(459f) Reality of Remote EXPERIMENTS IN Dynamics and CONTROL FROM Zacatecas Mexico IN the Laboratory of the University of Tennessee at Chattanooga

Currently, the use of internet to do experiments in a remote laboratory is a reality. The experiments were performed in the University of Z Mexico, at any day, any time, using the two non-interacting tanks in the laboratory of the University of X at Y. The feed from the first tank to the second tank is by gravity. A mathematical model was constructed and it was necessary to linearize it.

The first perturbation was to turn on the equipment and to let it to reach the steady state. After that, one step perturbation was applied, with magnitude A, and in other experiment, after the start of the equipment, a pulse perturbation was applied. For both cases, the response of the height of the level of the second tank was recorded and the experimental results were compared with the predictions of the model.

The transfer function for this system of non interacting tanks for the liquid level of the second tank is:

If we apply a step perturbation, the response of the of the second tank is

Substituting the specific values, we obtain:

The comparison of the predictions of this equation with the experimental results obtained after using the remote laboratory of the University of Tennessee campus Chattanooga, are shown in Figure 1

Now, applying a rectangular pulse of magnitude H and duration T, The response is:

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Figure 1.- Comparison between the mathematical model and experimental results for a step perturbation.

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After the substitution of the specific values:

Figure 2.- Comparison between the mathematical model and experimental results for a pulse perturbation.

Experiments were also performed using a proportional controller.

The students can observe the suitability of the mathematical model to predict the experimental results.

We will discuss the advantages and weaknesses of such remote experimentation that was carried out by a student in Mexico with a real laboratory in the USA.