Online generator for plant responses of first and second order system by using AJAX and PHP

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Application is customising the theory of process control to student and technical community via internet. Application is using script language XHTML and cascade styles (CSS) and programming languages PHP, JavaScript and AJAX technology.

This online generator was my school project two years ago. Application is generating plant responses of first and second order system by using AJAX technology. Application is customising the theory of process control to student and technical community via internet. Application is using script language XHTML and cascade styles (CSS) and programming languages PHP, JavaScript and AJAX technology.

User of the application is allowed to enter own values of gain, time constant, time of simulation, damping coefficient and time delay. During the data entering, AJAX technology is used to inform the user about the validity of input. The application allows user to choose between first and second order system. In case the input data are wrong, although user was informed about it, the application will draw image with warning, that input data were wrong. Selection of second order system and setting up a range of damping coefficient change will draw a slider. By changing the slider position, new plant response is dynamically generated by AJAX technology. The whole application is producing quick overview of the set plant response.

You can try live application here. I am also offering source code for a free download. Just keep credits inside of the code intact. I removed comments from the code (some programmers even don't like comments and they were in slovak language anyway), but if someone would like to see commented code, just contact me.

Application was tested in Firefox 5, Opera 11, Chrome 12

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