MODELLING AND SIMULATIONS OF ELEVATOR DYNAMIC BEHAVIOUR

Electric drive elevators represent a special group of transport machines for vertical lifting of a load with stressed dynamic features. Special attention should be paid to the behaviour of these devices in exploitation, as early as in the projecting phase. The paper shows the process of forming adequate mechanical models for elevators grouped according to their features, and with this an analysis can be performed of the influence of certain parameters on their behaviour in operation. Based on the formed elevator models, simulations have been performed, and the obtained results are graphically shown through diagrams, with varying "dynamic" parameters (drive characteristics, velocity and acceleration, the height of lifting, rated load and the weight of the cabin, mechanical characteristics of the rope...) with the conclusions on their influence on elevator behaviour.Original Abstract: Dizala na elektricni pogon predstavljaju posebnu skupinu transportnih strojeva za vertikalno dizanje tereta s naglasenim dinamiciom znacajkama. Posebnu pozornost treba obratiti na ponasanje ovih uredaja u eksploataciji jos u ranoj fazi projektiranja. U clanku je prikazan proces formiranja odgovarajucih mehanickih modela za dizala grupirana prema njihovim znacajkama, a s time se moze obaviti analiza utjecaja pojedinih parametara na ponasanje u radu. Na temelju formiranih modela dizala, izvedene su simulacije, a dobiveni rezultati prikazani su graficki dijagramima, s razlicitim "dinamickim" parametrima (pogonske znacajke, brzina i ubrzanje, visina dizanja, ocijenjeno opterecenje i tezina kabine, mehanickcih svojstava uzeta...) sa zakljuccima o njihovom utjecaju na ponasanje dizala.