structured system analysis and design pdf notes

... three-phase system are only half those of the three separate single-phase systems, and the line-voltage drop between the source and load in the three-phase system is half that of each single-phase system. ... maintaining system standards and reliability. NERC coordinates its e¤orts with FERC and other organizations such as the Edison Electric Institute (EEI) [10]. As shown in Figure 1.3, the transmission system ... functions for both the distributed energy system and the local electric power system that allow paral- leling and disconnection from the electric power system. These power electronic interfaces...

Ngày tải lên: 30/03/2014, 07:20

... and Design? System development can generally be thought of having two major components: systems analysis and systems design. In System Analysis more emphasis is given to understanding the details ... done. 2.2.3. Design of System After the system has been analyzed by the analyst, the design stage of system life cycle begins. In design phase, the structure or design for the proposed system is ... between analysis and design? Can one begin to design without analysis? Why 2.11. Summary of System Development Life Cycle Models Key points covered in this lesson are >>The system& apos;s...

Ngày tải lên: 27/10/2013, 23:15

... businesses plateau or decline. Case Study: System Telecom 25 5.2.1 Before Analysis and Design 108 5.2.2 Analysis and Design 110 5.2.3 After Analysis and design 112 5.3 Project Planning 113 5.3.1 ... Context for Analysis and Design 1.1 Introduction Who is this book written for? The whole book is about systems analysis and design, and it’s been written for people who are analysts or designers ... 129 Exercises 129 6 Systems Analysis: Concepts 131 6.1 Introduction 131 6.2 What Is Systems Analysis? 131 6.3 Development Life Cycles 134 6.4 A Structured Approach 140 6.4.1 Structured Systems Analysis...

Ngày tải lên: 22/03/2014, 18:20

Ngày tải lên: 24/04/2014, 16:00

... 1 SCHOOL OF INFORMATION AND COMMUNICATION TECHNOLOGY HANOI UNIVERSITY OF SCIENCE AND TECHNOLOGY ______ * ______ SYSTEM ANALYSIS AND DESIGN REPORT Author : ... Conceptual data modeling ………………………………………… 17 B. Design I. High-level Design 1. Scenario Analysis …………… 18 2. Object Analysis ……………………………………………… 22 3. Screen Design 3.1 Log on ……………………………………………… 24 ... B. Design I. High – level Design 1. Scenario analysis. 1.1. User log on 27  Citizen User Menu Screen Screen Layout System name S City Library System...

Ngày tải lên: 01/06/2014, 17:25

Ngày tải lên: 01/06/2014, 23:13

... Inc. obtainingatimeresponse,andROOTLforobtainingroot-locusdataand plots.TheseCADpackagesbecamethebasisforthepracticalcontrol systemdesignCADpackagecalledTOTAL,theforerunnerofTOTAL-PC [8],whichwasdevelopedin1978atAFIT.TOTALbecamethecatalyst, alongwithothercontrolCADpackagesdevelopedbyotherindividuals, forthedevelopmentofthecurrenthighlydevelopedcommercialcontrol systemdesignCADpackagesthatarenowreadilyavailable.Oneofthese CADpackagesisMATLAB,whichhasbecomeavaluabletoolforacontrol engineerandisillustratedinthistext.ThedetailedcontentsoftheTOTAL- PCCADpackagearedescribedinAppendixD.Theprogramiscontainedin thediskwhichisincludedwiththisbook. Becomingproficient(computerliterate)intheuseoftheseCAD packages(tools)isessentialforacontrolsystemsengineer.Itisalsoessential todevelopproceduresforcheckingtheCADresultsateachstageofthe analysisanddesign.ThisisnecessaryinordertoverifythattheseCADtools havegeneratedresultswhichareconsistentwiththeory.Wheneverindoubt, concerningtheoperationofaspecificCADtool,applytheCADtooltoa simpleproblemwhoseknownanalyticalsolutioncanbereadilycomparedto thecomputergeneratedoutput. 1.9OUTLINEOFTEXT Thetextisessentiallydividedintothreeparts.Thefirstpart,consistingof Chapters2through4,providesthemathematicalfoundationformodeling physicalsystemsandobtainingtimesolutionsusingclassicalorLaplace transformmethods.ThesecondpartconsistsofChapters5through9that providethefundamentalsofconventionalcontroltheoryandstate-variable concepts.Theremainingportionofthetextrepresentsmaterialthatisusually coveredinthefirstorsecondundergraduatecourseincontroltheoryand controlsystemdesign. Thefirstfewchaptersdealwiththemathematicsandphysicalsystem modelingthatunderlietheanalysisofcontrolsystems.Oncethetechniqueof writingthesystemequations (and, inturn,theirLaplacetransforms)that describetheperformanceofadynamicsystemhasbeenmastered,theideas ofblockandsimulationdiagramsandtransferfunctionsaredeveloped. Whenphysicalsystemsaredescribedintermsofblockdiagramsandtransfer functions,theyexhibitbasicservocharacteristics.Thesecharacteristicsare describedanddiscussed.Theconceptofstateisintroduced,andthesystem equationsaredevelopedinthestandardmatrixformat.Thenecessarylinear algebrarequiredtomanipulatethematrixequationsisincluded.Apresenta- tionofthevariousmethodsofanalysisisnextpresentedthatcanbeusedinthe studyoffeedbackcontrolsystems.SISOsystemsareusedinitiallytofacilitate 26Chapter1 Copyright ... designer’s control -system design proficiency, since it minimizes and expedites the tedious andrepetitive calculations involved inthe design of a satisfactory control system. To understand and use a computer-aided ... a computer-aided analysis and design package, one must first a chieve a conceptual understanding of the theory and processes involved in the analysis and synthesis of control systems. Once the...

Ngày tải lên: 04/07/2014, 05:28

Ngày tải lên: 18/12/2013, 09:10

Ngày tải lên: 15/02/2014, 07:20

Ngày tải lên: 07/03/2014, 01:20

... relationship among specialized analysis tools, Arthur M. Langer Analysis and Design of Information Systems Third Edition 16 Analysis and Design of Information Systems System Boundaries. This provides ... requirements to system requirements 5. Design the database and accompanying applications 6. Build, test, and implement the database and applications 20 Analysis and Design of Information Systems Transition ... design of the program structure, Requirement Application Design Database Design Network Design Outline System Design Audit & Control Design Back-up & Recovery Design Transition Design System Test Plan Final...

Ngày tải lên: 13/05/2014, 19:21

... finite length design by properly addressing the rate splitting issue, and finally, conclusions and perspectives are drawn in Section 5. 2. System Description and Notations 2.1. Definitions and Notations. ... University, November 2002. 2 EURASIP Journal on Wireless Communications and Networking analysis and the design remain fully analytical and linear in the parameters, that is fountain distributions are ... and to finite length design. In the next section, we draw the density evolution analysis under Gaus- sian approximation, and show the advantages of considering a joint decoder. 3. Asymptotic Analysis...

Ngày tải lên: 21/06/2014, 22:20

... primarily synchronization and channel estimation for PLC and xDSL systems, and performance analysis of wireless MIMO systems. Francisco Javier Ca ˜ nete received the M.S. and Ph.D. degrees in telecommunication engineering ... theory and numerical methods for characterization,” IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, vol. 47, no. 5, pp. 655– 674, 2000. [15] E. A. Lee and D. ... and transmission techniques for wireless systems and power-line com- munication systems. Jos ´ eTom ´ as Entrambasaguas received the M.S. and Ph.D. deg rees in 1975 and 1990, respectively, both from...

Ngày tải lên: 22/06/2014, 20:20

... transformation and inverse transformation to convert between “frequency” and “time”. b. Spectral leakage and aliasing. c. Smoothing and windowing operations in time and frequency. d. Time and frequency ... and also their computed results, can be named and stored in a special hard disk folder. The DFT and IDFT, and especially the FFT and IFFT, are not only very fast but also very easy to learn and ... operations. e. Power spectrum and cross-spectrum. f. Multiplication and convolution using the DFT and IDFT. g. Relationship between convolution and multiplication. h. Autocorrelation and cross-correlation. i....

Ngày tải lên: 04/07/2014, 07:20

... negative frequencies. The value at 12 DISCRETE-SIGNAL ANALYSIS AND DESIGN identiÞed in both time and amplitude. If the sequence is nonrepeating (random), or if it is inÞnite in length, or if it is ... N /2, is labeled both as + 4and 4. This location is special and will be important in later work. In computerized waveform analysis and design, it is a good practice to use n =0asa starting point ... consisting of positive- and negative-frequency harmonics, to be discussed in detail later. For example, if Fig. 1-1c and d are frequency values X (k ), then −4to−1in Fig. 1-1c and +4to+7 in Fig. 1-1d...

Ngày tải lên: 04/07/2014, 07:20

... operation 72 DISCRETE-SIGNAL ANALYSIS AND DESIGN Hann: X 3 (k) = 1 N N−1  n=0  1 2  1 −  cos  2π n N − 1  ×  exp  j2π n N (38.0 −k)  The two-sided baseband signal is translated up ... center frequency of +38.0, where it shows up as a lower sideband and an upper sideband. The way that the Hamming dominates from 38.0 to 41.0 and the Hanning takes over starting at 42 is quite noticeable. ... 74 DISCRETE-SIGNAL ANALYSIS AND DESIGN 33 34 35 36 37 38 39 40 41 42 43 44 45 −50 −40 −30 −20 −10 0 10 k (a) (b) dB Rectangular Hamming Hanning 33...

Ngày tải lên: 04/07/2014, 07:20

Ngày tải lên: 04/07/2014, 07:20

Ngày tải lên: 04/07/2014, 07:20

Ngày tải lên: 07/08/2014, 10:20