load lifting machines

Within the scope of the Braude –Ter-Mkhitarov generalized model of the load calculation of the load lifting machines’ mechanisms, the dynamic mode optimization of their start up regimes based on the minimal power criteria is proved in the article. In order to define the basic kinematic characteristics of motion of the mentioned mechanisms during transitional processes (start up/braking) and types of the arising oscillations (periodical, a-periodical, dynamic chaos) the method of a classical phase portrait as well as phase portraits of high orders is used.

The fields of applications and values (processes) of external impacts (power and kinematic) are defined while developing dynamic models which adequately describe and specify calculation schemes of the analysis of loads arising in load lifting machines/cranes at their start up/braking. The numerical and analytical method of solving proper differential model equations is based on the analysis of the phase likeness of the systems movement (of both the classical and highest orders) is proposed.