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http://dx.doi.org/10.12673/jant.2021.25.5.370

Wiring Test Method of Projectile using Z-Segmentation Algorithm  

Oh, Se-Kwon (L-SAM PMO, LIG Nex1 Co.,Ltd.)
Lee, Dae-Hyun (L-SAM PMO, LIG Nex1 Co.,Ltd.)
Kim, Yung-Sung (L-SAM PMO, LIG Nex1 Co.,Ltd.)
An, Jong-Heum (L-SAM PMO, LIG Nex1 Co.,Ltd.)
Abstract
development of the aerospace industry is increasing the research of projectiles. In addition, many tests are under way and many failures occur accordingly. Projectiles should be able to minimize failures because they are more dangerous than other electronic equipment. Therefore, it is necessary to verify wiring before powering the projectile. Accordingly, the wiring status was verified by resistance measurements. However, the wiring test of the previous resistance measurement method cannot be accurately measured due to devices such as capacitors and inductors in the projectile circuit. In this paper, impedance is measured in the connection state of cables and projectiles using a TDR meter. The Z-Segmentation algorithm is used to set the reference value for the measured steady state impedance. The Z-Segmentation algorithm first finds the peak values of the impedance waveform using a Kalman filter and obtains the final impedance peak segment through segmentation. In this way, the wiring status is determined based on the reference value for the normal state of the wiring.
Keywords
Projectiles; Line Test; TDR; Z-Segmentation; Impedance;
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