Complete Applications of the Laplace Transform

Now that we have introduced the Laplace transform, let us see what are the applications of the Laplace transform. Please keep in mind that with the Laplace transform we actually have one of the most powerful mathematical tools for analysis, synthesis, and design.

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Applications of the Laplace Transform

Being able to look at circuits and systems in the s-domain can help us to understand how our circuits and systems really function. In this chapter, we will take an in-depth look at how easy it is to work with circuits in the s-domain.

In addition, we will briefly look at physical systems. We are sure you have studied some mechanical systems and may have used the same differential equations to describe them as we use to describe our electric circuits.

applications of the laplace transform

Actually that is a wonderful thing about the physical universe in which we live; the same differential equations can be used to describe any linear circuit, system, or process. The key is the term linear.

A system is a mathematical model of a physical process relating the
input to the output.

It is entirely appropriate to consider circuits as systems. Historically, circuits have been discussed as a separate topic from systems, so we will actually talk about circuits and systems in this chapter realizing that circuits are nothing more than a class of electrical systems.

The most important thing to remember is that everything we discussed in the last chapter and in this chapter applies to any linear system.

In the last chapter, we saw how we can use Laplace transforms to solve linear differential equations and integral equations. In this chapter, we introduce the concept of modelling circuits in the s-domain.

We can use that principle to help us solve just about any kind of linear circuit. We will take a quick look at how state variables can be used to analyze systems with multiple inputs and multiple outputs. Finally, we examine how the Laplace transform is used in network stability analysis and in the network synthesis.

We will learn the applications of the Laplace transform below:

  1. Laplace transform circuit element models
  2. Laplace transform circuit analysis
  3. Laplace transform transfer functions
  4. Laplace transform state variables
  5. Laplace transform network stability
  6. Laplace transform network synthesis

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