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Author: Prashanth Ramu Publisher: ISBN: Category : Languages : en Pages : 220
Book Description
Any combination of contact and non contact sensors on a single coordinate measuring machine makes it a multi-sensor or hybrid coordinate measuring machine. The ability to change the probing device without re-establishing the part coordinate system is a significant advantage and consequently the reason for their wide acceptance and usage. In addition to the existing three linear stages in a conventional or hybrid coordinate measuring machine, they are augmented with two rotary stages in order to make them more versatile. Augmenting a conventional or hybrid measuring machine with rotary stages not only complicates the metrology loop but also adds a few more parametric errors to an existing list of known twenty one parametric error terms for a three stage conventional measuring machine. Also different probing sensors in the system have different metrology loops. A literature survey reveals that there are no previous or current work on parametric machine modeling, error evaluation, correction for the same and uncertainty analysis for machines of this class with a wide potential for measuring complex parts quickly and with great ease. The current work focuses on developing a parametric model for a five-axis, multi-sensor coordinate measuring machine of a specific configuration. Measurement techniques for estimating the parametric errors, techniques for compensating the same and methods to estimate measurement uncertainty on five-axis, multi-sensor coordinate measuring machines are proposed. A comparison between the results from error budgeting by the method of constraints for such high precision measuring machines with those from conventional methods based on estimates of subsystem errors are also presented.
Author: Prashanth Ramu Publisher: ISBN: Category : Languages : en Pages : 220
Book Description
Any combination of contact and non contact sensors on a single coordinate measuring machine makes it a multi-sensor or hybrid coordinate measuring machine. The ability to change the probing device without re-establishing the part coordinate system is a significant advantage and consequently the reason for their wide acceptance and usage. In addition to the existing three linear stages in a conventional or hybrid coordinate measuring machine, they are augmented with two rotary stages in order to make them more versatile. Augmenting a conventional or hybrid measuring machine with rotary stages not only complicates the metrology loop but also adds a few more parametric errors to an existing list of known twenty one parametric error terms for a three stage conventional measuring machine. Also different probing sensors in the system have different metrology loops. A literature survey reveals that there are no previous or current work on parametric machine modeling, error evaluation, correction for the same and uncertainty analysis for machines of this class with a wide potential for measuring complex parts quickly and with great ease. The current work focuses on developing a parametric model for a five-axis, multi-sensor coordinate measuring machine of a specific configuration. Measurement techniques for estimating the parametric errors, techniques for compensating the same and methods to estimate measurement uncertainty on five-axis, multi-sensor coordinate measuring machines are proposed. A comparison between the results from error budgeting by the method of constraints for such high precision measuring machines with those from conventional methods based on estimates of subsystem errors are also presented.
Author: Harish Kumar Publisher: Springer Nature ISBN: 9811510717 Category : Science Languages : en Pages : 637
Book Description
This book presents the selected peer-reviewed papers from the National Conference on Advances in Mechanical Engineering (NCAME 2019), held at the National Institute of Technology Delhi, India. The book covers different areas of mechanical engineering from design engineering to manufacturing engineering. A wide range of topics are discussed such as CAD/CAM, additive manufacturing, fluid dynamics, materials science and engineering, simulation and modeling, finite element analysis, applied mechanics to name a few. The contents provide an overview of the state-of-the-art in mechanical engineering research in the country. Given the scope of the topics covered, the book will be of interest for students, researchers and professionals working in mechanical engineering.
Author: Kalyana Phanidhar Bhamidi Publisher: ISBN: Category : Languages : en Pages : 164
Book Description
Hybrid (or Multi sensor) Coordinate Measuring Machines (CMMs) belong to a new generation of CMMs, gaining popularity in the current world market due to the flexibility of changing the sensing device without having to re-establish the part coordinate system. The distinction we make between hybrid and conventional CMMs, which permit multiple measurement methods, is that the different sensors in a hybrid system have different metrology loops. Despite the many advantages these CMMs have, there are no standards documented for the performance of such multi-sensor CMMs. The assessment of the errors or uncertainty present in the use of each probing system may be done in a manner similar to that described in the existing B89.4.1 standard (multi-tip), but the quantification of these errors has not been studied. The primary focus of this thesis is a better understanding of the performance of these machines when measuring the same artifact with different sensors and development of artifacts and procedures to document the uncertainty associated with these measurements. Performance tests such as the multi-tip test, drift test, repeatability, grid test, squareness, and scale error tests have been conducted on several multi sensor CMMs to quantify the errors associated in the machine. There is an urgent need for documenting a standard for hybrid CMMs, both to better understand them and to support the users of these kinds of machines. This thesis documents an important step in this direction.
Author: Jerzy A. Sładek Publisher: Springer ISBN: 366248465X Category : Technology & Engineering Languages : en Pages : 472
Book Description
This book focuses on effective methods for assessing the accuracy of both coordinate measuring systems and coordinate measurements. It mainly reports on original research work conducted by Sladek’s team at Cracow University of Technology’s Laboratory of Coordinate Metrology. The book describes the implementation of different methods, including artificial neural networks, the Matrix Method, the Monte Carlo method and the virtual CMM (Coordinate Measuring Machine), and demonstrates how these methods can be effectively used in practice to gauge the accuracy of coordinate measurements. Moreover, the book includes an introduction to the theory of measurement uncertainty and to key techniques for assessing measurement accuracy. All methods and tools are presented in detail, using suitable mathematical formulations and illustrated with numerous examples. The book fills an important gap in the literature, providing readers with an advanced text on a topic that has been rapidly developing in recent years. The book is intended for master and PhD students, as well as for metrology engineers working at industrial and research laboratories. It not only provides them with a solid background for using existing coordinate metrology methods; it is also meant to inspire them to develop the state-of-the-art technologies that will play an important role in supporting quality growth and innovation in advanced manufacturing.
Author: Kuang-Chao Fan Publisher: MDPI ISBN: 3039217127 Category : Science Languages : en Pages : 596
Book Description
This collection represents successful invited submissions from the papers presented at the 8th Annual Conference of Energy Economics and Management held in Beijing, China, 22–24 September 2017. With over 500 participants, the conference was co-hosted by the Management Science Department of National Natural Science Foundation of China, the Chinese Society of Energy Economics and Management, and Renmin University of China on the subject area of “Energy Transition of China: Opportunities and Challenges”. The major strategies to transform the energy system of China to a sustainable model include energy/economic structure adjustment, resource conservation, and technology innovation. Accordingly, the conference and its associated publications encourage research to address the major issues faced in supporting the energy transition of China. Papers published in this collection cover the broad spectrum of energy economics issues, including building energy efficiency, industrial energy demand, public policies to promote new energy technologies, power system control technology, emission reduction policies in energy-intensive industries, emission measurements of cities, energy price movement, and the impact of new energy vehicle.
Author: Kuang-Chao Fan Publisher: MDPI ISBN: 3038422762 Category : Science Languages : en Pages : 1
Book Description
This book is a printed edition of the Special Issue "Design and Applications of Coordinate Measuring Machines" that was published in Applied Sciences
Author: Robert J. Hocken Publisher: CRC Press ISBN: 1420017535 Category : Technology & Engineering Languages : en Pages : 586
Book Description
Since John Bosch edited and published the first version of this book in 1995, the world of manufacturing and coordinate measuring machines (CMMs) and coordinate measuring systems (CMSs) has changed considerably. However, the basic physics of the machines has not changed in essence but have become more deeply understood. Completely revised and updat
Author: Hamid Aghajan Publisher: Academic Press ISBN: 0080878008 Category : Technology & Engineering Languages : en Pages : 623
Book Description
- The first book, by the leading experts, on this rapidly developing field with applications to security, smart homes, multimedia, and environmental monitoring - Comprehensive coverage of fundamentals, algorithms, design methodologies, system implementation issues, architectures, and applications - Presents in detail the latest developments in multi-camera calibration, active and heterogeneous camera networks, multi-camera object and event detection, tracking, coding, smart camera architecture and middleware This book is the definitive reference in multi-camera networks. It gives clear guidance on the conceptual and implementation issues involved in the design and operation of multi-camera networks, as well as presenting the state-of-the-art in hardware, algorithms and system development. The book is broad in scope, covering smart camera architectures, embedded processing, sensor fusion and middleware, calibration and topology, network-based detection and tracking, and applications in distributed and collaborative methods in camera networks. This book will be an ideal reference for university researchers, R&D engineers, computer engineers, and graduate students working in signal and video processing, computer vision, and sensor networks. Hamid Aghajan is a Professor of Electrical Engineering (consulting) at Stanford University. His research is on multi-camera networks for smart environments with application to smart homes, assisted living and well being, meeting rooms, and avatar-based communication and social interactions. He is Editor-in-Chief of Journal of Ambient Intelligence and Smart Environments, and was general chair of ACM/IEEE ICDSC 2008. Andrea Cavallaro is Reader (Associate Professor) at Queen Mary, University of London (QMUL). His research is on target tracking and audiovisual content analysis for advanced surveillance and multi-sensor systems. He serves as Associate Editor of the IEEE Signal Processing Magazine and the IEEE Trans. on Multimedia, and has been general chair of IEEE AVSS 2007, ACM/IEEE ICDSC 2009 and BMVC 2009. - The first book, by the leading experts, on this rapidly developing field with applications to security, smart homes, multimedia, and environmental monitoring - Comprehensive coverage of fundamentals, algorithms, design methodologies, system implementation issues, architectures, and applications - Presents in detail the latest developments in multi-camera calibration, active and heterogeneous camera networks, multi-camera object and event detection, tracking, coding, smart camera architecture and middleware
Author: Prashanth Ramu
Author: Prashanth Ramu
Author: Harish Kumar
Author: Kalyana Phanidhar Bhamidi
Author: Jerzy A. Sładek
Author: Kuang-Chao Fan
Author: 
Author: American Society of Mechanical Engineers
Author: Kuang-Chao Fan
Author: Robert J. Hocken
Author: Hamid Aghajan