The main goal of this paper is to develop and validate the system
identification of the Displacement Controlled (DC) linear hydraulic
system. The proposed method depends on finding the transfer function
that map the simulated output to fit the actual output. To achieve this goal,
several experiments have been performed to collect the required data to
estimate the parameters including the order of the estimated transfer
function. Experimental results in this paper demonstrate that fifth order
model with one zero shows good match between the simulated out and the
actual outputs. These results demonstrate that the proposed approach can
achieve accurate identification of DC linear hydraulic system. Moreover,
the proposed approach is general and can be applied to model any
hydraulic system working in the linear zone.