Transfer function Definition A transfer function is expressed as the ratio of Laplace transform of output to the Laplace transform of input assuming all initial condition to be zero. Consider a system whose time domain block diagram is where,

## Control System Basics

Article updated on November 28th, 2017 Our daily activities are getting automated every day. Control System plays an important role in making our life automated and modernized. A microwave, refrigerator, an air conditioner, a geezer, an automatic iron, are some

## Proportional-Integral (PI) Controllers

Proportional-Integral (PI) controllers are used in many industrial control applications. The main purpose of using Proportional and Integral (PI) in process system is to improve the steady-state accuracy of the system without affecting the stability of the system. Proportional action

## Frequency Domain Analysis | Advantages

Frequency Response The Frequency Response of the system is the steady-state response of the system obtained as the output when a sinusoidal input signal is given to the system. For determining the frequency response of a control system sinusoidal signal

## Proportional (P), Integral (I), Derivative (D) Controllers Usage Conditions

1. When does the Proportional (P) Controller is used? Answer. Proportional (P) Controller is used during the following conditions: Load Changes are small Offset (error exist due to difference between steady state value and desired value) can be tolerated. The

## Distributed Control System (DCS) in Power Plant

Usage of Single Computer for control of all the process variables of a plant would result in the loss of control activities in the plant if a failure occurs in the master single computer. Also, the time required for accessing

## Extended Kalman Filter | Algorithm & Applications

In the previous article, we had learned about Kalman filter. As Kalman filter assumes linear system but finds greatest applications in non-linear systems. Kalman filter assumes an approximate solution, describe the deviations from the reference by linear equations. Kalman filter has

## Kalman Filter | Algorithm & Applications

The Kalman filter is a recursive state space model based estimation algorithm. In other words, it is an optimal recursive data processing algorithm. Kalman filter is also called as the Predictor-Corrector algorithm. This filter is named after Rudolph E. Kalman,

## Servomechanism | Servomotor & Applications

Servomechanism It is a feedback control system in which a controlled variable or the output is a mechanical position or its time derivatives like velocity and acceleration. Servomotors have two main classifications based on servomechanism i.e. 1. DC Servomotors Armature

## Signal Flow Graph

Article updated on October 20th, 2017In case of block diagram reduction diagram, there is no standard procedure for reducing the block diagram to evaluate its transfer function. Also, the block diagram reduction technique is tedious and is difficult to choose