In recent years,parameters real-time identification based on dominant parameters selection has become a promising way to improve efficiency of composite load identification.

Principal and difficulties in designing ZDlllS pulsating current traction motor are described,together with explanation of determination of major parameters as well as construction characteristics.

Main parameter of effect to vibrating digger soil separation ability;

Based on the comprehensive analysis and studies to main types of domestic and foreign equipments, it makes a design to the main parameters of this new - type coal slurry centrifugal dehydrator.

Then, the simulation model was employed to study the effect of main parameters of hydro-pneumatic spring on suspension system performances, which could help to design the main parameters properly.