现代电力传动系统反振荡适应控制的实现

Realization of the anti-oscillatory adaptive control for modern electric drive system

以变流器供电为特征的现代电力传动系统 ,经常会出现系统振动问题 ,严重时甚至不能正常运行 .由于系统内部存在的非线性耦合特性 ,这类振动问题从传动系统设计入手来解决是相当困难的 .现提出反振荡适应控制方法来实现振荡的抑制 ,即利用自适应辨识技术作为周期扰动分量的检测手段 ,通过有差的反馈控制以抑制系统的振荡幅值 ,使之限制在容许限度内 ,不至发生系统非线性振荡 .此法在井塔及提升机消振工程中得到了成功的应用 ,取得了很好的振动抑制效果 .

The problem of system vibration often occurring in the modern electric drive system with character of convertor powersupply, which sometimes causes not regular work, is quite difficult to solve by means of analyzing the drive system design because of the existence of nonlinear coupling characteristics in its inner system. Therefore, the theory of anti oscillatory adaptive control is proposed to reduce the vibration, which utilizes self adapting discriminative technology as a cycle monitoring method of disturbing component to reduce the vibration amplitude of controlling system within permissible limit so that no any nonlinear vibration occurred though feedback control with error. A very good restrained vibration effect is gained by using this technology which is successfully applied in reducing vibration project of shaft tower and hoisting machine.