Laboratory of Applied Informatics

LoAI

Electric Controlled Power Supply Model

The model of the electric controlled power supply was made for the opening of the classroom by Ing. Jiří Bumba (teacher at COP) in 2011. The model represents not only the processes in electrical circuits (charging and discharging capacitors in electrical power supplies), but also, for example, the filling of water tanks, filling air vents, cooling in refrigerators, etc. The model is connected to the computer via a multifunctional input/output card allowing reading of outputs and setting of inputs. The resources of the school were used to implement this teaching aid. The cost of the components was 1 500 CZK. The implementation took 40 hours.

Interface inputs and outputs

Inputs: voltage u₁ [V], switches (manual and electronic) of loads R_z1 to R_z4 [Ω]
Outputs: voltage u₂ [V], load current i_z [A]

The model also allows to electronically change its parameters (R [Ω], C [F]).

Figure 2: Model of an electric controlled power supply - schematic drawing taken from [1] (png, eps, zmf)

Used for teaching:

SS: verification of electrical laws (Ohm's, Kirchhoff's)
SS: measuring the static transmission characteristics of a sensor
SS, TTS: modelling of electrical systems and their simulation
TTS: modelling and identification of dynamic systems
TTS: design of output voltage control by PID controller
TTS: estimation of unmeasurable quantities using Kalman filter

Links

[1] Roubal, J. Teaching materials for the Applied Informatics Laboratory at VOŠ, (Bachelor thesis), ČVUT v Praze, MUVS, Praha, 2012.

[2] MOODLE VOŠ [online], ⟨https://moodleVOS.copsu.cz/⟩.

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