Research Progress of Overload Signal Characteristics and Processing Technologies of Penetrating Projectile

doi:10.12382/bgxb.2024.0027

Abstract

Abstract:

The overload signal of penetrating projectile is of vital importance to reflect the physical process of penetration, which further helps to reveal the mechanism of penetration resistance and the structural response of projectile. It is also an important basis for designing the projectile-fuze system and achieving the precise target strikes.The overload signal is divided into four components: rigid body deceleration, structural response of projectile, response of connection structure and interference signals of sensors. The sources and characteristics of the four components are introduced, and the modeling and evaluation methods for the vibration and sensor-related signals of projectile-fuze system are discussed. For analyzing the components of overload signals, the low pass filtering, mechanical filtering, modal decomposition, wavelet transform, and blind source separation methods are discussed respectively. The accuracies, adaptabilities, real-time performances, and applicabilities of the methods above are also compared. The real-time requirements for overload signal processing, the signal reconstruction methods, the form of rigid body deceleration in complex penetration environments and the challenges brought by high-speed penetration scenario are discussed. Based on the current research status of overload signals processing of penetrating projectiles, the existing problems and possible future research directions are summarized.

Key words: hard target penetration, overload signal, penetration overload, penetration-fuze system, projectile structural response

CLC Number:

TJ301
TJ302

CHEN Baihan, ZHAO Shengwei, ZOU Huihui, WANG Weiguang, DAI Xianghui, WANG Kehui. Research Progress of Overload Signal Characteristics and Processing Technologies of Penetrating Projectile[J]. Acta Armamentarii, 2024, 45(9): 2906-2928.

Figures/Tables 21

References 137

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信号峰值频率/Hz	模态特征频率/Hz	误差/%
6 400	6 573.3	2.6
12 740	13 394.7	4.9
14 130	14 612.7	3.3
17 380	17 246.0	0.8
19 000	18 977.8	0.1

信号峰值频率/Hz	模态特征频率/Hz	误差/%
6 400	6 573.3	2.6
12 740	13 394.7	4.9
14 130	14 612.7	3.3
17 380	17 246.0	0.8
19 000	18 977.8	0.1

连接结构	刚度	响应形式	响应幅值	适用场景
法兰连接	低	螺纹弹性振动、垫圈缓冲	小	侵彻计层、避免信号粘连
传统螺纹连接	中	螺纹弹性振动、碰撞	大	一般测试
压紧螺纹连接	高	螺纹弹性振动、小碰撞	小	完整过载记录、弹体结构响应分析

连接结构	刚度	响应形式	响应幅值	适用场景
法兰连接	低	螺纹弹性振动、垫圈缓冲	小	侵彻计层、避免信号粘连
传统螺纹连接	中	螺纹弹性振动、碰撞	大	一般测试
压紧螺纹连接	高	螺纹弹性振动、小碰撞	小	完整过载记录、弹体结构响应分析

过载信号成分	来源	波形	幅值	特征频率	时间积分值	时间二次积分值
刚体减速度	靶体阻力	峰-层对应	最大	低(深侵彻)-中等(多层侵彻)	侵彻速度	侵彻深度
弹体结构响应	弹体内部应力波	往复震荡	中等	中等(基频)-高(高频)	≈0	≈0
连接结构响应	测试装置连接处振动与碰撞	往复震荡	小	高(振动)-极高(碰撞)	≈0	≈0
传感器噪声	传感器内部干扰	往复震荡	小	高	≠0(含零漂)	≠0(含零漂)