现代防御技术 ›› 2023, Vol. 51 ›› Issue (2): 14-22.DOI: 10.3969/j.issn.1009-086x.2023.02.002

• 飞行器技术 • 上一篇    下一篇

柔性电缆PCB内电层载流量研究与实验验证

陈雨田1, 陈彧欣2, 张海礁1, 董淑英2, 徐璐1, 王宇晶1, 邱越1   

  1. 1.北京新风航天装备有限公司,北京 100854
    2.北京电子工程总体研究所,北京 100854
  • 收稿日期:2022-06-22 修回日期:2022-09-21 出版日期:2023-04-28 发布日期:2023-05-05
  • 作者简介:陈雨田(1988-),男,湖北京山人。工程师,硕士,研究方向为微小型飞行器无缆化、电装工艺。

Research and Experimental Verification of Current-Carrying Capacity of Electrical Layer in Flexible PCB Cable

Yutian CHEN1, Yuxin CHEN2, Haijiao ZHANG1, Shuying DONG2, Lu XU1, Yujing WANG1, Yue QIU1   

  1. 1.Beijing Inn wind Aerospace Equipment Co. , Ltd. , Beijing 100854, China
    2.Beijing Institute of Electronics System Engineering, Beijing 100854, China
  • Received:2022-06-22 Revised:2022-09-21 Online:2023-04-28 Published:2023-05-05

摘要:

对某微小型飞行器内部柔性电缆PCB的稳态载流能力和冲击电流载流能力进行了理论计算和设计。通过MIL-STD-275标准和经验公式,对柔性电缆PCB的稳态载流能力进行了复核复算;通过对照GJB 4057—2000,估算出柔性电缆PCB的冲击电流载流能力。对于理论计算和估算值,设计了2倍理论值状态下的稳态载流测试和10倍理论值状态下的脉冲电流测试实验,实验结果与预期一致,验证了设计理论计算的正确性。在载流实验中,获取柔性PCB板在各个电流值载流状态下的温度情况,并通过Flotherm 软件进行热仿真验证,模拟了PCB在各个电流值状态下的稳定温度,热仿真结果与实际测试结果相吻合,验证了实验数据的真实性与合理性。该载流量实验与仿真数据结果可为后续短时工作微小型飞行器内部PCB设计提供实验数据支撑。

关键词: 微小型飞行器, 印制电路板, 载流量, 冲击电流, 载流测试, 实验数据, 热仿真

Abstract:

In this paper, the steady-state current-carrying capacity and impact current-carrying capacity of the flexible PCB cable inside a micro aircraft are calculated and designed theoretically. By the MIL-STD-275 standard and empirical formula, the steady-state current-carrying capacity of the flexible PCB cable is reviewed and calculated. With reference to GJB 4057-2000, the impact current-carrying capacity of the flexible PCB cable is estimated. For the theoretical calculation and estimation, the steady-state current-carrying test under the condition of twice the theoretical value and the pulse current test under the condition of 10 times the theoretical value are designed. The test results are consistent with the expected ones, which verifies the correctness of the theoretical calculation. In the current-carrying capacity test, the temperature of the flexible PCB under the current-carrying state of each current value is obtained, and the thermal simulation is carried out by Flotherm software for verification. The stable temperature of the flexible PCB under each current value state is simulated. The thermal simulation results conform to the actual test results, which verifies the authenticity and rationality of the experimental data. The results of the current-carrying capacity experiment and simulation data in this paper can provide experimental data support for the design of PCB in micro aircraft for subsequent short-time operation.

Key words: micro aircraft, printed circuit board(PCB), current carrying capacity, impact current, current-carrying test, experiment and simulation data, thermal simulation

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