Axaykumar Mehta – författare

This book presents novel algorithms for designing Discrete-Time Sliding Mode Controllers (DSMCs) for Networked Control Systems (NCSs) with both types of fractional delays namely deterministic delay and random delay along with different packet loss conditions such as single packet loss and multiple packet loss that occur within the sampling period. Firstly, the switching type and non-switching type algorithms developed for the deterministic type fractional delay where the delay is compensated using Thiran’s approximation technique. A modified discrete-time sliding surface is proposed to derive the discrete-time sliding mode control algorithms. The algorithm is further extended for the random fractional delay with single packet loss and multiple packet loss situations. The random fractional delay is modelled using Poisson’s distribution function and packet loss is modelled by means of Bernoulli’s function. The condition for closed loop stability in all above situations are derived using the Lyapunov function. Lastly, the efficacy of the proposed DSMC algorithms are demonstrated by extensive simulations and also experimentally validated on a servo system.

This book proposes a proportional integral type sliding function, which does not facilitate the finite reaching and hence the responses of the load voltage results in an exponential steady state. To facilitate finite time reaching, it also presents the new Integral Sliding Mode Control with Finite Time Reaching (ISMCFTR). The book also extends the application of the proposed controller to another type of PEC, the DC-DC Boost converter, and also proposes the PI type sliding surface for the Zeta converter, which is non-inverting type Buck Boost converter. An important source of practical implementations, it presents practical implementations as simulation and experimental results to demonstrate the efficacy of the converter.

This book gathers selected research papers presented at the International Conference on Power, Control and Communication Infrastructure 2019 (ICPCCI 2019), organized by the Institute of Infrastructure, Technology, Research and Management (IITRAM), Ahmedabad, Gujarat, India, on July 4–5, 2019. It presents the latest advances, trends and challenges in control system technologies and infrastructures. The book addresses a range of solutions to the problems faced by engineers and researchers to design and develop controllers for emerging areas like smart grid, integration of renewable energy, automated highway systems, haptics, unmanned aerial vehicles, sensor networks, robotics, formation control and many more. The solutions discussed in this book encourage and inspire researchers, industry professionals and policymakers to put these methods into practice.

This book gathers selected research papers presented at the International Conference on Power, Control and Communication Infrastructure 2019 (ICPCCI 2019), organized by the Institute of Infrastructure, Technology, Research and Management (IITRAM), Ahmedabad, Gujarat, India, on July 4–5, 2019. It presents technological developments in the fields of communications infrastructure which comprise of architecture, products, and network connections that allow for communications over the long distances. The book includes some innovative ideas in the field of communication infrastructure, specially satellite communication, navigation systems, artificial neural network, encryption techniques, and some other infrastructure-related developments. The solution approaches provided in this book encourage and inspire researchers, industry professionals, and policymakers to put these methods into practice.

Dieses Buch schlägt eine proportionale integrale Gleitfunktion vor, die keine endliche Erreichung ermöglicht und daher zu einer exponentiellen stationären Spannungsantwort führt. Um eine endliche Erreichung zu ermöglichen, präsentiert es auch die neue Integral Sliding Mode Control with Finite Time Reaching (ISMCFTR). Das Buch erweitert auch die Anwendung des vorgeschlagenen Reglers auf einen anderen Typ von leistungselektronischem Umrichter, den DC-DC-Boost-Umrichter, und schlägt auch die PI-typische Gleitfläche für den Zeta-Umrichter vor. Als wichtige Quelle für praktische Umsetzungen präsentiert es Simulationen und experimentelle Ergebnisse, um die Wirksamkeit des Umrichters zu demonstrieren.

This book presents several robust sliding mode protocols for achieving the formation and tracking of Quadcopter swarm for a given pattern. In entire book, the concept of leader-follower formation control of a multi-agent system is exploited for deriving the protocols and the graph theory is used to represent the communication between the Quadcopters. The book covers two types of formation protocols of the Quadcopter swarm namely, continuous-time sliding mode protocols and discrete-time sliding mode protocols. First, the continuous-time higher order sliding mode protocols using super-twisting algorithm are designed for formation using linear and non-linear models of Quadcopter. Then, the discrete-time sliding mode protocols using power rate reaching law, discrete-time super twisting algorithm, and exponential reaching law are presented. The protocols are thoroughly analysed for robustness, chattering, control effort, and convergence time for achieving the formation. Also, the stability conditions using the Lyapunov function are derived to ensure the stability of the swarm with each protocol. Further, each chapter includes extensive simulation and comparative studies to show the efficacy of each protocol. The book will be useful to graduate students, research scholars, and professionals working in the domain of civilian and military usage of the drone technology.