CoCO-SIM Object-Oriented Multi-Pole Modelling and Simulation Environment for Fluid Power Systems. Part 2: Modelling and simulation of Hydraulic-Mechanical Load-Sensing System

摘要

Fluid power systems, in which working pressure (pressure in pump output) is kept proportional to load, are called hydraulic load-sensing systems. Such systems are mainly used in mechanisms containing numerous drives to run with the purpose to save energy. Hydraulic load-sensing systems are automatically regulating systems with a number of components and several feedbacks. It is difficult to find optimal solutions for their static, steady-state motion and dynamics. A very precise parameter setting, especially for resistances of hydraulic valve spools and for spring characteristics, is required to make the system function. As a result of current research, a simulation system is proposed that enables one to perform computer experiments at the first stage of design. Theoretical fundamentals of the approach have been described in (Grossschmidt et al., 2009).