【作者】 杨立秋；

【导师】 樊社新；

【作者基本信息】 广西大学 ， 机械设计及理论， 2008， 硕士

【摘要】 微风振动是架空输电线路主要的风振危害之一,对输电工程的安全造成严重威胁,所以越来越引起广大专业技术工作者的重视。本文首先介绍了当今国内外对微风振动及防振相关理论研究的大概状况。其次,阐述了输电导线微风振动的基本理论,包括产生微风振动的起因,特点及影响因素,并简要地推导出输电线在微风振动下的振动波形方程。然后,简单介绍了微风振动防振措施和常用的防振装置及其缺陷,进而提出电磁防振思想。本文的核心内容是建立了电磁式防振锤振动系统的数学模型。其中,特别应用了一般力学原理中的哈密顿原理,建立了电磁式防振锤锤头的真实运动模型。而且,应用了谐波平衡法求得了主要设计参数的近似表达式,讨论并应用了分频谐波法对非线性数学模型的解进行了修正。最后,得出结论并展望一下未来的研究工作。本文主要对电磁式防振锤的工作原理进行了理论性分析,并对非线性模型的分析方法进行了试探性研究。阐述和推导出了一些重要参数的关系式和主要设计参数的表达式,为以后的参数设计和优化等进一步研究工作做好理论基础。更多还原

【Abstract】 The breeze vibrations on over-head transmission line was one of the major harmfulness about the vibration on transmission line, which threat the safety of the transmission line seriously, and more and more professional and technical workers began to study on it.At first, this paper introduced some studies of the current domestic and international situation about the theory of breeze vibration and anti-vibration. Secondly, described the basic theory of breeze vibration on the transmission line, including the reasons, characteristics and impact factors of the breeze vibration. Furthermore, briefly derived the wave equation of vibration. Then, some anti-vibration measures and devices was introduced briefly, and raise a thinking of electromagnetic anti-vibration.The main content of this paper is to established the mathematical model of the vibration system. Especially, the electromagnetic damper-head’s model of the real movement was established, by applying the Hamilton principle in the general theory of mechanics. Moreover, achieved the main design parameters similar expressions by applying the harmonic method, and raised a part-frequency harmonics method on the basis of the frequency harmonics method, and applied the method on the non-linear mathematical model for the quantitative analysis. Finally, draw conclusions and the future prospects of the research work.In this paper, the main work was based on the working principle of the electromagnetic damper’s theoretical study, and made a exploratory research on the non-linear model analysis. Derived on some important parameters’ relationship equation and the main expression equation of the design parameters. All of these made the theoretical basis to the further research work, such as the parameters of the design and optimization.更多还原