| 基于解调技术的喷泵空化特征提取方法研究 |
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| 引用本文： | 苏永生,王永生,杨哲辉.基于解调技术的喷泵空化特征提取方法研究[J].武汉水运工程学院学报,2013(6):1180-1183. |
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| 作者姓名： | 苏永生 王永生 杨哲辉 |
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| 作者单位： | [1]海军工程大学动力工程学院,武汉430033 [2]中国人民解放军91251部队,上海200940 |
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| 基金项目： | 国家自然科学基金项目（批准号：51009144）、海军工程大学自然科学青年基金项目（批准号：HGDQNJJll014）资助 |
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| 摘 要： | 通过对喷水推进泵实船空化测量，捕捉了喷水推进泵在不同工况下的进口水声信号和壳体振动信号，对其空化调制特征进行了研究。结果表明：①喷水推进泵的空化受其叶频及其倍叶频调制；②随着空化强度的增加，喷水推进泵的调制特征量的变化与声压规律曲线一致，即满足先上升后下降的趋势。据此，可以利用调制特征对喷水推进泵的空化进行实时监测。
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| 关 键 词： | 喷水推进泵 空化 调制特征 声压规律曲线 |
A Study on Cavitation Feature Extraction Method in Waterjet Based on Demodulation Technique |
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| Authors: | SU Yongsheng WANG Yongsheng YANG Zhehui |
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| Institution: | 1.College of Marine Power Engineering ,Naval University of Engineering , Wuhan 430033 ,China;2.The 91251 Army of People＇s Republic of China ,Shanghai 200940,China) |
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| Abstract: | The waterjet cavitation of a real ship is measured. At the different operation condition, the inlet of waterjet pump acoustic signals and vibration signals are obtained, also the cavitation modulation characteristic of waterjet is studied. The results of study are show that：①the waterjet cavitation is modulated by its blade frequency and double blade frequency; ②as the cavitation strength increasing，the modulation characteristic of waterjet is followed uniformity by sound pressure rule curve which is first rising and second dropping. On these grounds, the real time monitoring cavitation of waterjet can be carried through by modulation characteristic. |
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| Keywords: | waterjet cavitation modulation characteristic sound pressure curve |
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