Posts Tagged ‘control systems’

What is Transfer Function?

April 18th, 2014 | 1 Comment | Posted in Panel Building
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Last but one tutorial from the series about the Control Systems topic written by Nasir, our active member of the community. Will this definition help you?

Introduction

In Analyzing and designing of any system, the most important factor is the mathematical modeling of that system. There are many mathematical models to describe control systems.

In physics, transfer function maybe defined as mathematical representation (in terms of frequency) of interrelation between input and output in linear time uninterrupted systems with zero pint equilibrium and zero initial conditions. If talking particularly about control systems then it can be defined as the ratio of the Laplace transform of the output variable to the Laplace transform of the input variable, with all zero initial conditions.

Transfer function is function of complex variables. The transfer function can be obtained by simple algebraic jugglery of differential equations that illustrates the system. Transfer function can represent higher order systems also, even infinite dimensionless systems which regulates on partial differential equations.

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Introduction to Laplace Transform

April 11th, 2014 | Make a comment | Posted in Panel Building
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Check the next part of Nasir’s tutorial on Control Systems. What do you know about Laplace Transform?

Definition

Laplace transformation converts differential and integral equations into rather simple algebraic equations. Laplace transform is nothing but a simple operational tool, used to solve linear differential equations with constant coefficients.

The transformation is only applied to general signals and not to sinusoidal signals. Also, it cannot handle steady state conditions. It enables us to study complicated control systems with integrators, differentiators and gains.

On basis of Laplace transformation we analyze LCCODE’s and circuits with several sources, inductors, resistors and capacitors.

For a given function f (t) such that t Introduction to Laplace Transform_symbol1 0, its Laplace transformation is written as F(s) = L {f (t)} and is written as:

Introduction to Laplace Transform_1

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Time Domain Analysis of Control Systems

March 18th, 2014 | Make a comment | Posted in Panel Building
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New part of Nasir’s tutorial on Control Systems. You too can send us your articles, debates, experiments or tutorials.

Introduction

In our earlier articles we discussed about control systems. The system, in which, we arrange and combine constituents in such a way that our desired output is obtained.

Also, the system is controlled so that the stability of system in not disturbed in any span of time. It depends upon two factors:

  1. Desired output
  2. Stability

Time Domain Analysis of Control Systems 1

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Difference Between Open Loop & Closed Loop Systems

March 10th, 2014 | 3 Comments | Posted in Panel Building
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Check the second part of Nasir’s tutorial on Control systems!

Difference between Open Loop & Closed Loop Systems 1

Control systems are used to arrange and manage components in a way that the required condition or output is obtained. The word ‘control’ itself shows the command over any system. It is controlled when the systems is stable.

There are two attributes of control system:

  1. Stability
  2. Desired output

A control system can be functioned electrically, mechanically, pressure by fluid (gas or liquid), or it can be combination of these ways. In the preceding tutorial we introduced control systems, their principle of working, the variables involved in the functioning of control systems and the basic types.

In this tutorial we will be conferring over the major types of control systems namely: Open loop systems and closed loop systems. The tutorial will deal with the chief differences between the two types. Let’s have a look on the basic working of the two systems:

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Introduction to Control Systems

March 5th, 2014 | 6 Comments | Posted in Panel Building
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Our tutorials maker Nasir is back with a new theme: Control Systems. 10 parts are planned, so enjoy the first one!

Control system is a way of arranging and combining components in such a way that the desired output is obtained. In other words, a system is said to be “controlled”, if it’s working in a stable mode without getting unstable in any span of time.

From the above definition, one can say that a controlled system must have two attributes, which are:

  1. Stability
  2. Desired output

Introduction to Control Systems

A control system can be functioned electrically, mechanically, pressure by fluid (gas or liquid), or it can be combination of these ways. But it more preferred to operate this system by electrical means especially when computer is involved, even though interfusion are common these days.

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