Thursday, 17 December 2020

Modern control engineering


Modern control engineering, while most engineering disciplines tend to be specialized, this does not apply to control engineering. In one way or another, control geometry is the adhesive that binds the engineering branches together (this is what the owner of the picture is trying to say).


For this reason, the applications of control engineering are theoretically unlimited; From the dishwasher to robots, to rockets and space ships.


Control engineering

Is the applied aspect of control theory. Control theory arose mainly from the mathematical and engineering studies of the behavior of dynamic systems (that is, those systems whose change in time can be described by a fixed rule).


Due to the general nature of the theory, its applications are not limited to engineering, but also extend to social sciences, economics, navigation, climate modeling, physiology, and even the study of genes. Despite this, control engineering remains the most popular and influential application of the theory.


Control engineering is the science concerned with analyzing and designing methods to influence the behavior of different systems so that they operate in the desired manner. Systems may be electrical, mechanical, chemical, biological, or even financial, or a mixture of all of these.


The main stages of designing any control system?


1- Choose an appropriate physical system, and derive its technical specifications based on the required:

Suppose what is desirable in our example is that the temperature of the place remains at 24 degrees Celsius. Of course, just wanting will not cause anything to happen.


That is why we must search for a physical system that can change the temperature, be a fan, for example. You also need a physical system that can read the ambient temperature, which is why you might consider using a digital thermal sensor, for example.


2- Converting the physical system into an engineering scheme:

In this step, all parts of the system are reduced to their basic form. For example, the fan is reduced to a simple motor circuit, because all other details (color, size, etc.) are not important from the point of view of the control problem.


Of course, the reduction is not done arbitrarily, but rather according to rules that are determined based on the nature of the system and the accuracy of the performance required of it. Also in this stage, it is shown how the different parts of the system are connected to each other.


3- mathematical modeling:

This is the first appearance of mathematics, and of course, it will not be the last. As a first step, the different parts of the system are converted into mathematical equations.


There are two ways to obtain these equations: either by deriving them from early physical principles (for example, Newton's laws of motion for mechanical systems), or by laboratory experiments. As a second step.



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