侵彻加速度存储测试系统的研究及其信号处理与分析

【作者】 李东红；

【导师】 祖静； 范锦彪；

【作者基本信息】 华北工学院 ， 测试计量技术及仪器， 2004， 硕士

【摘要】 本文主要讨论了可用于硬目标侵彻试验的高冲击加速度存储测试系统的设计及数据处理分析方法。对侵彻测试研究的必要性和主要的研究方法及侵彻存储测试的国内外现状作了较为全面的介绍，详细讨论了如存储测试系统的电荷放大器、模拟滤波器的设计；电路主控制器HB0201的使用；电路设计的抗干扰原则；缓冲模块的选择及灌封技术的使用等。对于侵彻测试用的加速度传感器的原理以及加速度传感器动态性能的指标和校准方法作了一定的介绍并通过相对校准法对实际使用的传感器进行了校准。利用侵彻模拟试验装置——空气炮对存储测试电路的缓冲模块进行了性能考核，此外还对空气炮模拟试验中使用弹丸的速度作出了估算并分析了空气炮模拟试验数据。文中还介绍了利用数学工具软件Matlab下的Sptool工具箱设计有限冲激响应滤波器的方法，并使用Kaiser窗滤波器对实测数据进行了滤波处理。作为侵彻测试工作的重要内容，文中还对弹丸侵彻混凝土的实测数据进行了处理和分析。此外在数据分析上引入了小波分析方法，介绍了小波分析的应用，从概念上比较了小波分析和傅立叶变换的异同并对实测数据作出了小波分析。此外，本论文还对目前工作中存在的问题加以了总结并介绍了今后研究的方向。更多还原

【Abstract】 This paper mainly talks about the design of memory testing system for hard target penetration experiment. The essence of penetration testing, method is introduced in detail. In memory testing system part, the design of charge meter, low analogue filter, the use of circuit mainly controller-HB0201, the means of anti-interference in circuit are provided. The principle of accelerometer which used for penetration testing, and its dynamic performance are analyzed. By relative calibration method, the accelerometers used are calibrated.The performance of penetration testing system is checked by air-cannon used for penetration simulation. In addition, the scheme of air-cannon structure is introduced and the velocity of bullet used in penetration simulation experiment is calculated. At mean time, the signal sampled from experiment is analyzed in some extent.The method of designing FIR filter with software-Matlab is illustrated in this paper. The testing signal is filtered by Kaiser-window filter. The result is satisfactory. As an important port of penetration testing work, the data measured in process of projectile penetrating concrete target is analyzed. In signal processing, the wavelet analytical method is used. The application of wavelet is introduced. The comparison with Fourier is explained. By wavelet method, the signal is analyzed effectively.In addition, the questions faced in current work and advanced research direction are pointed out in this paper.更多还原