W artykule przedstawiono zasadę działania, projekt i sposób obliczania elementów zasilacza do układów krzemowych fotopowielaczy (SiPM). Zasilacz jest skompensowany termicznie i wyposażony w analogowe wejście do regulacji napięcia wyjściowego. Podano i omówiono wyniki testów zbudowanego egzemplarza.
EN
This article presents the design, principle of operation and the method of calculating component values of power supply designed for silicon photomultipliers (SiPM). The power supply is thermally compensated and equipped with an analog input to regulate the output voltage. The results of the tests of the constructed prototype are presented and discussed.
The article presents constructional, technological and operational issues associated with the compensation of thermal deformations of ball screw drives. Further, it demonstrates the analysis of a new sensorless compensation method relying on coordinated computation of data fed directly from the drive and the control system in combination with the information pertaining to the operational history of the servo drive, retrieved with the use of an artificial neural networks (ANN) -based learning system. Preliminary ANN -based models, developed to simulate energy dissipation resulting from the friction in the screw-cap assembly and convection of heat are expounded upon, as are the processes of data selection and ANN learning. In conclusion, the article presents the results of simulation studies and preliminary experimental evidence confirming the applicability of the proposed method, efficiently compensating for the thermal elongation of the ball screw in machine tool drives.
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