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Measurement and Monitoring by This book presents the main methods and techniques for measuring and monitoring the accuracy of geometrical parameters of precision Computer Numerically Controlled (CNC) and automated machines, including modern coordinate measuring machines (CMMs). Highlights include: • Standard methods and means of testing, together with methods newly developed and tested by the authors; • Various parameters, such as straightness, perpendicularity, flatness, pitch, yaw, and roll, as well as the principal processes for measurement of these parameters; • Lists and tables of geometrical accuracy parameters, together with diagrams of arrangements for their control and evaluation of measurement results; • Special methods and some original new devices for measurement and monitoring, information measuring systems (consisting of laser interferometers, photoelectric raster encoders or scales, etc.), and methods for the measurement and testing of circular scales, length scales, and encoders; • Methods for measuring small lengths, gaps, and distances between two surfaces; • Examples showing the suitability of mechatronic methods for high accuracy correction of machines; and • Particular attention is given to the analysis of ISO written standards of accuracy control, terms and definitions, and methods for evaluation of the measurement results during performance verification.
Publication Date: 2014-05-15
Electromagnetic Nondestructive Evaluation (XVIII) by Electromagnetic Nondestructive Evaluation (ENDE) is an invaluable tool for assessing the condition of a test object without permanently altering or harming it in any way. It has become an indispensable technique for troubleshooting and research in diverse fields, such as engineering, medicine and art. This book presents one plenary lecture and 41 selected papers from the 19th International Workshop on Electromagnetic Nondestructive Evaluation, held in Xi'an, China, in June 2014. The workshop focused on research into the theory and application of ENDE methods, and provided a forum for the exchange of ideas and discussion of recent developments. The papers are arranged in five sections: material characterization; analytical and numerical modeling; inverse problems and signal processing; new developments and innovative industrial applications; and advanced sensors in ENDE.
Publication Date: 2015-06-10
Mechatronics by Mastering the art of ‘mechatronics' currently looks like one of the most attractive tasks of modern engineering technology and science. Many applications resort to the interdisciplinary approach of mechatronics to enhance the performance, quality and safety of either product or process. Some are very traditional (like hard disk drives, biomedical, automotive and aerospace systems) while others are fairly new (like micro and nano electromechanical systems, unmanned air vehicles, intelligent machining, manufacturing systems or bioinspired devices). This book describe some practical examples, which demonstrate how different competences, disciplines and technologies meet in an innovative mechatronic system. They deal with several domains like the hard disk drive technology, biomedical prostheses, fluidic automation, UAV Vision System, vibration monitoring and suppression in steelmaking plants, materials machining and smart composites. These examples will show the reader, who is still looking for the real meaning of mechatronics, how some innovative technologies allow implementing a sort of artificial intelligence in several systems currently produced. Examples describe neural network positioning control, chaos prevention, myoelectric stimulation of prosthesis, human detection by vision system, multi-physics modeling and control of dynamics. Some topics are related to small scale, as in the case of a finger of a biotronic hand. Nevertheless, the same approach is applied even to huge machines, like the electric arc furnace. It is worth noticing that the authors resorted even to the additive manufacturing, as in prototyping bio-prostheses, or to fiber optics embedded into composite structures. Those technologies allow reducing cost, weight or volume of product. In some cases, the mechatronic approach improves the quality and the accuracy of some material processing, like in rolling or in turning against the risk of self–excited chatter vibration. The examples described in this book cover a wide range of mechatronic applications.
Publication Date: 2015-01-01