Simulation of an Electrohydraulic load-sensing system with Ac motor and frequency changer

There is an effective trend using input energy of dynamic systems nowadays. It is the same in the branch design and control of electrohydraulic systems. We try to develop systems characterised by high efficiency coefficients.
Standard electrohydraulic systems are characterised by low efficiency. A pump produces oil characterised by constant pressure and constant flow. As a result of this is energy wasted by stranglehold and by the pressure issue of the system. There are systems characterised by a higher coefficient of efficiency.

The main part of my paper goes in the electrohydraulic Load-Sensing system. The scheme of this system is presented and itemised. There are presented models of items and solution of control circuits in the paper as well as the result of the simulation.