基于电爆炸冲击波的测试系统动态特性研究OA

To address the requirement for rapid verification of a test system's dynamic response capability in explosive scenarios,a method for evaluating the dynamic characteristics of test systems based on metal wire electro-explosive testing was proposed.An electro-explosive shock wave was employed as the excita-tion source,and pressure signals were synchronously collected from both the standard system and the sys-tem under test.Four key characteristic parameters,i.e.,overpressure peak,rise time,duration and impulse,were extracted for comparative analysis.Based on this methodology,a portable electro-explosive shock wave test system was developed.Repeatability tests of the electro-explosive shock wave demonstrate that the peak overpressure values are consistently around 20 kPa and the duration values around 1.2 ms across six trials,with a repeatability error less than 5%,which satisfies the requirements of field dynamic testing.Comparative tests reveal that the system under test exhibits an approximately 10%peak attenuation,indicating potential limitations in front-end signal conditioning or sensor sensitiv-ity.The rise time of the system under test shows a delay of approximately 10.6%,which suggests insuffi-cient dynamic response speed and bandwidth.The duration and impulse remain within the 10%error mar-gin,demonstrating good consistency with the standard system.This methodology provides an effective supplementary approach for the rapid assessment and usability verification of the dynamic characteristics of test systems in explosive environments,expanding the applicability of dynamic evaluation techniques.However,due to the shaping effect during pipeline propagation,the emphasis on relative performance evaluation,and the limitation in excitation energy scale,it is more suitable for rapid dynamic performance screening in the field rather than replacing high-precision laboratory calibration methods.