Time Delay Systems 20017317 Руб.
Time-delay systems consist of delay differential equations that combine the continuous aspect of differential equations and the sample features of difference equations. These equations have advanced and retarded, fixed or flexible delays. Their origin is imputed to Condorcet in 1767, in his astronomical three-body problem. This approach has been extensively studied in various scientific studies in Physics, Engineering, Chemistry, Biology. Early, the interest for such a modeling approach also appears in Economics. In the 1930''s, Kalecki presented a delay business cycle model and Tinbergen proposed a delay system for the shipbuilding sector. This book introduces to the main concepts and methods for the time-delay systems with application to economics. A variety of advanced resolution methods is presented together with numerical examples: forward integration by steps, Lambert W function, mathematical transforms and circuit analysis. Economic models with delay from the standard economic...7250 Руб.
This book presents robust sliding mode control for a class of linear continuous time delay systems with mismatched parametric uncertainties. The problem of delay in-dependent as well as delay dependent stability analysis has been studied and subsequently robust control with sliding mode control are also investigated for uncertain time delay systems. Delay independent as well as delay dependent sufficient conditions for the existence of linear sliding surface which are in terms of linear matrix inequality (LMI) frame work are studied, based on which the design of reaching motion controller is also studied. The objective of the present work is to implement the delay dependent stability analysis of LMI approach with sliding mode control to uncertain power system model with communication delay for load frequency control. The reaching motion controller is switched to two other control strategies namely, (i) equivalent Control Law and (ii) State Feedback Law.3382 Руб.
As the complexity and operational speed of today's Systems-on-Chip increase, measuring and characterizing SoC’s building blocks are becoming more challenging. Embedded measuring techniques for system characterization, such as built-in self-test, are therefore becoming necessities. A Time-to-Digital Converter (TDC) is a device that has been widely used to measure the time intervals between two signal edges. The measurement resolution of a simple TDC architecture is limited by the minimum gate delay in the IC fabrication process. When the required time measurement resolution is smaller than the minimum gate delay, many TDC architectures include Time Difference Amplifiers (TDA) to pre-amplify the very short input time intervals. However, the gain of the TDA is usually sensitive to process, voltage, and temperature variations. This work researches techniques on improving measurement characteristic of TDCs and demonstrates a single-stage Vernier TDC with a constant gain TDA. The final...4615 Руб.
In this book the implementation of the Lyapunov functional to the parametric optimization for varies systems with delays is presented. It was shown that the value of the Lyapunov functional at initial state of the system is equal to the value of the square performance index of quality in the parametric optimization problem. It was given the method to obtain the analytical formulas for the coefficients of the functional to make possible calculation of the value of the functional at initial state of the system with time delay. In this book many examples of application of the Lyapunov functional in parametric optimization to the automatic control systems are given. This book can be helpful for automatic control students.2251 Руб.
Mila has 7 seconds. 7 seconds to fight. 7 seconds to escape. Seeking a new life on the futuristic Isles, Mila’s time runs out – she’s captured by Agents, who implant her with a phone that broadcasts her every move. Now she’s on the run, hounded by an elite fighting force which is convinced she poses a dangerous threat to society. Her only advantage: a seven second delay. It’s a race against time.662 Руб.
Time Zones is a motivating new four-skills series for teenagers, with a strong international focus. It combines a communicative approach to learning English with stunning National Geographic images, video, and content. The series features educational cont1427 Руб.
Relay feedback autotuning is extended to the various fields of process control industries. A new time domain technique yields significantly improved accuracy over the conventional relay feedback method by deriving the explicit expressions for unknown process model parameters in terms of the output limit cycle data. Next, the applicability of the relay feedback is shown by identifying nonlinear processes with static nonlinearities. Major design objectives are achieved using online tuning methodology for certain critical applications.5415 Руб.
In this book, we derive a sufficient condition for asymptotic stability of the zero solution of delay-difference system of Hopfield neural networks and cellular neural networks in the terms of certain matrix inequalities by using the second Lyapunov method. The result has been applied to obtain new stability conditions for some classes of delay-difference equation such as delay-difference system of Hopfield neural networks with multiple delays, delay-difference control system of Hopfield neural networks, delay-difference control system of Hopfield neural networks with multiple delays, delay-difference system of Hopfield neural networks with time-varying delay, delay-difference system of Hopfield neural networks with multiple time-varying delays, delay-difference system of cellular neural networks with multiple delays, delay-difference control system of cellular neural networks, delay-difference control system of cellular neural networks with multiple delays, delay-difference system of...4615 Руб.
The Time Traveller has built a time machine and has gone into the future to the year 802,701. He expects to find a better world with highly-intelligent people and great inventions. Instead, he finds that people have become weak, child-like creatures. They dance and sing and wear flowers. They seem happy, but why are they so frightened of the dark? And who or what has taken his time machine? Will the Time Traveller ever be able to return to the present?799 Руб.