Parameter Drift Analysis of Fuze Secondary Power Supply Circuit Under High Overload
In high overload environments,the fuze cannot use physical and chemical power sources,and a backup secondary power supply is required.The existing research mainly focused on the failure analysis of the component structure,and this paper mainly studied the influence of parameter drift on performance of the secondary power supply in a high overload environment.Firstly,the drift of capacitance values in the environments of 110 000 g,125 000 g,140 000 g,160 000 g,and 180 000 g was analyzed by Hopkin-son pressure bar experiment.Then,the reliability of the simulation model was verified by comparing it with the simulation results.The drift of the output current and voltage of the secondary power supply in the penetrating environment was analyzed by simulation.The results show that the penetration peak over-load is 45 133 g,and when the overload lasts for 480 μs,the output voltage drifts by 0.14%for 190 μs,and the current drifts by 0.13%for 790 μs.The penetration peak overload is 99 103 g,and when the overload lasts for 280 μs,the output voltage drifts by 1.34%for 140 μs and the current drifts by 6.71%for 170 μs.The analysis shows that the same peak overload causes the output current to drift more than the voltage during the penetration process,and the longer the high overload lasts,the longer the output current and voltage of the secondary power supply drift.
secondary power supplymulti layer ceramic capacitorhopkins pressure barimpact overload
万方数据
维普
