of input voltage, founding that the circuit design works fine meeting all the initial specification requirements.

关键词： Low drop-out (LDO) voltage linear regulator Operational transconductance amplifier (OTA) Band gap reference Cascoded current mirror Operational amplifiers Input Voltage Power Supply Rejection Ratio linear quadratic regulators CIRCUIT DESIGN load current Output impedance VOLTAGE voltage reference load condition dubnium decibel CMOS technology

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Imaging method for model-based control of tumor diseases

Imaging method for model-based control of tumor diseases

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International Symposium on Intelligent Systems and informatics (SISY)

作者： B. Kiss J. Sápi L. Kovács Department of Control Engineering and Information Technology Budapest University of Technology and Economics Budapest Hungary John von Neumann Faculty of Informatics Óbuda University Budapest Hungary

Modern approaches of cancer therapies have specific effect on the typical mechanisms of uncontrollably growing and multiplying tumor cells. These targeted therapies can be more efficient than commonly applied methods in clinical practice. Antiangiogenic therapy prevents tumors from forming new blood vessels to ensure sufficient oxygen and nutrients. Without appropriate vascularization, the development of the tumor is inhibited, thus metastasis formation is blocked. In this paper we briefly review the importance of antiangiogenic therapy. To improve mathematical models of tumor growth under angiogenic inhibitors, the process of tumor development must be analyzed. We have chosen Magnetic Resonance Imaging (MRI) to follow up the dynamics of tumor growth and monitor the effect of angiogenic inhibitors. T1-weighted images have been acquired using gradient-echo, spin echo and fast spin echo sequences to examine subcutaneous mouse tumors. We have found that fast spin echo results the best solution: short data acquisition time and good contrast without contrast agent.

关键词： Tumors Magnetic resonance imaging Mice Medical treatment Cancer

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Parameter optimization of H∞ controller designed for tumor growth in the light of physiological aspects

Parameter optimization of H∞ controller designed for tumor ...

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International Symposium on Computational Intelligence and informatics

作者： Johanna Sápi Dániel András Drexler Levente Kovács John von Neumann Faculty of Informatics Obuda University Budapest Hungary Department of Control Engineering and Information Technology Budapest University of Technology and Economics Budapest Hungary

According to the fact that cancer diseases are leading causes of death all around the world, development of cancer fighting therapies is necessary. Beside the medical knowledge, there is an extra need for engineering approach to solve this complex problem. The aim of this paper is to design controller for tumor growth under angiogenic inhibition, which on the one hand minimizes the input signal as far as possible (in order to have less side effects and greater cost-effectiveness) and on the other hand results in appropriately low tumor volume. Since the model contains uncertainties and measurement noise, the controller was designed using modern robust control methodology. Choosing of the ideal system and the weighting functions were done in the light of physiological aspects.

关键词： Tumors Inhibitors Medical treatment Steady-state Robustness Physiology Noise

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Multiagent aerial vehicles system for ecological monitoring

Multiagent aerial vehicles system for ecological monitoring

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IEEE International Workshop on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications

作者： Alexey A. Bobtsov Alexandr S. Borgul Laboratory “Control of Complex Systems” Institute for Problems of Mechanical Engineering St. Petersburg Russia Department of Control Systems and Informatics Saint Petersburg National Research University of Information Technologies Saint Petersburg Russia

A paper describes the multiagent system of aerial vehicles for difficult to access area's ecological monitoring. The main object of this systems applying is exploration of locality in case of technogenic accident and catastrophe, elemental calamity. The system is able to keep the formation during the movement on the optimal trajectory for the fastest exploration of locality. The group of agents is able to be controlled both manually and full-automatically as a result of composite navigational system applying which allows global positioning and local navigation each of agents. All of agents are equipped with the system of sensors and cameras and the data from them can be saved in local agent's memory as well as can be transmitted to the base station in real time. Because of aerial vehicles configuration with high maneuverability and the speed below 24 km/h the system shows high mobility and allows monitor the state of the natural environment as well as indoor area.

关键词： Sensors Trajectory Vehicles Monitoring Robots Temperature measurement Navigation

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Motion control of the six-legged walking robot with unknown inertia matrix *

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IFAC Proceedings Volumes 2013年第9期46卷 234-238页

作者： Maksim O. Surov Anton A. Pyrkin Alexey A. Bobtsov Department of Control Systems and Informatics Saint-Petersburg National Research University of Information Technologies Mechanics and Optics Kronverkskiy av. 49 Saint Petersburg 197101 Russia Department of Engineering Cybernetics Norwegian University of Science and Technology Trondheim NO-7491 Norway Laboratory “Control of Complex Systems” Institute for Problems of Mechanical Engineering St.Petersburg Russia

We propose a new control approach to solve the problem of motion control of six-legged walking robot. Obtained control law does not require knowledge of inertia matrix of the robot. A proof of the asymptotic stability of the robot motion has been provided. To illustrate the effectiveness of the controller a numerical example is shown.

关键词： six-legged robot attitude control velocity control

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Distance Measurement System using Stereo Camera for Automatic Ship control

Distance Measurement System using Stereo Camera for Automati...

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International Conference on control, Automation and Systems

作者： Tadashi Ogura Yoshiaki Mizuchi Yoshinobu Hagiwara Youngbok Kim Akimasa Suzuki Yongwoon Choi Kazuhiro Watanabe Department of Information System Science Soka University Tokyo 192-8577 Japan Principles of Informatics Research Division National Institute of Informatics Tokyo 101-8430 Japan Department of Control & Mechanical Engineering Pukyong National University Busan 608-739 Korea

ISBN: (纸本)9781479905492

A long distance measurement system using a stereo camera mounted on a rotation control device is proposed for automatic ship control, and the performance of the system is presented to verify the usefulness of it. As a solution to prevent ship operators from maritime accidents owing to their strain for a long period, the distance measurement system is often required to automatically control the posture or berthing of a ship. Here, we discuss the system structure suitable for used environment and its experimental results. From the experiment conducted to imagine the distance measurement necessary to altering the posture and translational motion between a ship and its facilities, the average error for the range of 20 to 100 m was less than 1 percent.

关键词： distance measurement stereo camera image matching ocean vehicle automatic ship control

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An Adaptive control Strategy for Managing Concurrent Service Requests in Service-Based Systems

An Adaptive Control Strategy for Managing Concurrent Service...

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IEEE Annual Computer Software and Applications Conference Workshops (COMPSACW)

作者： Wen-Long Zhu Bei-Bei Yin Kai-Yuan Cai Dazhi Huang Stephen S. Yau Department of Automatic Control Beijing University of Aeronautics and Astronautics Beijing China School of Computing Informatics & Decision Systems Engineering Arizona State University Tempe AZ USA

Service-Oriented Architecture (SOA) has attracted substantial research effort over the past decade. In service-based systems, where multiple services providing the same functionality are available, it is necessary to select the appropriate services to be used in service composition to provide better quality of service (QoS) for service consumers. In order to select the best service composition for concurrent service requests, we present an adaptive control strategy which performs service selection based on the historical usage information of all the candidate services. A case study of a data stream management system is presented to validate the effectiveness of the adaptive control strategy, and examine the effect of the concurrency level on the process of the strategy's decision.

关键词： Adaptive control Quality of service Concurrent computing Digital audio players Time factors Software Process control

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Predictive model reference control based on discrete laguerre network with integrator

Predictive model reference control based on discrete laguerr...

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International Conference on Process control (PC)

作者： J. Škultéty E. Miklovičová R. Bars Faculty of Electrical Engineering and Information Technology Slovak University of Technology Bratislava Slovakia Department of Automation and Applied Informatics Control Engineering Research Group of the HAS Budapest University of Technology and Economics Budapest Hungary

In the paper predictive model reference control based on Laguerre network using the closed loop with integrator is presented. The performances of this control structure are compared with those of the internal model co... 详细信息

关键词： Predictive models control design Liquids Mathematical model Simulation Adaptation models

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Bearing Fault Classification Based on Minimum Volume Ellipsoid Feature Extraction

Bearing Fault Classification Based on Minimum Volume Ellipso...

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IEEE Multi-Conference on Systems and control

作者： Mohammed Obaid Mustafa G. Georgoulas G. Nikolakopoulos the Control Engineering Group in the Department of Computer Electrical and Space Engineering Lule? University of Technology SE-97187 Lule? Sweden. the Department of Informatics and Communications Technology Technical Educational Institute of Epirus 47100 Artas Kostakioi Greece.

ISBN: (纸本)9781479915583

This article presents a novel fault classification and diagnosis technique for bearings based on a Minimum Volume Ellipsoid (MVE) method for feature extraction. Data from two accelerometers located at two different sites of the test bed are combined to create a two dimensional representation and the feature extraction stage condenses that information using an ellipsoid description. The proposed features feed a simple non-linear classifier which separates almost perfectly between normal and faulty conditions, with also very high diagnostic accuracy between the faulty classes. The obtained results suggest that this novel representation can be used within a condition monitoring system.

关键词： monitoring condenses ellipsoid

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