矿井提升系统有恒定负载自持振荡的研究

在用于矿井提升的发电机－电动机系统中，存在着由于发电机励磁饱和非线性变化引进的自持振荡；这种自振现象必然控制在允许范围内，否则将留下安全隐患。本文论述了有给定，有恒定负载情况下的自持振荡，得出了其振幅值给定和负载的增大而减小的结论，最后给其达到恰好克服静摩擦力的最佳状态。

Research on Constant Load Self-sustained Oscillation of Hoisting Power System in Mine Shaft

In the generator-motor system for hoisting in mine shaft exists a self-sustained oscillation caused by nonlinearity of excitation saturation of generator.This self-sustained oscillation must be controlled within a permissible range,otherwise it will leave hidden troubles for safety.This paper discussed the self-sustained oscillation with a given constant load and concluded that the value of the oscillation will reduce with the increase of given load,thus it can be made up to the optimum status just for overcoming static friction.