## Steady State Error: What is it? (Steady-State Gain, Value & Formula)

What is Steady State Error? Steady-state error is defined as the difference between the desired value and the actual value of a system output in the limit as time goes to infinity (i.e. when the response of the control system has reached steady-state). Steady-state error is a property of the input/output response for a linear … Read more

## Open Delta Connection of Transformer: Calculation, Formula And Diagram (V-V Connection)

What is an Open Delta Connection Transformer? An open delta connection transformer uses two single-phase transformers to provide a three-phase supply to the load. An open delta connection system is also called a V-V system. Open delta connection systems are usually only used in emergency conditions, as their efficiency is low when compared to delta-delta … Read more

## Nyquist Stability Criterion: What is it? (Plus Matlab Examples)

What is Nyquist Stability Criterion? Nyquist stability criterion (or Nyquist criteria) is defined as a graphical technique used in control engineering for determining the stability of a dynamical system. As Nyquist stability criteria only considers the Nyquist plot of open-loop control systems, it can be applied without explicitly computing the poles and zeros of either … Read more

## Types of Controllers | Proportional Integral and Derivative Controllers

What is a Controller? In control systems, a controller is a mechanism that seeks to minimize the difference between the actual value of a system (i.e. the process variable) and the desired value of the system (i.e. the setpoint). Controllers are a fundamental part of control engineering and used in all complex control systems. Before … Read more