Control of embedded system via internet

The paper presents a complete multimedia educational program of DC servo drive for distant learning. The program contains three parts: animation, simulation and internet-based measurement. The animation program gives the operation of DC motors as well as its time- and frequency-domain equations, transfer functions and the theoretical background necessary to design a controller for DC servo motors. The simulation model of the DC servo motor and the controller can be designed by the students based on the animation program. The students can also test their controllers by the internet based measurement, which is the most important part from engineering point of view. The exercises the students can do are programming the D/A and A/D cards of the embedded system and to design different types of controllers. First, a simple PI controller can be designed, but advanced students can also design more sophisticated controllers such as the sliding mode controller. After the measurement is executed, the students can download the measured data and compare them to the simulation results.