The Analysis And Study Of The Incremental Harmonic Balance Method Of Electromagnetism Damper

It is known to all that almost all the electrical transmission lines in the world face with effect and menace from Wind-induced vibration; hence the Wind-induced vibration to electrical transmission lines is all along an emphasized topic for the researchers of different countries. Because it is an extremely complicated and strong stochastic research topic, it doesn't entirely resolve despite of much research work, which has been done for the last seventy years. Furthermore, many new problems continue arising from the reality.Looking from the statistical data, in all way of wire vibration aeolian is especially the most common, frequent one and can sustain the longest, so it is the commonest vibration type to endanger the normal function of electrical transmission lines. The phenomenon of aeolian vibration has drawn great attention of professionals in this field.Mechanical damper is a staple damping equipment today, and it has made good damping impact in the past tens of years. But in some special working conditions of some wind vibration, the existing damping equipment can not prevent the aeolian vibration of wire effectively. To solve the problem, professo Fan She-xin advance the design of electromagnetism damper. In theory, the effect of this kind of damper is superior over mechanical damper.This article is from the aeolian vibration and antivibration of the basic theory, and proceeds on the work of mechanical damper and electromagnetism damper respectively. By comparison, this article points out the limitations of the mechanical damper and the reason that electromagnetism damper is superior over mechanical damper, then establishes the mathematical of electromagnetism damper, including the vibration model and circuit model, finally solves the mathematical model with the incremental harmonic balance method. The result from secretly scheming against is not bad be informed that the ultimate unbalanced force tends to a constant value , being that harmonic item number takes is more rational , calculating result is credible when explanation main body of a book finds the solution in being in progress.The studying of Electromagnetism damper in this article is only established in pilot study. As a new equipment of the hard technology, it has more things to do before the Electromagnetism damper is applied to practice.