Syllabus ,DCS Question papers, Answers, important Question DIGITAL CONTROL SYSTEMS, R13 Regulation, B.Tech , JNTUK,Syllabus, download,
Introduction and signal processing Introduction to analog and digital control systems – Advantages of digital systems – Typical examples – Signals and processing – Sample and hold devices – Sampling theorem and data reconstruction – Frequency domain characteristics of zero order hold.
Z–transformations Z–Transforms – Theorems – Finding inverse z–transforms – Formulation of difference equations and solving – Block diagram representation – Pulse transfer functions and finding open loop and closed loop responses.
State space analysis and the concepts of Controllability and observability State Space Representation of discrete time systems – State transition matrix and methods of evaluation – Discretization of continuous – Time state equations – Concepts of controllability and observability – Tests (without proof).
Stability analysis Mapping between the S–Plane and the Z–Plane – Primary strips and Complementary Strips – Stability criterion – Modified routh’s stability criterion and jury’s stability test.
Design of discrete–time control systems by conventional methods Transient and steady state specifications – Design using frequency response in the w–plane for lag and led compensators – Root locus technique in the z– plane.
UNIT – VI: State feedback controllers: Design of state feedback controller through pole placement – Necessary and sufficient conditions – Ackerman’s formula.