Showing papers in "International Journal of Electrical Engineering Education in 1986"
TL;DR: An Introduction to Microprocessors: THORN EMI HOME ELECTRONICS is a concise presentation of the functioning of a microprocessor and of the systems that can be constructed by interfacing.
Abstract: An Introduction to Microprocessors: THORN EMI HOME ELECTRONICS (Macmillan, 1985,86 pp., £5.95 paperback) This text is 'a concise presentation of the functioning of a microprocessor and of the systems that can be constructed by interfacing'. The book builds upon earlier books in the Macmillan series which deal with an introduction to digital techniques and related topics. It is supported by video tapes relating to microprocessor systems. The text deals with the MOSTEK 6502 microprocessor and covers basic ideas, programming and interfacing. The treatment is intended for the enthusiast rather than the undergraduate student. Attention is directed explicitly to the chosen microprocessor and its associated chips. The novice would have considerable difficulty with this text. Without background material provided by earlier texts in the series the material would be difficult to follow. For the enthusiast wishing to know how best to exploit the 6502 the text would be useful. M. G. HARTLEY, Department of Electrical Engineering and Electronics, U MIST
242 citations
TL;DR: This book falls mainly in the area of a graduate text although aspects are now present in some final year undergraduate courses and should maintain its usefulness for a long time to come.
Abstract: intending research worker, to follow up the contents of this book. A further benefit is the use of a sensible number, about half-a-dozen, of exercises at the end of each chapter with skeleton solutions supplied at the end of the book, which supplement the illustrative examples freely used in the text. Currently it falls mainly in the area of a graduate text although aspects, especially of the earlier chapters, are now present in some final year undergraduate courses. It should maintain its usefulness for a long time to come. R. J. RICHARDS, Information Engineering Division. University Engineering Department, Cambridge
7 citations
TL;DR: A computer-based teaching aid, for the popular BBC model B microcomputer, which may be used to design and display the characteristics of a low-pass finite impulse response (FIR) digital filter.
Abstract: Digital filtering techniques have become an important part of the curriculum of electronic engineering courses. This paper details a computer-based teaching aid, for the popular BBC model B microcomputer, which may be used to design and display the characteristics of a low-pass finite impulse response (FIR) digital filter.
4 citations
TL;DR: In this paper, a series of experiments are described explaining induction heating theory and relating it to the requirements of the industrial process of aluminium extrusion, where the authors have attempted to illustrate basic electromagnetic phenomena using readily available laboratory equipment and unsophisticated current density measuring probes.
Abstract: S-ENGLISH, FRENCH, GERMAN, SPANISH Illustrating electromagnetics using an industrial process The authors have attempted to illustrate basic electromagnetic phenomena using readily available laboratory equipment and unsophisticated current density measuring probes. A series of experiments are described explaining induction heating theory and relating it to the requirements of the industrial process of aluminium extrusion. Illustration de I'electromagnetisme par un processus industriel Les auteurs ont essaye d'illustrer les principes de base de l'electromagnetisme en utilisant de l'equipement de laboratoire facilement disponible et des sondes peu compliquees pour mesurer la den site de courant. Une serie d'experiences est decrite, qui expliquent la theorie du chauffage par induction et la relient aux exigences du processus industriel d'extrusion de I'aluminium.
3 citations
TL;DR: This is an introduction to logic simulation concepts for second or third year undergraduate students in electrical engineering.
Abstract: This is an introduction to logic simulation concepts for second or third year undergraduate students in electrical engineering. The motivation, modelling techniques, and algorithms are considered for logic simulation (the verification of the design itself) and fault simulation (the verification of the test for the design).
2 citations
TL;DR: A method is presented for solution of the generation unit commitment problem and the method's speed advantage over the branch and bound technique when an initial upper bound is not known is presented.
Abstract: A method is presented for solution of the generation unit commitment problem. The binary search is structured to allow incorporation of an existing dispatch algorithm. An example is presented illustrating the method's speed advantage over the branch and bound technique when an initial upper bound is not known.
2 citations
TL;DR: In this article, the M.Sc. course aims to teach these fundamentals illustrated by many examples of sensors and instruments used for widely different purposes, which will still be valid when today's instruments have been superseded.
Abstract: Electrical and electronic measuring instruments are used today in all branches of science and engineering. There is a considerable fund of knowledge which is fundamental to all measuring instruments and which will still be valid when today's instruments have been superseded. This one year M.Sc. course aims to teach these fundamentals illustrated by many examples of sensors and instruments used for widely different purposes.
2 citations
TL;DR: An undergraduate project to design, construct and demonstrate the performance of a digital filter utilising the TMS32010 is presented.
Abstract: S-ENGLISH, FRENCH, GERMAN, SPANISH The TMS32010 digital signal processor an educational viewpoint The architecture of the TMS32010 signal processing microcomputer is discussed and its advantages from an educational viewpoint are emphasised. An undergraduate project to design, construct and demonstrate the performance of a digital filter utilising the TMS32010 is presented. Le processeur de signaux TMS32010: un point de vue pedagogique L'architecture du microcalculateur TMS32010 de traitement de signaux est etudiee et ses avantages au point de vue pedagogique sont mis en evidence. Un projet pour etudiants non-gradues et ayant pour but de concevoir, construire et montrer les performances d'un filtre numerique en utilisant Ie TMS32010 est egalement presente, Der digitale Signalwandler TMS32010 ein piidagogischer Gesichtspunkt Die Architektur des signalverarbeitenden Mikrocomputers TMS32010 wird besprochen und seine Vorziige von einem padagogischen Standpunkt werden beton!. Ein Studentenprojekt, ein den TMS32010 benuzendes Digitalfilter zu entwerfen, konstruieren und sein Verhalten vorzufiihren, wird beschrieben. EI procesador de senales digitales TMS32010: un punto de vista educativo Se discute la arquitectura del microordenador de procesado de seiiales TMS32010 y se resaltan sus ventajas desde un punto vista educativo. Se presenta un proyecto de no titulado para disefiar, construir y demostrar el funcionamiento de un filtro digital utilizando el TMS32010.
2 citations
TL;DR: This paper describes how superpositional principles can be employed to formulate the response of an R, L circuit which is subjected to PWM voltage waveforms.
Abstract: This paper describes how superpositional principles can be employed to formulate the response of an R, L circuit which is subjected to PWM voltage waveforms. Explicit expressions are given for the ...
2 citations
TL;DR: A microprocessor-based phase controlled triac with rectifier bridge provides variable voltage to a d.c.C. machine control, and introduces students to the use of a microprocessor in d. c. motor control.
Abstract: A microprocessor-based phase controlled triac with rectifier bridge provides variable voltage to a d.c. motor. The ability of the controller to demonstrate different aspects of d.c. motor control such as soft start and speed control is illustrated. As an experiment, this introduces students to the use of a microprocessor in d.c. machine control.
2 citations
TL;DR: In this paper, an advanced laboratory exercise is outlined in which the industrial technique of induction tube welding is simulated on a laboratory scale and details are given of the different measurement techniques used.
Abstract: An advanced laboratory exercise is outlined in which the industrial technique of induction tube welding is simulated on a laboratory scale. Details are given of the different measurement techniques used. This experiment may be used to introduce basic electrical engineering topics into engineering disciplines of all types.
TL;DR: The Adventures in Binland as discussed by the authors was an early attempt to teach the elements of binary number systems in the context of computers, and is an excellent example of an authoritative work intended for the non-specialist reader.
Abstract: Principal of UMIST. The same era also saw books with intriguing titles, such as Giant Brainsmachines that think. This reviewer recalls one book with the title Adventures in Binland-an early attempt to teach the elements of binary number systems in the context of computers. The book by Richard Stevens which is the subject of this current review is an excellent example of an authoritative work intended for the non-specialist reader. While the work is written in non-technical language the author does not feel the need to present his material in too simplistic a manner. The contrast between the level of his approach and that of some of the earlier works on the subjectcan hardly be exaggerated. The general public has certainly come an immense distance in terms of its accommodation to computers over the thirty years time-span since digital computers were in their infancy. The author begins his book with an introduction relating to the growth of microelectronics since the invention of the transistor in 1947. Having established this preliminary basis the author provides an explanation of the working of current computers set against the background of their historical development. Here and elsewhere the text is enlivened with excellent photographs and diagrams. Subsequent chapters deal with the hardware of computers large and small. The text, though non-specialist, conveys a great deal of information, certainly sufficient to ensure that the reader has a very good grasp of fundamentals. Thus, for example, the text relating to the operations of the CPU is sufficiently comprehensive for it to be valuable material for a first-year undergraduate class. With the basic ideas established, the text then concentrates on microprocessors. The principal families are discussed and applications are considered. Attention is given to a survey of programming at assembly level. 4, 8,16 and 32-bit machines are compared and contrasted. The central portion of the text relates to a comparatively detailed treatment of the design and fabrication of integrated circuits generally. The treatment leads naturally into consideration of semi-conductor memory and thereafter the technology behind bulk-storage systems. The final part of the text relates to software and programming languages more generally. A variety of high-level languages is compared and contrasted. It is interesting to note that the languages considered extend beyond Fortran and Basic to include such languages as C and Ada. The book draws to a close with a consideration of computer systems and a review of large modem machines such as the Cray. The book concludes with a brief discussion of artificial intelligence and predictions as to further developments. A glossary of technical terms and a comprehensive reading list are provided. The author is to be congratulated on his text. While the material is of considerable interest to the enthusiastic lay-person it could well serve as an introductory text for students in the pure and applied sciences. It would form an excellent gift for the enthusiastic sixth-form student. M. G. HARTLEY, Digital Processes Group, Department ofElectrical Engineering and Electronics. UMIST
TL;DR: In this article, a self-excited single-phase synchronous generator is proposed, which carries a main winding and an auxiliary winding in space quadrature, connecting the latter to the field windin...
Abstract: A form of self-excited single-phase synchronous generator is proposed. The armature carries a main winding and an auxiliary winding in space quadrature. By connecting the latter to the field windin...
TL;DR: The design and manufacture of 3 kVA (nominal) rating three-phase and three single-phase transformer bank units, all with three-limb cores and 0.17 per unit leakage reactance are described.
Abstract: Large transformers, like highly rated rotating machines, can be modelled in ‘micro’ form to demonstrate significant second order, non-linear, features. The design and manufacture of 3 kVA (nominal) rating three-phase and three single-phase transformer bank units, all with three-limb cores and 0.17 per unit leakage reactance are described.
TL;DR: Weisman and Eckart as mentioned in this paper published PowerPlant Performance: A. B. Gill, 1985,506 pp., £41.15, and ModernPowerPlant Engineering: J. E. EL-WAKIL, 1984,861 pp, £34.95.
Abstract: PowerPlant Performance: A. B. GILL (Butterworths, 1984,683 pp., £54) ModernPowerPlant Engineering: J. WEISMAN and L. E. ECKART (Prentice Hall, 1985,506 pp., £41.15) Powerplant Technology: M. M. EL-WAKIL (McGraw-Hill, 1984,861 pp., £34.95) Three large volumes with prices to match, and very similar titles. In practice, however, although the titles may be similar, the contents of one of these books is rather different. PowerPlant Performance has been written by the Site Efficiency Engineer at the Central Electricity Generating Board (U.K.)'s Drakelow Power Stations. It cannot be considered as a text book in the normal sense of the word because it really does concentrate on power station performance. It does not attempt to describe the design or construction of the plant as such, for example, the section on coal starts with how to sample coal from a conveyor, but instead describes the methods used for measuring performance. There is, in fact, very little electrical content at all, the bulk of the book being devoted to subjects, such as steam cycles, turbine performance and gas and water flows. Regarded as a companion volume to the industry standard, ModernPowerStation Practice,it will, no doubt, be indispensable to the plant performance engineer but to electrical engineering students, be they under or postgraduate, it is of very limited appeal. The two remaining volumes have much in common. Both written by professors at universities in the U.S.A., they both aim to provide a single volume text book to cover all aspects of electrical power plant. They even describe the same material in roughly the same order. Starting with a review of thermodynamics, they consider fossil fuels, combustion, water and steam cycles, turbines and gas turbines. They then describe nuclear energy and commercial reactors. As with the book by Gill, neither describes the electrical plant itself in any great detail, although Weisman and Eckart do have a chapter devoted to it. At this stage, despite both books being of very different lengths, they have considered the same material in approximately the same number of pages. Where EI-Wakil then differs is in devoting a considerable number of chapters to renewable energy sources, energy-storage and the environmental aspects of power generation. With the renewed interest in energy matters generally, there is no doubt that these volumes both fulfil a need. On sheer volume of content, not to mention price, EI-Wakil illto be preferred. However, neither volume is complete in its own right and, obviously, some concepts are treated better in one than the other. The electrical engineer, in particular, will find the descriptions of alternators, motors, and control systems rather inadequate but will, nevertheless, find the technologies described of great value. D. LIDGATE, DepartmentofElectricalEngineering and Electronics, UMIST
TL;DR: In this article, the authors describe a cycloconverter built by an undergraduate project to complement the major research activity at Loughborough University to produce a range of solid state power supplies for high frequency induction heating applications.
Abstract: Research is being carried out at Loughborough University to produce a range of solid state power supplies for high frequency induction heating applications. The research is based mainly on current and voltage fed inverters. This paper describes a cycloconverter built by an undergraduate project to complement the major research activity.
TL;DR: The first two volumes of the Journal of Physics E: Scientific Instruments as mentioned in this paper were published between 1981 and 1984 and dealt with mathematical modelling, parameter estimation methods, dynamics, systematic design, feedback, reliability, ergonomics, and the fundamentals of noise and measurement.
Abstract: Journal of Physics E: Scientific Instruments, mainly between 1981 and 1984.This, in itself, should be sufficient to convey to any prospective reader the vast range of topics that the series attempts to cover. Unfortunately, the Preface to Volume 3 does not give a comprehensive description of the content of the first two volumes, but a library search shows that.Volume 1 dealt with: mathematical modelling, parameter estimation methods, dynamics, systematic design, feedback, reliability, ergonomics, and the fundamentals of noise and measurement. Volume 2 dealt with: measurement errors, various analogue and digital transducers, signal conditioning, lock-in amplifiers, correlation and cross-correlation in instruments, nucleonic instrumentation, and pattern recognition. The most recent volume, Volume 3, comprises 15 chapters covering a very wide range from units and standards of measurements and the avoidance of electrical interference in instruments (Chapters 1 & 2), which can be found in so many textbooks, to techniques for measuring the partial pressures of gases in the blood 'in vitro' and 'in vivo' (Chapters 9 & 1O)! Quite clearly, this book goes from the very general to the ultra specific. It might prove useful to lecturers as an aid in preparing their lectures on a specific topic and to others whose specific interests are not widely covered in alternative literature, such as ultrasonics (Chapters 11 & 12),and nondestructive testing and non-invasive measurements (Chapters 13 & 14).Also covered are transducer immittance measurement, sensors for mechanical properties, displacement transducers, force and weight measurements, pipeline fiowmeters, and temperature measurements (Chapters 3 to 8). Finally, Chapter 15 deals with some techniques for instruments in hostile environments. As is often the case with a book of this type, it can be very useful for its extensive References and Bibliographies which are to be found at the ends of each chapter. There are numerous diagrams and some photographs and an adequate index. It even gives the present addresses of the authors. All in all, the book will help to support the literature already available in its wide subject area and it would probably form a useful reference source in the Measurement and Instrumentation section of a scientific and technological library. BRIAN M. SHAW, Division ofElectrical and Electronic Engineering, The Hatfield Polytechnic
TL;DR: This book falls mainly in the area of a graduate text although aspects are now present in some final year undergraduate courses and should maintain its usefulness for a long time to come.
Abstract: intending research worker, to follow up the contents of this book. A further benefit is the use of a sensible number, about half-a-dozen, of exercises at the end of each chapter with skeleton solutions supplied at the end of the book, which supplement the illustrative examples freely used in the text. Currently it falls mainly in the area of a graduate text although aspects, especially of the earlier chapters, are now present in some final year undergraduate courses. It should maintain its usefulness for a long time to come. R. J. RICHARDS, Information Engineering Division. University Engineering Department, Cambridge
TL;DR: Analytical results on packet error probability for noncoherent frequency-shift-keying (NCFSK) and differential phase- Shift Keying (DPSK) systems with diversity reception operating over slow Rayleigh fading channels with Gaussian noise are derived.
Abstract: Analytical results on packet error probability for noncoherent frequency-shift-keying (NCFSK) and differential phase-shift-keying (DPSK) systems with diversity reception operating over slow Rayleigh fading channels with Gaussian noise are derived. Expressions obtained are applicable to two linear combining schemes: selection combining and maximal-ratio combining.
TL;DR: A method for design optimization of switched-mode dc-dc power converters using bipolar transistors is formulated using the concept of multicriterion optimization, finding the optimum switching frequency on the basis of design tradeoffs amongst converter's efficiency, size, weight and cost.
Abstract: A method for design optimization of switched-mode dc-dc power converters using bipolar transistors is formulated. Using the concept of multicriterion optimization, the optimum switching frequency is found on the basis of design tradeoffs amongst converter's efficiency, size, weight and cost.
TL;DR: In this paper, a simple statistical model for the estimation errors is derived which shows the good noise discrimination properties of Discrete Transforms, and the accuracy of the model is confirmed by computer simulation.
Abstract: S-ENGLISH, FRENCH, GERMAN, SPANISH A simple error analysis for the estimation of harmonic signals in the presence of noise Signals containing a dominant harmonic componenl may be analysed by digital instruments employing discrete Fourier Transform methods. When the signal is contaminated by noise a 'region of error' is introduced into the estimate of the signal. A simple statistical model for the estimation errors is derived which shows the good noise discrimination properties of Discrete Transforms. The accuracy of the model is confirmed by computer simulation. Une analyse simple d'erreurs dans I'estimation de signaux harmoniques en presence de bruit Les signaux contenant une composante harmonique dominante peuvent etre analyses par des appareils numeriques utilisant les methodes de transformation de Fourier discrete. Quand Ie signal est pollue par du bruit une 'region d'erreur' est introduite dans l'estimation du signal. Un modele statistique simple pour les erreurs d'estimation est developpe et montre les bonnes proprietes de discrimination de bruit de la transforrnee discrete. La precision du modele est confirmee par une simulation sur ordinateur.
TL;DR: A new technique for designing series phase lead compensation using the Smith chart is presented, which avoids the trial and error procedures of design methods based on the root-locus plot or the Bode diagram.
Abstract: This paper presents a new technique for designing series phase lead compensation using the Smith chart. The method avoids the trial and error procedures of design methods based on the root-locus plot or the Bode diagram.
TL;DR: A new component method is developed to solve unbalance problems in power systems by substituting θ = 45° in Park's Transformation and interconnection of sequence components network to simulate various shunt and series faults.
Abstract: A new component method is developed to solve unbalance problems in power systems by substituting θ = 45° in Park's Transformation. Interconnection of sequence components network to simulate various shunt and series faults are obtained. The interconnected networks are similar to those obtained by symmetrical component transformation without any phase shifters.
TL;DR: This book has a chatty style, but makes some serious assumptions about the reader's knowledge, and there are some useful case studies of applications of voice technology.
Abstract: Voice Technology: E. R. TElA and G. W. GONNELLA (Prentice Hall, 1983,212 pp., £19.75) This book has a chatty style, but makes some serious assumptions about the reader's knowledge. For example, it mentions a 'Wiener least-squares filter' with no explanation. It is not just that it requires a good technical background; the level of the book is very uneven. A very detailed, basic explanation of sampling is given, yet aliasing is not explained at all. There are also some technical deficiencies in the text, for example confusing quantizing error with accuracy in the discussion of AjD conversion. However, despite these problems the section of the book covering voice recognition gives a reasonable introduction to the subject, and there are some useful case studies of applications of voice technology. R. A. COTTRELL, Department ofElectrical Engineering and Electronics. V MIST
TL;DR: In this paper, the basic mathematical framework is presented in the context of examples which include synchronous detection in the presence of phase perturbations, which is not difficult nor tedious despite the non-linear relationship between measured quantities and the phase noise.
Abstract: Randomly phase-modulated cosines are a source of examples for illustrating the topics of variance, autocorrelation, conditional probability and filtering. Mathematical manipulations are neither difficult nor tedious despite the non-linear relationship between measured quantities and the phase noise. The basic mathematical framework is presented in the context of examples which include synchronous detection in the presence of phase perturbations.
TL;DR: In this paper, the authors present an experiment on the design, fabrication and test of microstrip circuits using p.c.b. techniques, intended to complement final year of undergraduate or M.Sc. level electromagnetics courses.
Abstract: The background to and methods for an experiment on the design, fabrication and test of microstrip circuits are presented. The experiment is intended to complement final year of undergraduate or M.Sc. level electromagnetics sections of Electrical and Electronic Engineering courses. The circuits are fabricated using p.c.b. techniques thus keeping costs to a minimum.
TL;DR: A CAD package running on the Apple IIe microcomputer is presented to plot the time response of a linear system to a number of forms of excitation.
Abstract: A CAD package running on the Apple IIe microcomputer is presented to plot the time response of a linear system to a number of forms of excitation. System specification is in either pole-zero or S-plane polynomial, both up to the 9th order. Output is in graphical or tabular form. The programs are user-friendly, and may be used by students with a minimum of formal introduction.
TL;DR: In this paper, the refractive index profile of a graded index fiber is measured using the near-field scanning method, and an undergraduate experiment is presented, of approximately six hours duration.
Abstract: An undergraduate experiment, of approximately six hours duration, is presented, in which the refractive index profile of a graded index fibre is measured using the near-field scanning method. The n...