The intent of this book is to emphasize the basics of control system. Thes basics include transfer function, block diagram, signal flow graph, and the matrix approach in solving simultaneous differential equations. Additionally, the they also include Bode plot, realization diagram, and stability analysis. The book also shows digital control system as an extension of analog control system. To illustrate these basics, the author used extensive figures and tables. Each figure consists of sketches and mathematical equations shown on its text. Such an approach minimizes backward referencing from a figure to its text and vice versa. After a careful study of the book, an engineer should be able to design, analyze, or test a control system.
Starting from the basics of a power distribution system, the author explained the mechanism of how grounding noise currents arise in a facility transformer. This is followed by computer simulation of short circuit or fault currents required in sizing the interrupting capacity of a circuit breaker. Chapter 3 closely examines propagation constant and characteristic impedance of a transmission line. The model of a transmission line can explain most of the electrical or electronics problems. Some of these problems include redundancy in power systems, and grounding noise voltage. Often, an engineer needs to find the cause of a failure in a system. He must have, at his disposal, a systematic method of testing to find the most probable cause of failure. This book recommends the boundary approach in finding such a cause. Testing may involve characterizing a device or a signal. An example of how an unknown device may be characterized is shown in this book. In this book, a grounding noise voltage is treated as a signal. It is, perhaps, the most common cause of failures in electronic systems. To illustrate an example of how a signal may be characterized and address grounding itself, Chapter 7 shows experiments on how a grounding noise voltage may be minimized. Finally, Chapter 8 is a recommended approach in designing a grounding system.
This book is about computer simulation, experiments, and theoretical approaches to unify various strategies in black jack. The computer simulation uses the simple strategy that a player must stay when the number of low cards is two or more. Otherwise, when the number is exactly one then the player must hit. Contrary to the author's expectations, the simple strategy did give consistent positive results for the player. Experimenting further, the author found other observations that are important in winning such as when to start playing, busting condition of the dealer, and the shifting property of the cards. The author unified all the observations using the TM*L model. In the model, T represents the tens 10, J, Q, and K. The M* represents the medium cards 7, 8, and 9, and the ace. L represents the low cards from 2 to 6. He also represented the game using a partial differential equation. The solution of the equation showed the sensitivity of winning with the tens, the medium cards, and the low cards. In addition, the solution verified the shifting property of the cards. The property shows that good cards move from the player to the dealer. Conversely, they can move from the dealer to the player.
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