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Design Prototyping And Testing Of Biaxial Mems Accelerometers For Rigid Body Pose And Twist Estimation
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Book Synopsis Design, Prototyping and Testing of Biaxial MEMS Accelerometers for Rigid-body Pose-and-twist Estimation by : Xiaowei Shan
Download or read book Design, Prototyping and Testing of Biaxial MEMS Accelerometers for Rigid-body Pose-and-twist Estimation written by Xiaowei Shan and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The reported research work aims to develop a novel class of accelerometers applicable to the high-accuracy estimation of rigid-body pose and twist. These accelerometers, based on a monolithic biaxial architecture, dubbed Orchid, were designed for fabrication as MEMS (microelectromechanical system) with isotropic stiffness in the sensitive plane and high frequency ratios between the insensitive and sensitive directions. The architecture is intended to accommodate any regular polygonal shape with a suspension that allows for an in-plane translation of the proof-mass with respect to the frame. Structural optimization is conducted to yield high frequency ratios and a high degree of compliance in the suspension, for low-g applications and planar excitation. Lamé curves are introduced in the fillets to relieve the stress concentration. The elastically isotropic structure in the sensitive plane is analyzed symbolically and validated numerically and experimentally. The microfabrication process was then devised and conducted with high precision for triangular and square Orchid structures. Techniques and recipes were studied to solve the wafer bonding problem with large cavities, adhesive influence on structural etching and reflectivity adjustment of the sample surface. Vibration tests were conducted in the MEMS prototypes to validate the isotropic sensitivity of the biaxial architecture. In light of the isotropic Orchid architecture, a novel biaxial MEMS accelerometer, W30P4, was designed, fabricated and tested for low-g applications. The accelerometer monolithic structure was optimally designed based on a fully symmetric architecture with a high frequency ratio between the insensitive and sensitive axes. To facilitate the utilization of the proposed architecture, an analysis environment is developed for the modal and static analyses of user-defined structural parameters. The sensing substructure was designed with a configurable comb-structure for simultaneous biaxial capacitive sensing. This accelerometer was fabricated with high precision and tested under 1-g acceleration, both statically and dynamically. Test results validate the isotropy of the Orchid architecture and the high signal-to-noise ratio of the W30P4 biaxial accelerometer. Finally, an accelerometer strapdown was designed and configured using the W30P4 accelerometers, based on an octahedron frame inscribing the tetrahedron strapdown. An embedded microsystem was devised and coded inside the accelerometer strapdown to convert and transmit the signals wirelessly to a host computer. Moreover, the mathematical and simulation models were established to estimate rigid-body pose and twist using this accelerometer strapdown. Test results on a haptic manipulator validate the effectiveness of its position estimation and provide insight into the hardware improvement." --
Book Synopsis Design of Biaxial Accelerometers for Rigid-body Pose-and-twist Estimation by : Ting Zou
Download or read book Design of Biaxial Accelerometers for Rigid-body Pose-and-twist Estimation written by Ting Zou and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Pose and twist estimation is a ubiquitous problem in science and engineering: from astro- and aeronautics to biomechanics; from navigation systems to the latest video games. Current technology relies mainly upon accelerometer strapdowns, which call for precise estimation algorithms. Along these lines, the main objective of this dissertation is the development of innovative accelerometer strapdowns suitable for estimating rigid-body pose and twist accurately and reliably. The design philosophy is based on two interdependent concepts: an original concept of biaxial accelerometers, introduced in a previous dissertation and termed Simplicial Biaxial Accelerometers (SBA), and isotropic accelerometer strapdowns. The goal of the former is to sense accelerations along arbitrary directions in a plane. An improved SBA design is proposed and realized by means of MEMS (MicroelectromechanicalSystem) fabrication technology. By means of finite element analysis (FEA), the accelerometer sensitivity was found to be highly acceptable. The analysis results show that the SBA is isotropically sensitive to accelerations along arbitrary directions in the plane, while the cross-axis sensitivity is reduced, as desired. Isotropy mainly concerns a novel accelerometer strapdown made of the proposed SBAs. By virtue of its inherent geometricisotropy, the tetrahedral SBA strapdown is selected, but other isotropic polyhedra, such as the other four Platonic solids and Buckyballs, can be equally used. Performance and accuracy of the strapdown in estimating the pose and the twist of a rigid-body moving in space are illustrated with representative simulation examples. Moreover, the isotropic nature of the strapdown enables the decoupling of the point tangential acceleration from its centripetal counterpart in the acceleration field. Consequently, "coupling"--a major hurdle in pose and twist estimation--is avoided, thereby streamlining the estimation process." --
Book Synopsis Design of Multiaxial Accelerometers with Simplicial Architectures for Rigid-body Pose-and-twist Estimation by : Philippe Cardou
Download or read book Design of Multiaxial Accelerometers with Simplicial Architectures for Rigid-body Pose-and-twist Estimation written by Philippe Cardou and published by . This book was released on 2007 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Furthermore, the theory behind the estimation of the angular velocity from acceleration measurements is revisited. Hence, four algorithms are proposed, which allow for the estimation of the rigid-body angular velocity from centripetal acceleration measurements alone. Based on Kalman filtering, another method is proposed in order to obtain a rigid-body angular-velocity estimate from both the centripetal and tangential components of the rigid-body acceleration field." --
Book Synopsis Handbook of Modern Sensors by : Jacob Fraden
Download or read book Handbook of Modern Sensors written by Jacob Fraden and published by Springer Science & Business Media. This book was released on 2006-04-29 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seven years have passed since the publication of the previous edition of this book. During that time, sensor technologies have made a remarkable leap forward. The sensitivity of the sensors became higher, the dimensions became smaller, the sel- tivity became better, and the prices became lower. What have not changed are the fundamental principles of the sensor design. They are still governed by the laws of Nature. Arguably one of the greatest geniuses who ever lived, Leonardo Da Vinci, had his own peculiar way of praying. He was saying, “Oh Lord, thanks for Thou do not violate your own laws. ” It is comforting indeed that the laws of Nature do not change as time goes by; it is just our appreciation of them that is being re?ned. Thus, this new edition examines the same good old laws of Nature that are employed in the designs of various sensors. This has not changed much since the previous edition. Yet, the sections that describe the practical designs are revised substantially. Recent ideas and developments have been added, and less important and nonessential designs were dropped. Probably the most dramatic recent progress in the sensor technologies relates to wide use of MEMS and MEOMS (micro-electro-mechanical systems and micro-electro-opto-mechanical systems). These are examined in this new edition with greater detail. This book is about devices commonly called sensors. The invention of a - croprocessor has brought highly sophisticated instruments into our everyday lives.
Book Synopsis Biaxial Fatigue of Metals by : Jaap Schijve
Download or read book Biaxial Fatigue of Metals written by Jaap Schijve and published by Springer. This book was released on 2015-08-25 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Problems of fatigue under multiaxial fatigue loads have been addressed in a very large number of research publications. The present publication is primarily a survey of biaxial fatigue under constant amplitude loading on metal specimens. It starts with the physical understanding of the fatigue phenomenon under biaxial fatigue loads. Various types of proportional and non-proportional biaxial fatigue loads and biaxial stress distributions in a material are specified. Attention is paid to the fatigue limit, crack nucleation, initial micro crack growth and subsequent macro-crack in different modes of crack growth. The interference between the upper and lower surfaces of a fatigue crack is discussed. Possibilities for predictions of biaxial fatigue properties are analysed with reference to the similarity concept. The significance of the present understanding for structural design problems is considered. The book is completed with a summary of major observations.
Book Synopsis New Trends in Mechanism Science by : Doina Pisla
Download or read book New Trends in Mechanism Science written by Doina Pisla and published by Springer Science & Business Media. This book was released on 2010-08-12 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: After two succesful conferences held in Innsbruck (Prof. Manfred Husty) in 2006 and Cassino in 2008 (Prof Marco Ceccarelli) with the participation of the most important well-known scientists from the European Mechanism Science Community, a further conference was held in Cluj Napoca, Romania, in 2010 (Prof. Doina Pisla) to discuss new developments in the field. This book presents the most recent research advances in Mechanism Science with different applications. Amongst the topics treated are papers on Theoretical kinematics, Computational kinematics, Mechanism design, Mechanical transmissions, Linkages and manipulators, Mechanisms for biomechanics, Micro-mechanisms, Experimental mechanics, Mechanics of robots, Dynamics of multi-body systems, Dynamics of machinery, Control issues of mechanical systems, Novel designs, History of mechanism science etc.
Book Synopsis Innovative Product Design and Intelligent Manufacturing Systems by : BBVL. Deepak
Download or read book Innovative Product Design and Intelligent Manufacturing Systems written by BBVL. Deepak and published by Springer Nature. This book was released on 2020-03-13 with total page 1049 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers selected research articles from the International Conference on Innovative Product Design and Intelligent Manufacturing System (ICIPDIMS 2019), held at the National Institute of Technology, Rourkela, India. The book discusses latest methods and advanced tools from different areas of design and manufacturing technology. The main topics covered include design methodologies, industry 4.0, smart manufacturing, and advances in robotics among others. The contents of this book are useful for academics as well as professionals working in industrial design, mechatronics, robotics, and automation.
Book Synopsis IoT Sensor-Based Activity Recognition by : Md Atiqur Rahman Ahad
Download or read book IoT Sensor-Based Activity Recognition written by Md Atiqur Rahman Ahad and published by Springer Nature. This book was released on 2020-07-30 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offer clear descriptions of the basic structure for the recognition and classification of human activities using different types of sensor module and smart devices in e.g. healthcare, education, monitoring the elderly, daily human behavior, and fitness monitoring. In addition, the complexities, challenges, and design issues involved in data collection, processing, and other fundamental stages along with datasets, methods, etc., are discussed in detail. The book offers a valuable resource for readers in the fields of pattern recognition, human–computer interaction, and the Internet of Things.
Book Synopsis Smart Materials and New Technologies by : D. Michelle Addington
Download or read book Smart Materials and New Technologies written by D. Michelle Addington and published by Routledge. This book was released on 2005 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, architects are looking for new solutions to old problems, including 'smart' and 'intelligent' materials that can be applied to building design. This text covers the use of smart materials in a design perspective, as well as describing how these solutions could be utilised in other applications.
Book Synopsis Flying Insects and Robots by : Dario Floreano
Download or read book Flying Insects and Robots written by Dario Floreano and published by Springer Science & Business Media. This book was released on 2009-10-23 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flying insects are intelligent micromachines capable of exquisite maneuvers in unpredictable environments. Understanding these systems advances our knowledge of flight control, sensor suites, and unsteady aerodynamics, which is of crucial interest to engineers developing intelligent flying robots or micro air vehicles (MAVs). The insights we gain when synthesizing bioinspired systems can in turn benefit the fields of neurophysiology, ethology and zoology by providing real-life tests of the proposed models. This book was written by biologists and engineers leading the research in this crossdisciplinary field. It examines all aspects of the mechanics, technology and intelligence of insects and insectoids. After introductory-level overviews of flight control in insects, dedicated chapters focus on the development of autonomous flying systems using biological principles to sense their surroundings and autonomously navigate. A significant part of the book is dedicated to the mechanics and control of flapping wings both in insects and artificial systems. Finally hybrid locomotion, energy harvesting and manufacturing of small flying robots are covered. A particular feature of the book is the depth on realization topics such as control engineering, electronics, mechanics, optics, robotics and manufacturing. This book will be of interest to academic and industrial researchers engaged with theory and engineering in the domains of aerial robotics, artificial intelligence, and entomology.
Book Synopsis Nanopositioning Technologies by : Changhai Ru
Download or read book Nanopositioning Technologies written by Changhai Ru and published by Springer. This book was released on 2015-12-22 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the state-of-the-art technologies for positioning with nanometer resolutions and accuracies, particularly those based on piezoelectric actuators and MEMS actuators. The latest advances are described, including the design of nanopositioning devices, sensing and actuation technologies and control methods for nanopositioning. This is an ideal book for mechanical and electrical engineering students and researchers; micro and nanotechnology researchers and graduate students; as well as those working in the precision instrumentation or semiconductor industries.
Book Synopsis Modern Sensors Handbook by : Pavel Ripka
Download or read book Modern Sensors Handbook written by Pavel Ripka and published by John Wiley & Sons. This book was released on 2013-03-01 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern sensors working on new principles and/or using new materials and technologies are more precise, faster, smaller, use less power and are cheaper. Given these advantages, it is vitally important for system developers, system integrators and decision makers to be familiar with the principles and properties of the new sensor types in order to make a qualified decision about which sensor type to use in which system and what behavior may be expected. This type of information is very difficult to acquire from existing sources, a situation this book aims to address by providing detailed coverage on this topic. In keeping with its practical theme, the discussion concentrates on sensor types used or having potential to be used in industrial applications.
Book Synopsis Structure-Property Relations in Nonferrous Metals by : Alan Russell
Download or read book Structure-Property Relations in Nonferrous Metals written by Alan Russell and published by John Wiley & Sons. This book was released on 2005-07-08 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This junior/senior textbook presents fundamental concepts ofstructure property relations and a description of how theseconcpets apply to every metallic element except iron. Part One of the book describes general concepts of crystalstructure, microstructure and related factors on the mechanical,thermal, magnetic and electronic properties of nonferrous metals,intermetallic compounds and metal matrix composites. Part Two discusses all the nonferrous metallic elements from twoperspectives: First it explains how the concepts presented in PartOne define the properties of a particular metallic element and itsalloys. Second is a description of the major engineering uses ofeach metal. This section features sidebar pieces describingparticular physical property oddities, engineering applications andcase studies. An Instructor's Manual presenting detailed solutionsto all the problems in the book is available from the Wileyeditorial department. An Instructor's Manual presenting detailed solutions to all theproblems in the book is available from the Wiley editorialdepartment.
Book Synopsis Theory of Notch Stresses by : Heinz Neuber
Download or read book Theory of Notch Stresses written by Heinz Neuber and published by . This book was released on 1946 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Stability of Structures by : Wei-Chau Xie
Download or read book Dynamic Stability of Structures written by Wei-Chau Xie and published by Cambridge University Press. This book was released on 2006-06-05 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the theory of parametric stability of structures under deterministic and stochastic loadings.
Book Synopsis Towards Synthesis of Micro-/Nano-systems by : Fumihiko Kimura
Download or read book Towards Synthesis of Micro-/Nano-systems written by Fumihiko Kimura and published by Springer. This book was released on 2007 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of papers, presented at the 11th International Conference on Precision Engineering, offers a broader global perspective on the challenges and opportunities ahead. The discussion encompasses leading-edge technologies and forecasts future trends. Coverage includes advanced manufacturing systems; ultra-precision- and micro-machining; nanotechnology for fabrication and measurement; rapid prototyping and production technology; new materials and advanced processes; computer-aided production engineering; manufacturing process control; production planning and scheduling, and much more.
Book Synopsis Fundamentals of Microfabrication and Nanotechnology, Three-Volume Set by : Marc J. Madou
Download or read book Fundamentals of Microfabrication and Nanotechnology, Three-Volume Set written by Marc J. Madou and published by CRC Press. This book was released on 2018-12-14 with total page 1992 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its third edition, Fundamentals of Microfabrication and Nanotechnology continues to provide the most complete MEMS coverage available. Thoroughly revised and updated the new edition of this perennial bestseller has been expanded to three volumes, reflecting the substantial growth of this field. It includes a wealth of theoretical and practical information on nanotechnology and NEMS and offers background and comprehensive information on materials, processes, and manufacturing options. The first volume offers a rigorous theoretical treatment of micro- and nanosciences, and includes sections on solid-state physics, quantum mechanics, crystallography, and fluidics. The second volume presents a very large set of manufacturing techniques for micro- and nanofabrication and covers different forms of lithography, material removal processes, and additive technologies. The third volume focuses on manufacturing techniques and applications of Bio-MEMS and Bio-NEMS. Illustrated in color throughout, this seminal work is a cogent instructional text, providing classroom and self-learners with worked-out examples and end-of-chapter problems. The author characterizes and defines major research areas and illustrates them with examples pulled from the most recent literature and from his own work.
