Comparative Analysis on the Main Architectures for Hydraulic Mobile Machines

The present work aims to analyse the main hydraulic architecture used in hydraulic mobile systems: Constant Pressure, Variable Pressure, Load Sensing, Positive Control, Open Centre and Negative Control. The purpose is to analyse the main intrinsic characteristics of each architecture, by means of a simulation of a system composed by an individual actuator. Based on an inverse simulation process, control parameters that are typical of each single architecture, were identified in order to ensure a precise speed profile, allowing to compare the characteristics of each system, starting from the energy efficiency and getting to interesting aspects regarding the ease of control and stability.