**Control Techniques for Electric Drives:**

**Block Diagram of Electric Drive System**** :** It is normal practice in control engineering to represent a …

**Closed Loop Control of DC Motor**** :** Closed Loop Control of DC Motor – The dynamic behaviour …

**Control System Performance :** From the foregoing discussion on control systems it can be seen that the …

**Controller Design Frequency Response :** The Controller Design Frequency Response (or root locus) alters or reshapes the …

**Controller Transfer Function**** :** While a Controller Transfer Function is designed to improve the behavior of a …

**Correlation Between Frequency and Transient Response**** :** As has been stated, the use of frequency response for …

**Design of Controllers for Linearly Varying Inputs :** The Design of Controllers for Linearly Varying Inputs discussed …

**Exponential Variation of the Input to the Controller :** The linear Exponential Variation of the input to …

**Features of Electric Drive System**** :** Before applying advantageously the control principles to electric drive systems to …

**Frequency Response Transfer Function**** :** The previous sections- show that with the time response of a system, …

**Introduction Control Techniques in Electric Drives :** An electric drive is a well established industrial drive as …

**Magnitude Optimum**** :** The design of a controller based on the principle Magnitude Optimum that it allows all …

**Methods of Compensation in Control System :** The Different Methods of Compensation in Control System are Cascade Compensation Feedback …

**Nyquist Criterion**** :** This stability criterion enables one to establish the stability of a …

**Phase Margin Optimum :** The method can be based on the phase margin in which the controller …

**Polar Plot for Frequency Response**** :** One of them is the Polar Plot for Frequency Response representation. …

**Relative Stability from the Nyquist Plot :** Relative Stability from the Nyquist Plot – The considerations discussed …

**Root Locus Plot**** :** In the electrical drives employing closed loop control techniques, it is often necessary …

**Routh Hurwitz Criterion**** :** The Routh Hurwitz Criterion states that the system is stable if the Routh …

**Signal Flow Graph of DC Motor in Electric Drive System** Signal Flow Graph of DC Motor in Electric Drive System: The Signal Flow Graph of DC …

**Stability Control Drives**** :** The concept of stability is very well known. By the term stability one …

**Stability from Bode Plot of Open Loop Transfer Function** Stability from Bode Plot of Open Loop Transfer Function: The Nyquist criterion details how the open …

**Stability from Log Magnitude Angle Diagram**** :** Yet another way of portraying the frequency response is to …

**Symmetrical Optimum :** Symmetrical Optimum – Sometimes automatic control systems contain integrating also besides first order delay elements, …

**Transfer Function of a Field Controlled DC Motor**** **Transfer Function of a Field Controlled DC Motor: The speed of a dc motor can be …

**Transfer Function of Armature Controlled DC Motor**** :** The speed of a dc motor can be controlled …

**Transient Response of Closed Loop Drive System**** :** The Transient Response of Closed Loop Drive System is …

**Uncompensated Large Time Constants**** :** It is possible to compensate only one Uncompensated Large Time Constants using …

**Ward Leonard Drive Transfer Function :** In the classical Ward Leonard Drive Transfer Function, the dc drive …