Robert Gębarowski
Czasopismo Techniczne, Nauki Podstawowe Zeszyt 3 NP (17) 2014, 2014, s. 51 - 57
https://doi.org/10.4467/2353737XCT.14.312.3400The paper shows Monte Carlo simulations of the Ising model on a square lattice with no external magnetic field. In particular, the uncertainty of the spin coupling interactions in the Ising model has been considered. The influence on the phase transition of the Gaussian noise in the spin coupling values has been demonstrated.
Robert Gębarowski
Czasopismo Techniczne, Elektrotechnika Zeszyt 2-E 2016, 2016, s. 121 - 134
https://doi.org/10.4467/2353737XCT.16.252.6051This article presents the implementation of the low-frequency measuring method of current and voltage RMS values as well as active and reactive power of a two-terminal network, which is supplied by a sinusoidal voltage of 50 Hz. The implementation was made on a typical compact PLC-FX3G Mitsubishi Electric controller. This controller has a relatively low computing power, and when control tasks and measurements are performed simultaneously, the measurement method must be simple in order to match the limited computing power of the controller. This article describes how to implement the low-frequency measuring method onto the controller. It also presents the laboratory set for testing the controller and application. The paper also presents the results of measurements and calculations, in particular the impact of measurement time delays on errors of the RMS voltage and current values as well as active and reactive power values.