JNTUK R20 3-1 Control Systems Material/Notes PDF Download
Mathematical Modeling of Control Systems
Classification of control systems – open loop and closed loop control systems and their differences – Feedback characteristics – transfer function of linear system, differential equations of electrical networkstranslational and rotational mechanical systems – transfer function of Armature voltage controlled DC servo motor – block diagram algebra – signal flow graph – reduction using Mason’s gain formula
Time Response Analysis and Controllers
Standard test signals – time response of first and second order systems – time domain specifications – steady state errors and error constants – effects of proportional (P) – proportional integral (PI) – proportional derivative (PD) – proportional integral derivative (PID) systems.
Stability Assessment Techniques
The concept of stability – Routh’s stability criterion – limitations of Routh’s stability, root locus concept – construction of root loci (simple problems) – Effect of addition of Poles and Zeros to the transfer function.
Frequency Response Analysis
Introduction to frequency domain specifications – Bode diagrams – transfer function from the Bode diagram –Polar plots, Nyquist stability criterion- stability analysis using Bode plots (phase margin and gain margin).
Classical Control Design Techniques
Lag, lead, lag-lead compensators – physical realisation – design of compensators using Bode plots.
State Space Analysis of Linear Time Invariant (LTI) Systems
Concepts of state – state variables and state model – state space representation of transfer function – diagonalization using linear transformation – solving the time invariant state equations – State Transition Matrix and its properties- concepts of controllability and observability.
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