Permanent Magnet Spherical Motors
Permanent Magnet Spherical Motors

Author: Kun Bai

Publisher: Springer

Published: 2018-03-20

Total Pages: 170

ISBN-13: 9811079625

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This book introduces and illustrates modeling, sensing, and control methods for analyzing, designing, and developing spherical motors. It systematically presents models for establishing the relationships among the magnetic fields, position/orientation and force/torque, while also providing time-efficient solutions to assist researchers and engineers in studying and developing these motors. In order to take full advantage of spherical motors’ compact structure in practical applications, sensing and control methods that utilize their magnetic fields and eliminate the need to install external sensors for feedback are proposed. Further, the book investigates for the first time spherical motors’ force/torque manipulation capability, and proposes algorithms enabling the ball-joint-like end-effector for haptic use based on these motors’ hybrid position/force actuation modes. While systematically presenting approaches to their design, sensing and control, the book also provides many examples illustrating the implementation issues readers may encounter.

Direct Field-feedback Control for Permanent Magnet Spherical Motors
Direct Field-feedback Control for Permanent Magnet Spherical Motors

Author: Kun Bai

Publisher:

Published: 2012

Total Pages:

ISBN-13:

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There are emerging requirements for high accuracy multi-DOF actuators in numerous applications. As one of the novel motors capable of multi-DOF manipulation, permanent magnet spherical motors (PMSMs) that can provide continuous and dexterous motion in one joint have been widely studied for their advantages in structure and energy efficiency. The demands to bring forward the performance of PMSMs for precision applications have motivated this thesis to develop a closed-loop orientation control system with high accuracy and bandwidth. Unlike traditional control methods for PMSMs, which rely on explicit orientation feedback, a new control method (referred to here as direct field-feedback control or in short DFC) directly utilizing the magnetic fields for feedback have been developed in this thesis. Because magnetic field measurements are almost instantaneous and the need for real-time orientation estimation is eliminated in DFC, the system sampling time is greatly reduced. Meanwhile, several field-based methods have been developed for the major components in the DFC system and each component can be processed independently and concurrently with the magnetic field measurements. The parallel computation further improves the system bandwidth and also reduces accumulated error. The DFC system has been experimentally implemented and evaluated. The results show excellent control performances in terms of accuracy and bandwidth. To facilitate the design and analysis of the DFC system, several new algorithms have been developed, which include the modeling and computing of magnetic fields as well as forces and torques, an analysis of bijective relationship between orientation and magnetic fields, and a method for calibration and reconstruction of the rotor magnetic field in 3 dimensional space. These algorithms not only enable the implementation of the DFC system for a PMSM, but also benefit the PMSM studies in design, modeling and field-based sensing. While the immediate outcome of this research is a control system for PMSMs, this new control method can be applied to a broad spectrum of electromagnetic motion systems.

Permanent Magnet Motor Technology
Permanent Magnet Motor Technology

Author: Jacek F. Gieras

Publisher: CRC Press

Published: 2009-08-25

Total Pages: 591

ISBN-13: 1439859019

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The importance of permanent magnet (PM) motor technology and its impact on electromechanical drives has grown exponentially since the publication of the bestselling second edition. The PM brushless motor market has grown considerably faster than the overall motion control market. This rapid growth makes it essential for electrical and electromechanical engineers and students to stay up-to-date on developments in modern electrical motors and drives, including their control, simulation, and CAD. Reflecting innovations in the development of PM motors for electromechanical drives, Permanent Magnet Motor Technology: Design and Applications, Third Edition demonstrates the construction of PM motor drives and supplies ready-to-implement solutions to common roadblocks along the way. This edition supplies fundamental equations and calculations for determining and evaluating system performance, efficiency, reliability, and cost. It explores modern computer-aided design of PM motors, including the finite element approach, and explains how to select PM motors to meet the specific requirements of electrical drives. The numerous examples, models, and diagrams provided in each chapter facilitate a lucid understanding of motor operations and characteristics. This 3rd edition of a bestselling reference has been thoroughly revised to include: Chapters on high speed motors and micromotors Advances in permanent magnet motor technology Additional numerical examples and illustrations An increased effort to bridge the gap between theory and industrial applications Modified research results The growing global trend toward energy conservation makes it quite possible that the era of the PM brushless motor drive is just around the corner. This reference book will give engineers, researchers, and graduate-level students the comprehensive understanding required to develop the breakthroughs that will push this exciting technology to the forefront.

Permanent Magnet Motor Technology
Permanent Magnet Motor Technology

Author: Jacek F. Gieras

Publisher: CRC Press

Published: 2002-01-22

Total Pages: 1312

ISBN-13: 9780824743949

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Co-authored by a world-renowned expert in the field, Permanent Magnet Motor Technology: Design and Applications, Second Edition demonstrates the construction of PM motor drives and supplies ready-to-implement solutions for common roadblocks. The author presents fundamental equations and calculations to determine and evaluate system performance, efficiency, and reliability; explores modern computer-aided design of PM motors, including the finite element approach; and covers how to select PM motors to meet the specific requirements of electrical drives. The numerous examples, models, and diagrams provided in each chapter give the reader a clear understanding of motor operations and characteristics.

Control of Permanent Magnet Synchronous Motors
Control of Permanent Magnet Synchronous Motors

Author: Sadegh Vaez-Zadeh

Publisher: Oxford University Press

Published: 2018

Total Pages: 365

ISBN-13: 0198742967

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Permanent magnet synchronous (PMS) motors stand at the forefront of electric motor development due to their energy saving capabilities and performance potential. This book is a timely advancement along that path as the first comprehensive, self-contained, and thoroughly up-to-date book devoted solely to the control of PMS motors.

Brushless Permanent-magnet Motor Design
Brushless Permanent-magnet Motor Design

Author: Duane C. Hanselman

Publisher: McGraw-Hill Companies

Published: 1994

Total Pages: 216

ISBN-13:

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Written for electrical, electronics, & mechanical engineers responsible for designing & specifying motors, the book provides details of brushless DC & synchronous motors, as well as both radial & axial motor topologies. Beginning with a discussion of the fundamentals of generic motor design, it logically progresses to a set of more advanced, yet easily understandable, concepts for designing brushless permanent-magnet motors. In addition, the author fully explains techniques for magnetic modeling & circuit analysis, shows how magnetic circuit analysis applies to motor design, describes all major aspects of motor operation & design in simple mathematical terms, develops rigorous design equations for radial flux & axial flux motors, & illustrates basic motor drive schemes. All common motor design terms are clearly defined & a wealth of charts, tables & equations are included.

Permanent-Magnet DC Linear Motors
Permanent-Magnet DC Linear Motors

Author: Amitava Basak

Publisher: Clarendon Press

Published: 1996-02-22

Total Pages: 202

ISBN-13: 0191589241

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No standard work of reference, dealing with dc linear motor in all its aspects has ever been published. However, a considerable amount of literature in the form of published papers dealing with this subject, and also an amount of hitherto unpublished work, particularly of an industrial or applied nature, has been accumulated during the last 25 years. An attempt has been made to collate all this information and present it in a comprehensive and orderly manner in this unique volume. This book has been designed to be useful to two main categories of readers, namely, electrical and mechanical engineers in the user industries, and post-graduates and students embracing mechanical and electrical engineers.

Permanent Magnet Reluctance & Self Synchronous Motors
Permanent Magnet Reluctance & Self Synchronous Motors

Author: Syed A. Nasar

Publisher: Springer

Published: 1993-03-17

Total Pages: 296

ISBN-13:

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Permanent Magnet, Reluctance, and Self-Synchronous Motors discusses the theory, design, and control of permanent magnet materials. The book describes permanent magnets and their applications to electric machines as well as their performance characteristics and limitations. It presents the performance and calculations of PM commutator motors and an approach to their design. Permanent magnet synchronous motors, finite-element calculations, design methodologies, and rectangular and sinusoidal current control are discussed. It presents reluctance motors, their topologies and performance analyses as well as reluctance synchronous motors, with very large rotor saliency ratios, and their vector control. Numerical examples and data of practical interest are provided throughout the book. The book will be very useful to engineers involved in the design and manufacturing of permanent magnet and reluctance motors and high-performance drives, as well as electrical engineering students and educators.