Showing posts with label technology. Show all posts
Showing posts with label technology. Show all posts
Linear Feedback Control Analysis and Design with Matlab By Dingy¨u Xue, YangQuan Chen, Derek P. Atherton
It is well known that the benefits from control engineering are numerous including the improved product/life quality, minimized waste materials, reduced pollution, increased safety and reduced energy consumption etc. One can observe that the notion of feedback and control plays an important role in most socio-technological aspects. A slogan, “Control Will Be the Physics of the 21st Century”, appeared in a plenary session of the 40th IEEE International Conference on Decision and Control (Dec. 2001, Orlando, FL., USA), suggests that at least all engineering students should take a first course on systems control.
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Low Power Design with High Level Power Estimation and Power Aware Synthesis By Sumit Ahuja and Avinash Lakshminarayana and Sandeep K. Shukla
Designing low-power computing hardware has always been a priority since the early 1990s. The famous graph drawn by Intel’s Shekhar Borkar is now imprinted in the minds of designers. It was realized that as the clock speed is scaled from mega hertz to giga hertz, the heat density on the surface of silicon chip would compare with that of rocket nozzles to the surface of the sun. Computing in today’s era has become pervasive in the form of handheld devices, smart phones, tablet computers, and most importantly bio implantable devices. Borker’s graph aptiy captures the need for reducing heat dissipation subsequently battery life conservation. The battery life of devices that are implanted inside one’s body must be sufficient to not require surgical substitution every few years. The wireless sensor network technology deployed for reconnaissance purposes by the military or for disaster management scenarios also brought in the requirement of long battery life despite the energy expensive communication functionalities.
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Circuit Analysis II with MATLAB® Applications By Steven T arris
This text is written for use in a second course in circuit analysis. The reader of this book should have the traditional undergraduate knowledge of an introductory circuit analysis material such as Circuit Analysis I with MATLAB® Applications by this author. Another prerequisite would be knowledge of differential equations, and in most cases, engineering students at this level have taken all required mathematics courses. It encompasses a spectrum of subjects ranging from the most abstract to the most practical, and the material can be covered in one semester or two quarters. Appendix B serves as a review of differential equations with emphasis on engineering related topics and it is recommended for readers who may need a review of this subject.
There are several textbooks on the subject that have been used for years. The material of this book is not new, and this author claims no originality of its content. This book was written to fit the needs of the average student. Moreover, it is not restricted to computer oriented circuit analysis. While it is true that there is a great demand for electrical and computer engineers, especially in the internet field, the demand also exists for power engineers to work in electric utility companies, and facility engineers to work in the industrial areas.
Chapter 1 is an introduction to second order circuits and it is essentially a sequel to first order circuits that were discussed in the last chapter of as Circuit Analysis I with MATLAB® Applications. Chapter 2 is devoted to resonance, and Chapter 3 presents practical methods of expressing signals in terms of the elementary functions, i.e., unit step, unit ramp, and unit impulse functions. Thus, any signal can be represented in the compex frequency domain using the Laplace transformation.
Chapters 4 and 5 are introductions to the unilateral Laplace transform and Inverse Laplace transform respectively, while Chapter 6 presents several examples of analyzing electric circuits using Laplace transformation methods. Chapter 7 begins with the frequency response concept and Bode magnitude and frequency plots. Chapter 8 is devoted to transformers with an introduction to self and mutual inductances. Chapter 9 is an introduction to one- and two-terminal devices and presents several practical examples. Chapter 10 is an introduction to three-phase circuits.
It is not necessary that the reader has previous knowledge of MATLAB®. The material of this text can be learned without MATLAB. However, this author highly recommends that the reader studies this material in conjunction with the inexpensive MATLAB Student Version package that is available at most college and university bookstores. Appendix A of this text provides a practical introduction to MATLAB. As shown on the front cover of this text the magnitude and phase plots can be easily obtained with a one line MATLAB code. Moreover, MATLAB will be invaluable in later studies such as the design of analog and digital filters. As stated above, Appendix B is a review of differential equations. Appendix C is an introduction to matrices, Appendix D provides instructions on constructing semilog templates to be used with Bode plots, and Appendix E discusses scaling methods.
In addition to numerous real-world examples, this text contains several exercises at the end of each chapter. Detailed solutions of all exercises are provided at the end of each chapter. The rationale is to encourage the reader to solve all exercises and check his effort for correct solutions and appropriate steps in obtaining the correct solution. And since this text was written to serve as a self-study or supplementary textbook, it provides the reader with a resource to test his knowledge.
The author has accumulated many additional problems for homework assignment and these are available to those instructors who adopt this text either as primary or supplementary text, and prefer to assign problems without the solutions. He also has accumulated many sample exams.
The author is indebted to the class of the Spring semester of 2001 at San Jose State University, San Jose, California, for providing several of the examples and exercises of this text.
Like any other new book, this text may contain some grammar and typographical errors. Accordingly, all feedback for errors, advice, and comments will be most welcomed and greatly appreciated.
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Switch Mode Power Supply Simulation By Steven M Sandler
Two of the things that have not changed are the desire for better
models and faster simulations. I performed the original simulations on
my “hyperfast” 133-MHz computer! At the time, I thought if I could just
get a faster computer, all of our SPICE problems would be history, right?
Today I am simulating on a computer that has a 2.6-GHz processor with
512 MB of RAM, and I would still say that simulations run too slow.
The computer technology has evolved, but so have the models. In 1996
we were performing simulations on 100-kHz power converters, whereas
today I routinely see 1- and 2-MHz power converters.
Another thing that has not changed is that I still routinely receive
comments such as “We don’t have time to simulate” or “Simulation
results don’t provide accurate answers.”
There have also been many changes since the earlier version of this
book. Design cycle times have been reduced, while performance requirements
have generally become more difficult. The monolithic devices of
today incorporate much more technology with many more functions and
features than the devices of 1996. It is for these reasons that I would
argue that we must use SPICE or some other simulation tool to the
fullest extent possible.
Another change since the predecessor volume was published is that
many component manufacturers have jumped on the SPICE bandwagon.
Many semiconductor manufacturers publish SPICE models of
their devices, as do capacitor manufacturers and inductor manufacturers.
Many integrated circuit manufacturers publish SPICE models and
some even offer Internet-based simulation tools with preset templates
for their devices. Device models have generally improved in accuracy,
but beware: There are still plenty of poor models being published.
In order to keep this book as useful as possible, several changes were
made to the earlier version. I updated some of the example circuits to reflect the higher level of technology and added actual measurement
results for many of the example circuits. This shows the correlation
that is possible and hopefully proves once and for all that SPICE will
provide very accurate results if you start with an accurate model.
The linear regulator chapter has been expanded. As simple and “low
tech” as these devices appear to be, I still see many design issues involving
these devices. Hopefully, this additional information will improve
the understanding of how these devices operate and the issues that
surround them.
A chapter has been added on active power factor correction (PFC),
because it has become a much more widely used technology.
I hope that you will find the updates useful and wish you happy
simulating.
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Computational Mathematics Models,Methods and Analysis with Matlab And Mpi By Robert E White
This book evolved from the need to migrate computational science into undergraduate education. It is intended for students who have had basic physics, programming, matrices and multivariable calculu.
The choice of topics in the book has been influenced by the Undergraduate Computational Engineering and Science Project (a United States Department of Energy funded e ort), which was a series of meetings during the 1990s. These meetings focused on the nature and content for computational science undergraduate education. They were attended by a diverse group of science and engineering teachers and professionals, and the continuation of some of these activities can be found at the Krell Institute, http://www.krellinst.org. Variations of Chapters 1-4 and 6 have been taught at North Carolina State University in fall semesters since 1992. The other four chapters were developed in 2002 and taught in the 2002-03 academic year.
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Fundamentals of Power Electronics with Matlab By Randall Shaffer
The CD-ROM that accompanies the book may be used on a single Computer only.The license does not permit the use on a network (of ana kind).You further agree that this license grants permission to use the products contained herein,but does not give you right of ownership to any of the content or product contained on this CD-ROM.Use of third Party software contained on this CD-ROM is limited to and subject to licensing terms for the respective products.
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Design with Climate Bioclimatic Approach to Architectural Regionalism By Olgyay Victor
The problem of controlling his environment and creating condition favorable to his aims and activities is as old as man himself.Through the ages man have sought,in the building of shelter.to fulfill two basic human needs protection from the elements and provision of an atmosphere favorable to spiritual endeavor.House design has reflected.Throughout its history,the different solutions advanced by each period to the continuing problem of securing a small controlled environment within a large scale natural setting too often beset ny adverse forces of cold,heat,wind,water,and sum
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Radar Systems Analysis And Design Using Matlab By Bassem R Mahafza
Numerous books have been written on Radar Systems and Radar Applications. A limited set of these books provides companion software. There is need for a comprehensive reference book that can provide the reader with hands-on-like experience. The ideal radar book, in my opinion, should serve as a conclusive, detailed, and useful reference for working engineers as well as a textbook for students learning radar systems analysis and design. This book must assume few prerequisites and must stand on its own as a complete presentation of the subject. Examples and exercise problems must be included. User friendly software that demonstrates the theory needs to be included. This software should be reconfigurable to allow different users to vary the inputs in order to better analyze their relevant and unique requirements, and enhance understanding of the subject.
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Simulation of Dynamic Systems
As the authors point out in the preface, there is not yet extant a universally accepted definition of the term simulation. Another approach to defining the field would be ‘‘the art of reproducing the behavior of a system for analysis without actually operating that system.’’ The authors have written a seminal text covering the simulation design and analysis of a broad variety of systems using two of the most modern software packages available today. The material is presented in a particularly adept fashion enabling students new to the field to gain a thorough understanding of the basics of continuous simulation in a single semester and providing, at the same time, a more advanced treatment of the subject for researchers and simulation professionals. The authors’ extensive treatment of continuous and discrete linear system fundamentals opens the door to simulation for individuals without formal education in a traditional engineering curriculum.
However defined, simulation is becoming an increasingly important component of curricula in engineering, business administration, the sciences, applied mathematics, and the like. This text will be a valuable resource for study in courses using simulation as a tool for understanding processes that are not amenable to study in other ways.
Robot Surgery
Robotic surgery is yet in the early stages even though robotic assisted surgery is increasing continuously. Thus, exact and careful understanding of robotic surgery is necessary because chaos and confusion exist in the early phase of anything. Especially, the confusion may be increased because the robotic equipment, which is used in surgery, is different from the robotic equipment which is used in the automobile factory. The robots in the automobile factory just follow a program. However, the robot in surgery has to follow the surgeon’s hand motions. I am convinced that this In-Tech Robotic Surgery book will play an essential role in giving some solutions to the chaos and confusion of robotic surgery.
The In-Tech Surgery book contains 11 chapters and consists of two main sections. The first section explains general concepts and technological aspects of robotic surgery. The second section explains the details of surgery using a robot for each organ system. I hope that all surgeons who are interested in robotic surgery will find the proper knowledge in this book. Moreover, I hope the book will perform as a basic role to create future prospectives. Unfortunately, this book could not cover all areas of robotic assisted surgery such as robotic assisted gastrectomy and pancreaticoduodenectomy. I expect that future editions will cover many more areas of robotic assisted surgery and it can be facilitated by dedicated readers. Finally, I appreciate all the authors who sacrificed their time and effort to write the book. I must thank my wife NaYoung for her support and also acknowledge MiSun Park’s efforts in helping complete the book.
Fundamentals of Robotic Mechanical Systems
The Mechanical Engineering Series features graduate texts and research monographs to address the need for information in contemporary mechanical engineering, including areas of concentration of applied mechanics, biomechanics, computational mechanics, dynamical systems and control, energetics, mechanics of materials, processing, production systems, thermal science, and tribology.
International Workshop on Robot and Handbooks
This work presents a model-based face recognition approach that uses a hierarchical Gabor wavelet representation andflexible neural network matching. The representation of local features is based on the Gabor wavelets transform of a number of scales and a number of orientations. The Gabor wavelet representation is used in a innovative self-organization flexible neural network matching approach that can provide robust recognition. The sparse centers of Gabor wavelets in the images and neurons placement are arranged according to the hexagonal grids. Neural network matching between the model and the input image is to find out the exact correspondence of local features and to map the model to the input image based on local similarity and neighborhood grouping of local features. Experimental results in recognizing faces that includes the variations of translation, rotation in plane, rotation in depth, and slightly changes of facial expressions are also presented.
Intelligent Robots And Systems
In September 1994 the seventh International Conference on Intelligent Robots and Systems- IROS '94-- was held in Neubiberg, a suburb of Munich, Germany, on the premises of the German Armed Forces University Munich. Of the 300 papers presented during the conference I have selected 48 ones which, in my subjective opinion, are particularly significant and characteristic for the present state of the technology of intelligent robots and systems. This book contains the selected papers in a revised and expanded form.
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