基于虚拟仪器的叶尖定时采集系统的研究

发布时间：2018-06-11 16:43

本文选题：叶尖定时 + 虚拟仪器　；参考：《南京航空航天大学》2016年硕士论文

【摘要】：旋转机械是我国国民经济和国防事业当中有着广泛应用的机械设备,而作为其核心部件的旋转叶片的性能直接影响这个系统的安全性和稳定性。分析和监测叶片振动信号是一种维护叶片安全性能的有效方法。本文采用虚拟仪器技术搭建了基于叶尖定时原理(Blade Tip-timing)的叶尖定时采集系统对旋转叶片的振动性能参数进行采集以及分析并且进行了深入的研究。论文最后完成了相关的叶片振动性能测试实验,实验结果显示采集系统搭建正确。论文主要内容如下:(1)首先,介绍了旋转叶片的结构与受力分析,分析了叶片的分类和类型,叶片振动的固有频率以及叶片振动的坎贝尔图。从理论上了解了旋转叶片的振动特征,其次介绍了叶尖定时测振原理。然后介绍了本文所搭建的叶尖定时测振系统的构成,包括使用的叶尖定时传感器以及所用的高速数据采集卡等设备。(2)根据虚拟仪器的设计步骤来设计开发叶尖定时采集系统。首先对虚拟仪器需求分析进行了划分,其次依据需求分析进行系统框架设计、主界面设计及各功能模块设计;然后分开介绍各功能模块,最终形成具有良好的有着人机交互能力特点的虚拟仪器测试系统;其后根据测试用例对各设计模块进行测试,验证了各功能模块的编程正确性,达到了预期效果。(3)虚拟仪器叶尖定时采集系统应用于实验室现有的叶片转子实验台进行叶片性能测试实验,结果表明系统实现了预期目标,证明了该虚拟仪器的实用性和正确性。
[Abstract]:Rotating machinery is widely used in national economy and national defense in China. The performance of rotating blade, which is the core part of rotating machinery, directly affects the safety and stability of the system. Analysis and monitoring of blade vibration signal is an effective method to maintain blade safety performance. In this paper, a blade tip timing acquisition system based on blade tip timing principle (Blade Tip-timing) is built by using virtual instrument technology to collect and analyze the vibration performance parameters of rotating blades. Finally, the experiment of blade vibration performance is completed, and the experimental results show that the collection system is correct. The main contents of this paper are as follows: (1) firstly, the structure and force analysis of rotating blade are introduced, and the classification and type of blade, the natural frequency of blade vibration and Campbell diagram of blade vibration are analyzed. The vibration characteristics of rotating blades are theoretically understood, and the principle of tip timing vibration measurement is introduced. Then the paper introduces the structure of the blade tip timing vibration measuring system, including the blade tip timing sensor and the high speed data acquisition card, etc.) according to the design steps of the virtual instrument, the blade tip timing acquisition system is designed and developed. Firstly, the requirement analysis of virtual instrument is divided, then the system frame, the main interface and the functional modules are designed according to the requirement analysis, and then the functional modules are introduced separately. Finally, a virtual instrument test system with good human-computer interaction ability is formed. Then, according to the test cases, each design module is tested, and the programming correctness of each functional module is verified. The results show that the system has achieved the desired results. The results show that the system has achieved the desired goal, and has been applied to the blade performance test of the existing vane rotor test bench in the laboratory. The practicability and correctness of the virtual instrument are proved.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP274.2

【参考文献】

中国期刊全文数据库前10条

1 王维民;尚文;姚剑飞;崔津;;基于电涡流技术的叶尖间隙及定时测量研究[J];北京化工大学学报(自然科学版);2014年03期

2 胡伟;王磊;米江;;基于叶尖定时技术分析叶片非整阶次振动[J];航空科学技术;2011年06期

3 徐娜;时军波;吴晓峰;李福伟;李恩霞;臧启山;;烟气轮机叶片断裂原因分析[J];机械工程材料;2010年10期

4 闵小兵;夏光明;吴和元;孙金贵;叶锐曾;张涌;王国强;;YL-7000G烟机叶片失效原因分析[J];金属材料与冶金工程;2010年03期

5 欧阳涛;段发阶;闫明;李孟麟;钟志才;石小江;;双参数法辨识叶片同步振动的研究[J];传感器与微系统;2010年03期

6 李永明;;汽轮机叶片损坏事故及预防[J];中国新技术新产品;2009年07期

7 贾建伟;董建新;张麦仓;;烟气轮机转子叶片失效分析[J];失效分析与预防;2007年02期

8 王红;左华付;何训;林奇辉;胡祥松;;某航空发动机第三级涡轮叶片失效分析[J];失效分析与预防;2007年01期

9 胡安辉;马康民;;某型航空发动机压气机四级转子叶片振动特性分析[J];失效分析与预防;2006年04期

10 葛永庆;刘江;安连锁;;汽轮机叶片振动非接触测量技术综述[J];华北电力大学学报;2006年03期