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Author: Werner Leonhard
Publisher: Springer Science & Business Media
ISBN: 9783540418207
Category : Technology & Engineering
Languages : en
Pages : 484
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Book Description
Electrical drives play an important role as electromechanical energy convert ers in transportation, material handling and most production processes. The ease of controlling electrical drives is an important aspect for meeting the in creasing demands by the user with respect to flexibility and precision, caused by technological progress in industry as well as the need for energy conser vation. At the same time, the control of electrical drives has provided strong incentives to control engineering in general, leading to the development of new control structures and their introduction to other areas of control. This is due to the stringent operating conditions and widely varying specifications - a drive may alternately require control of torque, acceleration, speed or position - and the fact that most electric drives have - in contrast to chem ical or thermal processes - well defined structures and consistent dynamic characteristics. During the last years the field of controlled electrical drives has undergone rapid expansion due mainly to the advances of semiconductors in the form of power electronics as well as analogue and digital signal electronics, eventu ally culminating in microelectronics and microprocessors. The introduction of electronically switched solid-state power converters has renewed the search for adjustable speed AC motor drives, not subject to the limitations of the mechanical commutator of DC drives which dominated the field for a century.
Author: Werner Leonhard
Publisher: Springer Science & Business Media
ISBN: 9783540418207
Category : Technology & Engineering
Languages : en
Pages : 484
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Book Description
Electrical drives play an important role as electromechanical energy convert ers in transportation, material handling and most production processes. The ease of controlling electrical drives is an important aspect for meeting the in creasing demands by the user with respect to flexibility and precision, caused by technological progress in industry as well as the need for energy conser vation. At the same time, the control of electrical drives has provided strong incentives to control engineering in general, leading to the development of new control structures and their introduction to other areas of control. This is due to the stringent operating conditions and widely varying specifications - a drive may alternately require control of torque, acceleration, speed or position - and the fact that most electric drives have - in contrast to chem ical or thermal processes - well defined structures and consistent dynamic characteristics. During the last years the field of controlled electrical drives has undergone rapid expansion due mainly to the advances of semiconductors in the form of power electronics as well as analogue and digital signal electronics, eventu ally culminating in microelectronics and microprocessors. The introduction of electronically switched solid-state power converters has renewed the search for adjustable speed AC motor drives, not subject to the limitations of the mechanical commutator of DC drives which dominated the field for a century.
Author: Hubert Razik
Publisher: John Wiley & Sons
ISBN: 1118600932
Category : Technology & Engineering
Languages : en
Pages : 336
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Book Description
This handbook deals with the asynchronous machine in its close environment. It was born from a reflection on this electromagnetic converter whose integration in industrial environments takes a wide part. Previously this type of motor operated at fixed speed, from now on it has been integrated more and more in processes at variable speed. For this reason it seemed useful, or necessary, to write a handbook on the various aspects from the motor in itself, via the control and while finishing by the diagnosis aspect. Indeed, an asynchronous motor is used nowadays in industry where variation speed and reliability are necessary. We must know permanently for the sensitive systems, the state of process and to inform the operator of the appearance of any anomaly and its severity.
Author: Institute of Electrical and Electronics Engineers
Publisher:
ISBN:
Category : Electric engineering
Languages : en
Pages : 1270
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Book Description
Issues for 1973- cover the entire IEEE technical literature.
Author: Tzyh-Jong Tarn
Publisher: Springer Science & Business Media
ISBN: 3540733736
Category : Technology & Engineering
Languages : en
Pages : 1091
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Book Description
Robotic welding systems have been used in different types of manufacturing. They can provide several benefits in welding applications. The most prominent advantages of robotic welding are precision and productivity. Another benefit is that labor costs can be reduced. Robotic welding also reduces risk by moving the human welder/operator away from hazardous fumes and molten metal close to the welding arc. The robotic welding system usually involves measuring and identifying the component to be welded, we- ing it in position, controlling the welding parameters and documenting the produced welds. However, traditional robotic welding systems rely heavily upon human interv- tion. It does not seem that the traditional robotic welding techniques by themselves can cope well with uncertainties in the welding surroundings and conditions, e. g. variation of weld pool dynamics, fluxion, solid, weld torch, and etc. On the other hand, the advent of intelligent techniques provides us with a powerful tool for solving demanding re- world problems with uncertain and unpredictable environments. Therefore, it is intere- ing to gather current trends and to provide a high quality forum for engineers and researchers working in the filed of intelligent techniques for robotic welding systems. This volume brings together a broad range of invited and contributed papers that describe recent progress in this field.
Author: Jean-Paul Louis
Publisher: John Wiley & Sons
ISBN: 1118603192
Category : Technology & Engineering
Languages : en
Pages : 303
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Book Description
Classical synchronous motors are the most effective device to drive industrial production systems and robots with precision and rapidity. However, numerous applications require efficient controls in non-conventional situations. Firstly, this is the case with synchronous motors supplied by thyristor line-commutated inverters, or with synchronous motors with faults on one or several phases. Secondly, many drive systems use non-conventional motors such as polyphase (more than three phases) synchronous motors, synchronous motors with double excitation, permanent magnet linear synchronous motors, synchronous and switched reluctance motors, stepping motors and piezoelectric motors. This book presents efficient controls to improve the use of these non-conventional motors. Contents 1. Self-controlled Synchronous Motor: Principles of Function and Simplified Control Model, Francis Labrique and François Baudart. 2. Self-controlled Synchronous Motor: Dynamic Model Including the Behavior of Damper Windings and Commutation Overlap, Ernest Matagne. 3. Synchronous Machines in Degraded Mode, Damien Flieller, Ngac Ky Nguyen, Hervé Schwab and Guy Sturtzer. 4. Control of the Double-star Synchronous Machine Supplied by PWM Inverters, Mohamed Fouad Benkhoris. 5. Vectorial Modeling and Control of Multiphase Machines with Non-salient Poles Supplied by an Inverter, Xavier Kestelyn and Éric Semail. 6. Hybrid Excitation Synchronous Machines, Nicolas Patin and Lionel Vido. 7. Advanced Control of the Linear Synchronous Motor, Ghislain Remy and Pierre-Jean Barre. 8. Variable Reluctance Machines: Modeling and Control, Mickael Hilairet, Thierry Lubin and Abdelmounaïm Tounzi. 9. Control of the Stepping Motor, Bruno Robert and Moez Feki . 10. Control of Piezoelectric Actuators, Frédéric Giraud and Betty Lemaire-Semail.
Author: Wendell H. Chun
Publisher: CRC Press
ISBN: 1040116167
Category : Computers
Languages : en
Pages : 335
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Book Description
Artificial intelligence (AI) is a complicated science that combines philosophy, cognitive psychology, neuroscience, mathematics and logic (logicism), economics, computer science, computability, and software. Meanwhile, robotics is an engineering field that compliments AI. There can be situations where AI can function without a robot (e.g., Turing Test) and robotics without AI (e.g., teleoperation), but in many cases, each technology requires each other to exhibit a complete system: having "smart" robots and AI being able to control its interactions (i.e., effectors) with its environment. This book provides a complete history of computing, AI, and robotics from its early development to state‐of‐the‐art technology, providing a roadmap of these complicated and constantly evolving subjects. Divided into two volumes covering the progress of symbolic logic and the explosion in learning/deep learning in natural language and perception, this first volume investigates the coming together of AI (the mind) and robotics (the body), and discusses the state of AI today. Key Features: Provides a complete overview of the topic of AI, starting with philosophy, psychology, neuroscience, and logicism, and extending to the action of the robots and AI needed for a futuristic society Provides a holistic view of AI, and touches on all the misconceptions and tangents to the technologies through taking a systematic approach Provides a glossary of terms, list of notable people, and extensive references Provides the interconnections and history of the progress of technology for over 100 years as both the hardware (Moore’s Law, GPUs) and software, i.e., generative AI, have advanced Intended as a complete reference, this book is useful to undergraduate and postgraduate students of computing, as well as the general reader. It can also be used as a textbook by course convenors. If you only had one book on AI and robotics, this set would be the first reference to acquire and learn about the theory and practice.
Author: Karl-Heinz Hoffmann
Publisher: Springer Science & Business Media
ISBN: 3662073226
Category : Technology & Engineering
Languages : en
Pages : 138
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Book Description
The 4th caesarium brought together world known experts reporting the state-of-the-art of Functional Micro-and Nanosystems. Its purpose was to identify and open up new research directions in this rapidly evolving new area and to discuss the potential with respect to applications in automotive, biochemical and information technology. Thin film technologies are an attractive approach to incorporate functional properties into micro- or nano-systems. The continuing development towards smaller structures is driven by the use of higher driving frequencies and thus smaller wavelengths, the growing integration of different functions, the higher degree of parallelism, and size requirements for the detection of bio-molecules. Hence this new technology opens up new possibilities in terms of high frequency wireless data transmission over long distances, sensors showing high spatial and time resolution and new devices to process biological, optical and electrical signals.
Author: Fabrice Jotterand
Publisher: Oxford University Press
ISBN: 0190459816
Category : Medical
Languages : en
Pages : 321
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Book Description
The financial burden and the level of specialized care required to look after older adults with dementia has reached the point of a public health crisis. Older adults diagnosed and living with the disorder reached 35.6 million worldwide in 2010 and is expected to increase to 135.5 million in 2050, with costs soaring to $1.1 trillion. In the face of the increasing burden this disorder poses to health care systems and the management of this patient population, intelligent assistive technologies (IATs) represent a remarkable and promising strategy to meet the need of persons suffering from dementia. These technologies aim at helping individuals compensate for specific physical and cognitive deficits, and maintain a higher level of independence at home and in everyday activities. However, the rapid development and widespread implementation of these technologies are not without associated challenges at multiple levels. An international and multidisciplinary group of authors provide future-oriented and in-depth analysis of IATs. Part I delineates the current landscape of intelligent assistive technologies for dementia care and age-related disability from a global perspective, while the contributions in Part II analyze and address the major psycho-social implications linked to the development and clinical use of IATs. In the last section, essays examine the major ethical, social and regulatory issues associated with the use of IATs in dementia care. This volume provides an authoritative and comprehensive overview of how IATs are reshaping dementia care.
Author: Raúl Baños Navarro
Publisher: MDPI
ISBN: 3039439014
Category : Technology & Engineering
Languages : en
Pages : 155
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Book Description
This book includes original research papers related to renewable energy and power systems in which theoretical or practical issues of symmetry are considered. The book includes contributions on voltage stability analysis in DC networks, optimal dispatch of islanded microgrid systems, reactive power compensation, direct power compensation, optimal location and sizing of photovoltaic sources in DC networks, layout of parabolic trough solar collectors, topologic analysis of high-voltage transmission grids, geometric algebra and power systems, filter design for harmonic current compensation. The contributions included in this book describe the state of the art in this field and shed light on the possibilities that the study of symmetry has in power grids and renewable energy systems.
Author: Md. Mizanur Rahman
Publisher: Springer Nature
ISBN: 981977117X
Category :
Languages : en
Pages : 230
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Book Description
