Computational Dynamics of the Rotational Heavy Loads Mastered by Hydrostatical Driving Systems

This research deals with the transitory dynamics within the hydrostatical driving systems, for the case of rotational mechanical loads with the consistent moment of inertia. Optimal dynamic response of the mechanic and hydraulic coupled system is the main purpose of this study. Theoretical background provides elements both for the multi-body dynamics of mechanical parts, and for the hydraulic driving systems, with the common aspects in evaluation and control of the system response. Reducing the transitory phases, in the same time with diminishing of the primary power supply level, frame the goal of this study. The authors present a computational approach based on Matlab-SimScape© software implementations, which is able to provide both the analysis of different stages of load motion and actuating dynamics, and the evaluation of variable control techniques for driving system. Real data was used to verify the computer simulations. A comparative analysis of the results was provided and an errors evolution was estimated. The relevance of the model was underlined in case of simulations of different types and characteristics of rotational heavy-loads driven by hydrostatic systems. In addition, the model is useful within the hydraulic scheme optimization analysis and, also, for tuning of controlling algorithm of driving parameters according with required dynamic parameters at working body.