Design of Special Planar Linkages


Book Description

Planar linkages play a very important role in mechanical engineering. As the simplest closed chain mechanisms, planar four-bar linkages are widely used in mechanical engineering, civil engineering and aerospace engineering. Design of Special Planar Linkages proposes a uniform design theory for planar four-bar linkages. The merit of the method proposed in this book is that it allows engineers to directly obtain accurate results when there are such solutions for the specified n precise positions; otherwise, the best approximate solutions will be found. This book discusses the kinematics and reachable workspace and singularity of a planar 3-RRR linkage, which can be used to analyze other planar linkages. Then a foldable stair that retains the walking conversions of human beings and all the merits of a concrete stair in civil engineering is described along with a lifting guidance mechanism that has the advantages of high strength, high rigidity, lightweight overconstraint trusses and motion flexibility. The method proposed in this book can be applied to other planar linkages. This book offers a valuable resource for scientists, researchers, engineers, graduate students in mechanical engineering especially those interested in engineering design, robotics and automation. Jingshan Zhao, Associate professor; Zhijing Feng and Fulei Chu, professor; Ning Ma, Dr., all work at the Department of Mechanical Engineering, Tsinghua University.







Mechanism Design


Book Description

Hardbound. Mechanism Design is written for mechanical engineers working in industry or, after some practical experience, following a post-graduate course of study. It is unique among modern books on mechanisms in its choice and treatment of topics and in its emphasis on design techniques that can be used within the time and cost constraints that actually occur in industry.This Second Edition contains much new material and reflects the far-reaching developments that have taken place in machine design and new computational methods since the book's first publication in 1982.













Proceedings of the First International Symposium on Impact and Friction of Solids, Structures and Intelligent Machines


Book Description

This book deals with the dynamics of mechanical systems in presence of impact and friction. The contributors are an international group of engineers and scientists from industrial and academic institutions of more than 23 countries around the world concerned with the modeling, analysis, measurement and control of nonsmooth mechanical structures. Contact laws lead to mathematical models that are highly nonlinear and nonsmooth or discontinuous. Discontinuous and nonsmooth processes introduce problems with data processing techniques and analytical methods. Thanks to great advances in computer technology and computational analysis, as well as the introduction of new experimental devices such as the atomic-force microscope and the quartz-crystal-microbalance probe, the study of impact and friction ? one of the oldest problems in physics, is now in a phase of rapid and exciting development. The growing number of research breakthroughs have promoted the development of new technologies in the description and design of systems with impact and friction models to understand nature, structures, machines, transportation systems, and other processes. A fairly comprehensive picture of these new developments is presented in this book by researchers who are giving up-to-date accounts of the present state of the field in many aspects.The book is essential for introducing readers in mechanical engineering, material science, applied mathematics, aerospace engineering, ocean engineering, biomechanics, and civil engineering to recent developments in nonsmooth mechanics. It is also useful for self-study purposes by professionals and practitioners in the field.




Design of Autoreaction


Book Description

This book provides the readers with a timely guide to the application and integration of interdisciplinary principles from the fields of kinetic design, mechanics, energy and materials engineering in the fields of architecture and engineering design. It explores the potential integration of autoreactive solutions, unpowered kinetic systems triggered by changes in the surrounding latent energy conditions, within man-made artefacts with added functionality and efficiency. Related interdisciplinary parameters are explored discussing morphology, mechanics, energy and materials in detail. Each chapter examines the implications of autoreactivity in one specific field, providing a general overview and listing relevant motion design parameters and identifying for the reader those aspects that have a high potential to open up for new design directions. The book guides readers through a highly multidisciplinary field of design, offering an extraordinary resource of knowledge for professional architects, engineers and designers, as well as for university teachers, researchers and students. Interdisciplinary research is presented throughout the book as a powerful resource that can serve architecture and design, and a learning method to rethink innovative, optimal and sustainable solutions.




Robot Intelligence Technology and Applications 2


Book Description

We are facing a new technological challenge on how to store and retrieve knowledge and manipulate intelligence for autonomous services by intelligent systems which should be capable of carrying out real world tasks autonomously. To address this issue, robot researchers have been developing intelligence technology (InT) for “robots that think” which is in the focus of this book. The book covers all aspects of intelligence from perception at sensor level and reasoning at cognitive level to behavior planning at execution level for each low level segment of the machine. It also presents the technologies for cognitive reasoning, social interaction with humans, behavior generation, ability to cooperate with other robots, ambience awareness and an artificial genome that can be passed on to other robots. These technologies are to materialize cognitive intelligence, social intelligence, behavioral intelligence, collective intelligence, ambient intelligence and genetic intelligence. The book aims at serving researchers and practitioners with a timely dissemination of the recent progress on robot intelligence technology and its applications, based on a collection of papers presented at the at the 2nd International Conference on Robot Intelligence Technology and Applications (RiTA), held in Denver, USA, December 18-20, 2013.