| 用于模拟声发射信号的PZT柱状相位调制器设计 |
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| 引用本文： | 何存富, 杭利军, 吴斌. 用于模拟声发射信号的PZT柱状相位调制器设计[J]. 北京工业大学学报, 2006, 32(8): 683-687. |
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| 作者姓名： | 何存富 杭利军 吴斌 |
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| 作者单位： | 1.北京工业大学 机械工程与应用电子技术学院, 北京 100022 |
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| 基金项目： | 国家自然科学基金资助项目（10572009,10272007）. |
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| 摘 要： | 为了便于在实验室进行管道泄漏实验,通过PZT柱状相位调制器的逆压电效应模拟泄漏声发射信号,结合压电方程和机电等效原理推导了PZT柱状相位调制器的传递函数,并设计了PZT柱状相位调制器,同时进行了数值模拟.结果表明,设计的相位调制器可有效模拟低于25kHz的泄漏声发射信号.
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| 关 键 词： | 相位调制器 声发射 数值模拟 |
| 文章编号： | 0254-0037(2006)08-0683-05 |
| 收稿时间： | 2006-01-09 |
| 修稿时间： | 2006-01-09 |
Design of PZT Cylindrical Phase Modulator for Simulating Acoustic Emission Signals |
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| HE Cun-fu, HANG Li-jun, WU Bin. Design of PZT Cylindrical Phase Modulator for Simulating Acoustic Emission Signals[J]. Journal of Beijing University of Technology, 2006, 32(8): 683-687. |
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| Authors: | HE Cun-fu HANG Li-jun WU Bin |
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| Affiliation: | 1.College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | For the convenience of conducting pipeline leak experiment in laboratory,leak acoustic signals were simulated by converse piezoelectric effect of a PZT cylindrical phase modulator.In this paper,we combined the piezoelectric equations and electromechanical equivalence principle to deliver the transfer function of the PZT cylindrical phase modulator.A PZT cylindrical phase modulator was designed,and numerical simulation was conducted.It is proved that the PZT cylindrical phase modulator can simulate effectively leak acoustic e- mission signals when the frequency is lower than 25 kHz. |
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| Keywords: | phase modulator acoustic emission numerical simulation |
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