I want modern control theory free text book download

Digital Control Engineering M. Gopal Recent developments in LSI technology and the consequent availability of inexpensive microprocessors, memory chips and analog-to-digital converters have made it possible to use computers as an integral part of control systems. This book presents a theory of control that is relevant to the analysis and design of computer controlled systems. Among its characteristics, the book:

• contains appendices summarizing the relevant reference material;
• summarizes the theoretical and practical aspects of a large class of state space transformation and design domain algorithms;
• describes the background to many current approaches to self-tuning control;
• includes a computer aided design package;
• discusses the basic characteristics of stepper motors and their associated drives;
• presents important hardware and software aspects of the implementation of digital control algorithms using microprocessors;
• includes three case studies on microprocessor-based control.

Control Systems Engineering (2 / e) I.J. Nagrath and M. Gopal The book offers an integrated treatment of continuous nonlinear systems and discrete linear and continuous time for two undergraduate courses or an undergraduate course and a postgraduate course. The emphasis is on the interdisciplinary nature of the subject and examples have been drawn from various engineering disciplines to illustrate the basic concepts of the system. Special emphasis is placed on the modeling of practical systems involving hardware; Control components of a wide variety are covered comprehensively. The time domain and frequency domain techniques and the design of control systems have been extensively treated and their interrelationship established. Stability concepts and criteria are built progressively and are interspersed in suitable places that culminate in the generalized criteria of Liapunov and Popov. A chapter on sampled data control systems covering analysis, stability and design has been added in this edition. Modern approaches are introduced through a complete chapter on state variables for continuous and discrete time systems; It includes the design of placement of observers and poles. A new chapter on optimal control gives both transfer function and time domain approaches. The problem of the optimal linear controller is dealt with through dynamic programming. This book ends with a chapter on nonlinear control systems and their analysis through the phase plane and describing the function techniques.