Macleans University Guide 2006

Macleans University Guide 2006 | 11,6 Mb

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کتاب Mathematics For Electrical Engineering And Computing

Newnes | ISBN 075065855X | July 2003 | PDF | 576Pages | 4,4 Mb

Mathematics for Electrical Engineering and Computing embraces many applications of modern mathematics, such as Boolean Algebra and Sets and Functions, and also teaches both discrete and continuous systems – particularly vital for Digital Signal Processing (DSP). In addition, as most modern engineers are required to study software, material suitable for Software Engineering – set theory, predicate and prepositional calculus, language and graph theory – is fully integrated into the book.

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کتاب Control Engineering - A Guide for Beginers (2004)

Contents:

1 Basic concepts ............................................................................ 7
1.1 Introduction .................................................................................................. 7
1.2 Concepts and designations ........................................................................ 7
1.3 Operation and control .................................................................................. 7
1.4 The control action ...................................................................................... 11
1.5 Construction of controllers ....................................................................... 12
1.6 Analog and digital controllers ................................................................... 18
1.6.1 Signal types .................................................................................................. 18
1.6.2 Fundamental differences .............................................................................. 20
1.7 Manipulating devices ................................................................................. 23
1.8 Other methods of achieving constant values .......................................... 25
1.8.1 Utilizing physical effects ............................................................................... 25
1.8.2 Constructional measures ............................................................................. 25
1.8.3 Maintaining constant values by operation ................................................... 26
1.9 Main areas of control engineering ............................................................ 27
1.10 Tasks of the control engineer .................................................................... 28
2 The process ................................................................................ 29
2.1 Dynamic action of technical systems ...................................................... 29
2.2 Processes with self-limitation ................................................................... 32
2.3 Processes without self-limitation ............................................................. 33
2.4 Processes with dead time ......................................................................... 35
2.5 Processes with delay ................................................................................. 37
2.5.1 Processes with one delay (first-order processes) ........................................ 38
2.5.2 Processes with two delays (second-order processes) ................................. 39
2.5.3 Processes with several delays (higher-order processes) ............................. 41
2.6 Recording the step response .................................................................... 41
2.7 Characteristic values of processes .......................................................... 43
2.8 Transfer coefficient and working point .................................................... 43

Inhalt
3 Continuous controllers .............................................................. 45
3.1 Introduction ................................................................................................ 45
3.2 P controller ................................................................................................. 45
3.2.1 The proportional band .................................................................................. 47
3.2.2 Permanent deviation and working point ...................................................... 49
3.2.3 Controllers with dynamic action ................................................................... 52
3.3 I controller ................................................................................................... 53
3.4 PI controller ................................................................................................ 54
3.5 PD controller ............................................................................................... 57
3.5.1 The practical D component - the DT element ............................................ 60
1
3.6 PID controller .............................................................................................. 61
3.6.1 Block diagram of the PID controller ............................................................. 62
4 Control loops with continuous controllers .............................. 63
4.1 Operating methods for control loops with continuous controllers ....... 63
4.2 Stable and unstable behavior of the control loop ................................... 64
4.3 Setpoint and disturbance response of the control loop ......................... 65
4.3.1 Setpoint response of the control loop .......................................................... 66
4.3.2 Disturbance response .................................................................................. 67
4.4 Which controller is best suited for which process? ................................ 68
4.5 Optimization ................................................................................................ 69
4.5.1 The measure of control quality ..................................................................... 70
4.5.2 Adjustment by the oscillation method .......................................................... 71
4.5.3 Adjustment according to the transfer function or process step response ... 72
4.5.4 Adjustment according to the rate of rise ...................................................... 75
4.5.5 Adjustment without knowledge of the process ............................................ 76
4.5.6 Checking the controller settings .................................................................. 77

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کتاب Teaching and Learning Vocabulary: Bringing Research to Prac

Although proficiency in vocabulary has long been recognized as basic to reading proficiency, there has been a paucity of research on vocabulary teaching and learning over the last two decades. Recognizing this, the U.S. Department of Education recently sponsored a Focus on Vocabulary conference that attracted the best-known and most active researchers in the vocabulary field. This book is the outgrowth of that conference. It presents scientific evidence from leading research programs that addres  

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کتاب Spss for Introductory Statistics: Use and Interpretation

I had little experience in statistics and really needed a STEP-BY-STEP guidebook that was light on theories and "robust" on the practical stuff. I was able to go through this book in two days, having now felt rather comfortable with the SPSS program. The authors have a way of making statistics very approachable using simple words. They also have examples on how you would write up the stat results for reports and publications.
 

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