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A spherical actuator is a novel electric device that can achieve 2/3-DOF rotational motions in a single joint with electric power input. It has advantages such as compact structure, low mass/moment of inertia, fast response and non-singularities within the workspace. It has promising applications in robotics, automobile, manufacturing, medicine and aerospace industry. This is the first monograph that introduces the research on spherical actuators systematically.  It broadens the scope of actuators from conventional single-axis to multi-axis, which will help both beginners and researchers to enhance their knowledge on electromagnetic actuators. Generic analytic modeling methods for magnetic field and torque output are developed, which can be applied to the development of other electromagnetic actuators. A parametric design methodology that allows fast analysis and design of spherical actuators for various applications is proposed. A novel non-contact high-precision 3-DOF spherical motion sensing methodology is developed and evaluated with experiments, which shows that it can achieve one order of magnitude higher precision than conventional methods. The technologies of nondimensionalization and normalization are introduced into magnetic field analysis the first time, and a benchmark database is established for the reference of other researches on spherical actuators. Indexed in the Book Citation Index– Science (BKCI-S).

Actuators -- Design and construction. --- Actuators. --- Electromagnetic -- Design and construction. --- Actuators --- Magneto-electric machines --- Degree of freedom --- Mechanical Engineering --- Engineering & Applied Sciences --- Mechanical Engineering - General --- Design and construction --- Magneto-electric machines. --- Degree of freedom. --- Design and construction. --- Degree of variance --- Freedom, Degree of --- Variance, Degree of --- Electromagnetic machines --- Engineering. --- Mechanical engineering. --- Control engineering. --- Robotics. --- Mechatronics. --- Electrical engineering. --- Control, Robotics, Mechatronics. --- Electrical Engineering. --- Mechanical Engineering. --- Analysis of variance --- Mechanics --- Phase rule and equilibrium --- Statistics --- Electric apparatus and appliances --- Electric generators --- Electromagnetism --- Electromagnets --- Automatic control --- Computer engineering. --- Engineering, Mechanical --- Engineering --- Machinery --- Steam engineering --- Computers --- Electric engineering --- Mechanical engineering --- Microelectronics --- Microelectromechanical systems --- Automation --- Machine theory --- Control engineering --- Control equipment --- Control theory --- Engineering instruments --- Programmable controllers

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This book introduces an innovative and high-efficiency technology for mechanical energy harvesting. The book covers the history and development of triboelectric nanogenerators, basic structures, working principles, performance characterization, and potential applications. It is divided into three parts: Part A illustrates the fundamental working modes of triboelectric nanogenerators with their prototype structures and theoretical analysis; Part B and Part C introduce two categories of applications, namely self-powered systems and self-powered active sensors. The book will be an ideal guide to scientists and engineers beginning to study triboelectric nanogenerators or wishing to deepen their knowledge of the field. Readers will be able to place the technical details about this technology in context, and acquire the necessary skills to reproduce the experimental setups for fabrication and measurement.

Energy. --- Renewable energy resources. --- Energy harvesting. --- Power electronics. --- Renewable energy sources. --- Alternate energy sources. --- Green energy industries. --- Nanotechnology. --- Tribology. --- Corrosion and anti-corrosives. --- Coatings. --- Energy Harvesting. --- Renewable and Green Energy. --- Power Electronics, Electrical Machines and Networks. --- Tribology, Corrosion and Coatings. --- Magneto-electric machines. --- Nanoelectromechanical systems. --- Nano-electro-mechanical systems --- Nanoelectromechanical devices --- Nanomechanical devices --- Nanomechanical machines --- Nanomechanical systems --- Nanometer scale devices --- Nanoscale devices --- Nanoscale electronic devices --- Nanostructured devices --- NEMS (Nanotechnology) --- Electromagnetic machines --- Friction --- Surfaces (Technology) --- Nanoelectronics --- Nanostructures --- Electric apparatus and appliances --- Electric generators --- Electromagnetism --- Electromagnets --- Production of electric energy or. --- Chemistry, inorganic. --- Alternate energy sources --- Alternative energy sources --- Energy sources, Renewable --- Sustainable energy sources --- Power resources --- Renewable natural resources --- Agriculture and energy --- Molecular technology --- Nanoscale technology --- High technology --- Inorganic chemistry --- Chemistry --- Inorganic compounds --- Energy scavenging --- Harvesting, Energy --- Power harvesting --- Force and energy --- Surface coatings --- Materials --- Coating processes --- Thin films --- Anti-corrosive paint --- Atmospheric corrosion --- Metal corrosion --- Metals --- Rust --- Rustless coatings --- Chemical inhibitors --- Chemistry, Technical --- Fouling --- Weathering --- Paint --- Protective coatings --- Waterproofing --- Electronics, Power --- Electric power --- Electronics --- Corrosion --- Deterioration --- Surfaces