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EN
The control of sequential triggering of thyristors used for a quasi-optimal distribution of energy in a linear accelerator was presented in the paper. Issues related to pulsed energy distribution with high current values are dis-cussed. An important part of the work is discussion of the applied solution and verification of the effectiveness of the applied system in relation to traditional systems.
EN
The most popular constructions of the power supply systems for electrodynamic accelerators (railguns) have been compared and presented in the paper. The construction of the system for the supply depends mostly on application of the railgun. The main part of the paper concerns the systems of high energy and high peak current intensity. An example of the original power source has been presented as well.
3
Content available remote Transient analysis of a railgun with iron core
EN
A calculation and measurement results of transients for an iron-core electrodynamic launcher have been presented in the paper. The magnetostatic field calculations have been made with using the Maxwell-ANSYS software, while the circuit part of the mathematical model has been implemented in MATLAB/Simulink package. The measurement verification has been carried out with using the original laboratory stand. The transients of excitation current, capacitor voltage and projectile velocity have been compared. A good conformity between calculation and measurement results has been obtained.
PL
W pracy przedstawiono wyniki obliczeń i pomiarów sygnałów zmiennych w czasie dla wyrzutni elektrodynamicznej z rdzeniem ferromagnetycznym. Do obliczeń pola magnetostatycznego wykorzystano program Maxwell-ANSYS, natomiast część obwodową modelu matematycznego zaimplementowano w pakiecie MATLAB/Simulink. Porównano ze sobą przebiegi prądu wzbudzenia, napięcia na kondensatorach oraz prędkości wylotowej elementu ruchomego (pocisku). W obliczeniach dodatkowo wyznaczono siłę działającą na pocisk oraz jego przyspieszenie.
EN
The calculation and measurement results of transients for an electrodynamic accelerator with permanent magnet support have been presented in this paper. The calculations have been made using the magnetostatic model in the Maxwell software, as well as using a Matlab/Simulink transient model. The waves of mechanical parameters (projectile velocity and acceleration, force) and electric ones (excitation current and capacitor voltage) have been analyzed for different supply conditions (voltage value, capacitance). The efficiency and projectile energy have been studied as well. The mathematical models have been verified experimentally using the original laboratory stand. A good conformity between calculation and measurement results has been obtained.
EN
Some modifications of the electrodynamic accelerator supply circuit have been made. Due to the modifications, the inductance and resistance of the circuit changed significantly. Thus, a current and voltage waves, as well as the velocity of the movable part have changed. A comparison of the measured electrical and mechanical signals for two different circuit configurations has been presented.
6
Content available remote Calculation models of the electrodynamic accelerator (railgun)
EN
The analysis of phenomena occurring in the railway accelerator (railgun) has been presented in the paper. The analytical and numerical models have been used. The formulas describing the forces acting on the accelerated element (bullet) for different models of the accelerator have been derived. The dimensions of rails and bullet for each model have been assumed to be the same. In case of numerical calculations the finite element method has been used. For a chosen accelerator type the field-circuit model has been made with using MATLAB-Simulink software. The selected model has been verified experimentally.
PL
W artykule przedstawiono analizę zjawisk zachodzących w akceleratorze szynowym. Wykorzystano zarówno modele analityczne, jak i numeryczne. Otrzymano wzory opisujące siły działające na element przyspieszany (pocisk) dla różnych modeli akceleratora. Przyjęto identyczne wymiary szyn i pocisku dla każdego modelu. W przypadku obliczeń numerycznych wykorzystano metodę elementów skończonych. Dla wybranego typu akceleratora wykonano model polowo-obwodowy z wykorzystaniem oprogramowania MATLAB-Simulink. Model ten został zweryfikowany pomiarowo.
PL
W artykule przedstawiono wyniki obliczeń numerycznych dla 3 modeli (typów) akceleratorów szynowych. Wymiary szyn i elementu ruchomego zostały w poszczególnych modelach zachowane. W obliczeniach wykorzystano metodę elementów skończonych. Dla wybranego typu akceleratora wykonano model polowo-obwodowy w programie Matlab-Simulink, który zweryfikowano pomiarowo.
EN
The numerical calculation results for 3 models (types) ofrailgun accelerators have been presented in the paper. The dimensions of rails i and bullet for each model have been assumed to be the same. The finite element method has been used in the calculations. For a chosen accelerator type the field-circuit model has been made with using Matlab-Simulink software. The model has been verified experimentally.
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