Parker Hannifin (France)

The present communication deals with the development of new EHA modules for injection molding machines, which involve industrial motor power drive, brushless motor and vane pump for downsizing and energy saving when actuators are used in sequence. Once introduced the evolution in actuation for such applications, the interest of EHA architecture is pointed up. In a second part, a simple control model is developed, highlighting explicitly the functional and parasitic effects for the different mode of use: motor speed control, cylinder pressure control and cylinder position control. The last part is dedicated to the virtual prototyping with special focus on energy losses within the module. Model structures and their implementation are proposed for pump frictions and internal leakages that use standard components of the LMSAMESim libraries. The influence of speed and pressure are introduced either through look-up tables or simple parametric model which parameters are identified from real experiments.