矿井提升机系统无给定自持振荡分析

AN ANALYSIS OF NON-PRESETSELF-SUSTAINED OSCILLATION OF MINE HOIST SYSTEM

本文采用波波夫所提出的研究非线性自动控制系统的近似法￣（１），对发电机一电动机矿井提升机系统（简称Ｆ－Ｄ系统）由于发电机励磁饱和非线性所引起的自持振荡进行了分析。此法考虑了系统环节的非线性、系统的高阶性，以及系统输入与输出功率的有限性，因此此法更逼近实际工程系统。应用此法，系统需具有高频阻断性能。文章最后列举了计算实例并对其进行了分析计算。

Given by,the approrimate method which is used in the studyon the nonlinear automatic control system is adopted to analvze the self-sustained oscilla-tion of mine hoist system F-D,caused by the exciting saturation nonlinearity of genera-tor,The nonlinearity of system link,the high-order characteristic of system,and the inputand output power iimitation of system have been considered in this method.Thereforo,theapproximate method very approaches to the practical engineering system。When usingthismethod,the system must be of the high-frequency performance,In the last part of this pa-per,the calculalion examples are given and analyzed.