Download or read book Design of a Rotating Permanent Magnet System for 5 DOF Control of Micro robots written by Patrick Ryan and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent work in magnetically-actuated micro-scale robots for biomedical and microfluidic applications has resulted in magnetic actuation systems which can remotely command precise five-degree-of-freedom control of magnetic devices. The objective of this work is to evaluate the capabilities and limitations of these existing systems and to provide a more complete understanding regarding the limits of field generation. As part of this study, a novel actuation system composed of an array of rotating permanent magnets with the potential for increased field and gradient strength, and minimal heat generation is presented. The nonlinear control input-output relationship is modeled, a technique to determine the control inputs is developed, and an optimization framework for designing system configurations for targeted applications is shown. A proof-of-concept prototype system is used to demonstrate the feasibility of this type of actuation by performing three standard microrobotic locomotion methods requiring independent control over the applied magnetic fields and forces in three dimensions.

Download or read book Permanent Magnet Spherical Motors written by Kun Bai and published by Springer. This book was released on 2018-03-20 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Mobile Microrobotics written by Metin Sitti and published by MIT Press. This book was released on 2017-06-16 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first textbook on micron-scale mobile robotics, introducing the fundamentals of design, analysis, fabrication, and control, and drawing on case studies of existing approaches. Progress in micro- and nano-scale science and technology has created a demand for new microsystems for high-impact applications in healthcare, biotechnology, manufacturing, and mobile sensor networks. The new robotics field of microrobotics has emerged to extend our interactions and explorations to sub-millimeter scales. This is the first textbook on micron-scale mobile robotics, introducing the fundamentals of design, analysis, fabrication, and control, and drawing on case studies of existing approaches. The book covers the scaling laws that can be used to determine the dominant forces and effects at the micron scale; models forces acting on microrobots, including surface forces, friction, and viscous drag; and describes such possible microfabrication techniques as photo-lithography, bulk micromachining, and deep reactive ion etching. It presents on-board and remote sensing methods, noting that remote sensors are currently more feasible; studies possible on-board microactuators; discusses self-propulsion methods that use self-generated local gradients and fields or biological cells in liquid environments; and describes remote microrobot actuation methods for use in limited spaces such as inside the human body. It covers possible on-board powering methods, indispensable in future medical and other applications; locomotion methods for robots on surfaces, in liquids, in air, and on fluid-air interfaces; and the challenges of microrobot localization and control, in particular multi-robot control methods for magnetic microrobots. Finally, the book addresses current and future applications, including noninvasive medical diagnosis and treatment, environmental remediation, and scientific tools.

Download or read book Untethered Small Scale Robots for Biomedical Applications written by Haojian Lu and published by Academic Press. This book was released on 2023-06-12 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Untethered Small-Scale Robots for Biomedical Applications introduces the principle, design, fabrication and application of small-scale robots for biomedical applications. Robots in the scale of nanometer, micrometer and millimeter are described in detail, along with their impact on the field of biomedical engineering. The selected examples of robots across different scales are of the most essential and innovative designs in a small-scale robot with various application settings for biomechanics characterization, drug delivery and surgical procedure. The representative robots represented operate robustly and safely in complex physiological environments where they have a transformative impact in bioengineering and healthcare. This book will lead the audience to the field of small-scale robots through the description of the physics in the small scale, design and fabrication of small-scale robots, and how these robots may impact the future of biomedical studies and minimally-invasive surgical procedures. Provides a comprehensive review of the current advances in biomedical untethered mobile milli/microrobots Describes the most representative small-scale robots in detail, including design, fabrication, control and function aspects Presents the imminent potential impacts of biomedical microrobots Discusses the existing challenges and emerging concepts associated with designing such a miniaturized robot for operation inside a biological environment for biomedical applications

Download or read book MULTI DEGREES OF FREEDOM WIRELESS ACTUATION OF SMALL MAGNETIC MECHANISMS written by Sajad Salmanipour and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic millimeter-scale robots are often actuated using externally generated magnetic fields. For most applications, these remote magnetic microrobots are located relatively far from the magnetic field generation sources. In this condition, all microrobots receive approximately the same driving magnetic field, which we term a homogeneous magnetic field. For many microrobotic tasks such as drug dispensing, biopsy tool activation or grasping, multiple system degrees of freedom (DOF) must be controlled. To achieve multi-DOF control in a homogeneous magnetic field, clever system design is required. While some progress has been made in this area allowing up to six independent DOFs to be individually commanded, there has been no rigorous effort in determining the maximum achievable number of DOFs for systems with homogeneous magnetic field input. In this work, we show that this maximum is eight and we introduce the theoretical basis for this conclusion, relying on the number of independent usable components in a magnetic field at a point. To verify the claim experimentally, we first develop an electromagnetic field generation system capable of generation all the eight independent magnetic components at a single point, followed by a simple 8-DOF demonstration mechanism, to show the feasibility of eight independently actuated motions. Next, we introduce a design process to utilize the maximum number of independently actuated DOFs on a microrobot system. We make use of four classes of microrobotic mechanisms which are commonly used in practice and allow for the creation of more complex microrobotic mechanisms with up to eight actuated DOFs. The systematic design framework is presented in the form of an optimization problem, where the designer specifies the number of magnets, and the type and quantity of mechanisms of the microdevice. The result gives the optimized position and orientation of on-board magnets and axes for mechanism motion. To verify the functionality of the design process, we utilize it to develop a 7-DOF wireless robot for drug delivery applications. Next, to investigate the feasibility of utilizing magnetic actuation methods in minimally invasive surgery procedures, a 3-DOF wireless gripper prototype and an 8-DOF two-grippers mechanism will be presented. The method and design process presented here for achieving up to eight actuated DOFs in homogeneous quasi-static magnetic fields can be applied to any microrobotic system where multiple motions and on-board mechanisms can lead to a more effective system.

Download or read book Interactive Collaborative Robotics written by Andrey Ronzhin and published by Springer. This book was released on 2019-08-12 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 4th International Conference on Interactive Collaborative Robotics, ICR 2019, held in Istanbul, Turkey, in August 2019. The 32 papers presented in this volume were carefully reviewed and selected from 46 submissions. They deal with challenges of human-robot interaction; robot control and behavior in social robotics and collaborative robotics; and applied robotic and cyber-physical systems.

Download or read book Micro Scale Mobile Robotics written by Eric Diller and published by Now Pub. This book was released on 2013-09 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a tutorial on the physical phenomena governing the operation and design of microrobots and a survey of existing approaches to microrobot design and control. It also provides an overview of actuation and control methods commonly used to remotely power these designs, as well as a discussion of possible future research directions.

Download or read book Design Implementation and Feedback Stabilization of a Permanent Magnet Levitation System written by Dhiraj Basnet and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic manipulators are a class of systems for noncontact control of magnetized objects at a distance. These systems have found a range of applications in minimally invasive medical procedures, microrobotics, magnetic tweezers, microfluidics, and lab-on-a-chip devices. The magnetic field used for manipulation is conventionally produced by arrays of electromagnets, which are simply controlled by their voltages. However, electromagnets suffer from the disadvantage of generating much weaker magnetic fields compared to the permanent magnets of similar size, weight, and cost. Therefore, research efforts are ongoing to replace electromagnets with permanent magnets in order to develop more compact and less expensive magnetic manipulators. In these manipulators, magnetic field is controlled by displacement of the permanent magnets using mechanical actuators. This thesis intends to replace electromagnets with permanent magnets in the magnetic levitation systems (MLS). An MLS is a one-dimensional (1D) magnetic manipulator that levitates magnetic objects against gravity by feedback control of magnetic force applied to them. Instead of controlling the magnetic force of electromagnets using their voltages, in this work, the magnetic force is controlled by a linear servomotor which adjusts the distance between a permanent magnet and the levitating object. Based on this concept, a permanent magnet MLS is designed, implemented, and stabilized by feedback control, levitating a ferromagnetic sphere of diameter 5 mm at an equilibrium point i.e. 3 mm above its initial position. The resulting MLS is tested in practice and its performance is verified by experiments. The MLS developed in this work features many properties of more complex 2D and 3D magnetic manipulators. Therefore, it provides a convenient means for early study of more complex magnetic manipulators. In particular, it can be used to empirically study the linear limitation of small bandwidth and nonlinear limitation of finite slew rate of the mechanical actuators on the overall performance, including the stability, of magnetic manipulators.

Download or read book Biologically Inspired Robotics written by Yunhui Liu and published by CRC Press. This book was released on 2011-12-21 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Robotic engineering inspired by biology—biomimetics—has many potential applications: robot snakes can be used for rescue operations in disasters, snake-like endoscopes can be used in medical diagnosis, and artificial muscles can replace damaged muscles to recover the motor functions of human limbs. Conversely, the application of robotics technology to our understanding of biological systems and behaviors—biorobotic modeling and analysis—provides unique research opportunities: robotic manipulation technology with optical tweezers can be used to study the cell mechanics of human red blood cells, a surface electromyography sensing system can help us identify the relation between muscle forces and hand movements, and mathematical models of brain circuitry may help us understand how the cerebellum achieves movement control. Biologically Inspired Robotics contains cutting-edge material—considerably expanded and with additional analysis—from the 2009 IEEE International Conference on Robotics and Biomimetics (ROBIO). These 16 chapters cover both biomimetics and biorobotic modeling/analysis, taking readers through an exploration of biologically inspired robot design and control, micro/nano bio-robotic systems, biological measurement and actuation, and applications of robotics technology to biological problems. Contributors examine a wide range of topics, including: A method for controlling the motion of a robotic snake The design of a bionic fitness cycle inspired by the jaguar The use of autonomous robotic fish to detect pollution A noninvasive brain-activity scanning method using a hybrid sensor A rehabilitation system for recovering motor function in human hands after injury Human-like robotic eye and head movements in human–machine interactions A state-of-the-art resource for graduate students and researchers in the fields of control engineering, robotics, and biomedical engineering, this text helps readers understand the technology and principles in this emerging field.

Download or read book Direct Field feedback Control for Permanent Magnet Spherical Motors written by Kun Bai and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Clinical Applications of Magnetic Nanoparticles written by Nguyen TK Thanh and published by CRC Press. This book was released on 2018-02-06 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering the latest information in magnetic nanoparticle (MNP) research, this book builds upon the success of the first volume and provides an updated and comprehensive review, from synthesis, characterization, and biofunctionalization to clinical applications of MNPs, including the diagnosis and treatment of cancers. The book captures some of emerging research area which was not available in the first volume. Good Manufacturing Practices and Commercialization of MNPs are also included. This volume, also written by some of the most qualified experts in the field, incorporates new developments in the literature, and continues to bridge the gaps between the different areas in this field.

Download or read book Magnetic Bearings written by Gerhard Schweitzer and published by Springer Science & Business Media. This book was released on 2009-06-10 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiling the expertise of nine pioneers of the field, Magnetic Bearings - Theory, Design, and Application to Rotating Machinery offers an encyclopedic study of this rapidly emerging field with a balanced blend of commercial and academic perspectives. Every element of the technology is examined in detail, beginning at the component level and proceeding through a thorough exposition of the design and performance of these systems. The book is organized in a logical fashion, starting with an overview of the technology and a survey of the range of applications. A background chapter then explains the central concepts of active magnetic bearings while avoiding a morass of technical details. From here, the reader continues to a meticulous, state-of-the-art exposition of the component technologies and the manner in which they are assembled to form the AMB/rotor system. These system models and performance objectives are then tied together through extensive discussions of control methods for both rigid and flexible rotors, including consideration of the problem of system dynamics identification. Supporting this, the issues of system reliability and fault management are discussed from several useful and complementary perspectives. At the end of the book, numerous special concepts and systems, including micro-scale bearings, self-bearing motors, and self-sensing bearings, are put forth as promising directions for new research and development. Newcomers to the field will find the material highly accessible while veteran practitioners will be impressed by the level of technical detail that emerges from a combination of sophisticated analysis and insights gleaned from many collective years of practical experience. An exhaustive, self-contained text on active magnetic bearing technology, this book should be a core reference for anyone seeking to understand or develop systems using magnetic bearings.

Download or read book Self reconfigurable Robots written by Kasper Stoy and published by . This book was released on 2010 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive survey of the growing field of self-reconfigurable robots that discusses the history of the field, design considerations, and control strategies. Self-reconfigurable robots are constructed of robotic modules that can be connected in many different ways. These modules move in relationship to each other, which allows the robot as a whole to change shape. This shapeshifting makes it possible for the robots to adapt and optimize their shapes for different tasks. Thus, a self-reconfigurable robot can first assume the shape of a rolling track to cover distance quickly, then the shape of a snake to explore a narrow space, and finally the shape of a hexapod to carry an artifact back to the starting point. The field of self-reconfigurable robots has seen significant progress over the last twenty years, and this book collects and synthesizes existing research previously only available in widely scattered individual papers, offering an accessible guide to the latest information on self-reconfigurable robots for researchers and students interested in the field. Self-Reconfigurable Robots focuses on conveying the intuition behind the design and control of self-reconfigurable robots rather than technical details. Suggestions for further reading refer readers to the underlying sources of technical information. The book includes descriptions of existing robots and a brief history of the field; discussion of module design considerations, including module geometry, connector design, and computing and communication infrastructure; an in-depth presentation of strategies for controlling self-reconfiguration and locomotion; and exploration of future research challenges.

Download or read book ROMANSY 21 Robot Design Dynamics and Control written by Vincenzo Parenti-Castelli and published by Springer. This book was released on 2016-06-29 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume contains papers that have been selected after review for oral presentation at ROMANSY 2016, the 21th CISM-IFToMM Symposium on Theory and Practice of Robots and Manipulators. These papers cover advances on several aspects of the wide field of Robotics as concerning Theory and Practice of Robots and Manipulators. ROMANSY 2016 is the 21st event in a series that started in 1973 as one of the first conference activities in the world on Robotics. The first event was held at CISM (International Centre for Mechanical Science) in Udine, Italy on 5-8 September 1973. It was also the first topic conference of IFToMM (International Federation for the Promotion of Mechanism and Machine Science) and it was directed not only to the IFToMM community.

Download or read book Electromagnetic Actuation and Sensing in Medical Robotics written by Hongliang Ren and published by Springer. This book was released on 2017-12-30 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights electromagnetic actuation (EMA) and sensing systems for a broad range of applications including targeted drug delivery, drug-release-rate control, catheterization, intravitreal needleless injections, wireless magnetic capsule endoscopy, and micromanipulations. It also reviews the state-of-the-art magnetic actuation and sensing technologies with remotely controlled targets used in biomedicine.

Download or read book Feedback Control and Stability Analysis of a Permanent Magnet Levitation System written by Mohammad Reza Shariatmadari and published by . This book was released on 2021 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in non-contact manipulation of magnetic objects by external magnetic fields have made significant impact on the development of new generations of minimally invasive medical procedures in which magnetized objects such as drug carriers, surgical tools, etc., are guided inside the patients' body by precise control of external magnetic fields. The magnetic fields can be generated and controlled by arrays of either electro- or permanent magnets. Such controllable array of electromagnets is called non-contact magnetic manipulator. Although the magnetic fields of electromagnets are easier to control, permanent magnets have a larger magnetic field to size ratio that promotes compactness and/or larger workspace of the manipulator. In a magnetic manipulator with permanent magnets, the generated magnetic field is controlled by changing the translational or rotational position of its magnets by use of mechanical actuators. To stabilize the position of a magnetized object inside magnetic fields, feedback control of these actuators is necessary by the very nature of magnetic fields. The ability of feedback to stabilize the object substantially depends on the bandwidth and rate-of-change (or slew rate) limitations of the utilized actuators, the size of object and the viscosity of the medium it movies in, and the strength of the permanent magnets used. The study of these effects is crucial for the proper design of non-contact manipulation using permanent magnets. This research investigates the impact of bandwidth and rate-of-change limitations on the stability properties of the feedback loop within a magnetic levitation framework. A magnetic levitation system relying on permanent magnets provides an appropriate example while the simple structure of this system provides deeper understanding of the nature of limitations imposed by mechanical actuators. For this system, two controller designs are developed and their stability properties are studied: first, a linear feedback law based on an approximate linearized model of the actual system, and second, a nonlinear feedback law using the concept of feedback linearization. In the latter case, the nonlinear nature of magnetic fields is involved in the control design procedure to improve the close-loop stability. Finally, the region of attraction associated with each controller is constructed for different values of system parameters. These parameters are experimentally extracted from a real-world mechanical actuator (servomotor) and permanent magnet using system identification techniques. The stability properties of developed controllers are examined in terms of the size of constructed region of attraction.

Download or read book Introduction to Mechanism Design written by Eric Constans and published by CRC Press. This book was released on 2018-07-20 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Mechanism Design: with Computer Applications provides an updated approach to undergraduate Mechanism Design and Kinematics courses/modules for engineering students. The use of web-based simulations, solid modeling, and software such as MATLAB and Excel is employed to link the design process with the latest software tools for the design and analysis of mechanisms and machines. While a mechanical engineer might brainstorm with a pencil and sketch pad, the final result is developed and communicated through CAD and computational visualizations. This modern approach to mechanical design processes has not been fully integrated in most books, as it is in this new text.