西门子公司电流自适应系统稳定性分析

Stability Analysis of Current Adaptive System of Simens Product

通过采用线性控制系统的稳定性理论来分析西门子公司80kw直流电动机控制系统的电流自适应控制环节，经过简化变换系统的动态结构图，以及采集西门子公司原图中的有关原始数据，经过计算整理得出了闭环系统的特征方程；应用四阶线性控制系统的劳斯胡尔维茨代数稳定判据分别对电流连续与断续的情况进行了分析，证明了控制系统是稳定的，并指出了在实际应用中提高该系统稳定性的具体方法.

The current adaptive control section of control system of Simens 80KW direct current motor is analynd with stability theory of linear control system. By simplifying the dynamic structure circuit and sampling the related data in the origlnal circuit,the characteristic equation of the closed-loop system is calculated. The algebra criterion for stability discrimination of four degrees of linear control system is applied to analyse the cases of continuous and diseontinuous current,proving the stability of the system. Some concrete methods to promote the stability of the system in practice are presented.