structure modeling

Researching of the Dynamic of Hoist Dragline Excavator ЕШ-15/90а Drive

This article surveys an analysis of dynamic processes of hoist of the excavator-dragline type ЕШ-15/90 using computer simulation, considering the effect of sagging of the rope. A comparison of the accuracy of the obtained computer models with and without the nonlinearity of its elasticity coefficient is considered. Structural models with the use the libraries of MATLAB + Simulink mathematical program are proposed to solve this problem.

The Impact Analysis of the Type Excitation System of Offline Synchronous Generator on His Transient Response

This article surveys the analysis of the typical IEEE excitation systems of synchronous generators. For analyze the power system stability with these excitations suggest use the theory of automatic control. For solving this problem proposed simplification using structural models.