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基于labview的叶片弯扭耦合测量软件系统设计.doc
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基于labview的叶片弯扭耦合测量软件系统设计.doc
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摘 要
随着科技的进步,现代风机叶片正向着超大型化、轻质化、高性能化方向发
展,虽然这些趋势大大促进了风机的现代化发展,带来了巨大的经济效益,但是
在这种背景下叶片的性能成为制约风机进一步发展的瓶颈。简单的说就是现代化
的大功率、高容量的风电机组必然要求高性能的风轮叶片,经过查阅资料和请教
指导老师后得知,气弹剪裁是现在通用的获得高性能叶片的有效方法,而弯扭耦
合则是实现气弹剪裁的一种有力途径,本文在这种背景下提出了一种基于
labview 的叶片弯扭耦合测量软件的设计与实现方法。
本文利用 labview 图形化编程的优点,通过 labview 软件相应的控件来模拟
仿真弯扭耦合中的各种参数,可以形象直观的展现一款可以实际应用的软件,通
过外置数据库,可以实际采集运行,达到仿真的目的。本文主要通过研究弯扭耦
合的控制参数,结合数学建模理论,建立了弯扭耦合的理论估算公式,并把这些
抽象的公式通过 labview 图形化编程编程可以用鼠标操作的控件,大大方便了相
关用户,并根据实际需要对现有的 750KW 叶片主梁重新进行弯扭耦合设计,通过
对比和查阅材料参数得知,利用碳纤维取代玻纤单向布对主梁的重新设计,将大
大提高叶片的整体性能,从而间接加强叶片弯扭耦合的强度,为叶片弯扭耦合的
测量提供了方便。
本文在基于 labview 的叶片弯扭耦合测量软件系统设计完成后,输入参数,
在 labview 环境下对其经行系统测试,测试结果表明,本软件运行稳定,测试速
度快,精度高,值得实际推广。
关键词:Labview;风机叶片;弯扭耦合;测量系统;软件设计
Based on the labview coupling
measurement software system design of
blade bending and twisting
Abstract
With the progress of science and technology, modern fan blades is toward an
oversized, and high-performance direction, although the trend has greatly promoted
the modernization development of the fan, brought huge economic benefits, but under
the background of this blade performance become the bottleneck of further
development of fan. Simply means modernization of high power and high capacity of
wind turbines for high-performance rotor blade, after check data and consult guidance
teacher, gas spring clipping is an effective method of high-performance blade now
universal, and crankle coupling is implemented cutting gas play a powerful way, in
this paper, under the background of this proposed a blade crankle coupling
measurement based on labview software design and implementation method.
In this paper, the advantages of using labview graphical programming,
corresponding control by labview software to simulate the various parameters of the
simulation crankle coupling, the image can be intuitive to show a practical software,
through the external database, can run the actual collection, achieve the goal of the
simulation. In this paper, by studying the crankle coupling control parameters,
combined with the mathematical modeling theory, the formulas for the estimation of
the crankle coupling is established, and put these abstract formula through labview
graphical programming programming can use the mouse operation control, greatly
facilitate the relevant user, and according to the actual needs of the existing 750 kw
blade crankle coupling design of main girder, through comparison and reference
material parameters, using carbon fiber to replace glass fiber unidirection redesign of
main girder, will greatly improve the overall performance of the blades, and indirectly,
to strengthen the strength of the coupling of blade bending and twisting, convenience
is provided for the coupling of the measurement of blade bending and twisting.
Crankle coupling in this paper, based on the labview blade measurement
software system design is completed, the input parameters, under the labview
environment to test the line system, the test results show that the software runs stably,
test speed, high precision and is worth popularizing actual.
Key words: Labview; Fan blades; Crankle coupling; Measurement system; The
software design
目 录
摘 要...............................................................................................................................I
Abstract..........................................................................................................................II
1 绪 论...........................................................................................................................I
1.1 国内外的研究现状..........................................................................................1
1.2 课题的来源与研究意义分析..........................................................................2
1.3 本文所做的主要工作......................................................................................3
1.4 论文的结构安排..............................................................................................3
2 叶片弯扭耦合的设计理论分析................................................................................5
2.1 叶片弯扭耦合设计效应..................................................................................5
2.1.1 叶片的卸载效应....................................................................................5
2.1.2 稳定功率输出........................................................................................6
2.2 叶片材料与耦合关系 ....................................................................................7
2.2.1 复合材料叶片........................................................................................7
2.2.2 合材料层合板叠层理论........................................................................8
2.3 实例验证..........................................................................................................9
2.4 叶片中的铺层与耦合效应............................................................................11
2.4.1 耦合控制系数......................................................................................11
2.4.2 叶片网格的划分..................................................................................14
2.5 本章小结........................................................................................................14
3 利用 labview 设计叶片弯扭耦合测量系统 ...........................................................15
3.1 labview 简介 ...................................................................................................15
3.2 把 labview 应用于叶片弯扭耦合测量上的优势分析 .................................19
3.3 把 labview 应用于叶片弯扭耦合测量上的难点分析 .................................20
3.4 本章小结........................................................................................................20
4 叶片弯扭耦合测量的原理以及 labview 实现 .......................................................22
4.1 叶片弯扭耦合测量的原理分析....................................................................22
4.1.1 国内外在叶片弯扭耦合测量领域采用的方法..................................22
4.1.2 本文改进后的测量方法......................................................................22
4.2 叶片弯扭耦合测量的 labview 实现 .............................................................22
4.2.1 叶片弯扭耦合测量的模块设计..........................................................22
4.2.2 叶片弯扭耦合测量的 labview 仿真实现 ...........................................24
4.2.3 叶片弯扭耦合测量系统的性能测试..................................................25
4.3 叶片弯扭参考耦合测量系统的运行结果展示............................................26
4.4 本章小结........................................................................................................29
5 总结与展望..............................................................................................................30
5.1 主要结论........................................................................................................30
5.2 研究展望........................................................................................................30
参考文献......................................................................................................................32
致 谢............................................................................................................................34
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