An outline of the modules follows. All parameters are entered by means of a simple dialog. The principle function is to determine a 'transfer function' that represents the performance of this element, the 'liquid spring', in the Frequency domain. A secondary function is to test the integrity of the circuit in terms of cavitation, pressure saturation, induced pressure due to overunning loads etc. This module provides a number of manufacturers databases in which the steady-state and dynamic characteristics of the valves are stored, and which are available for selection to complete the hydraulic circuit.
Selection can be either automatic or manual.
The percentage spool travel gives an indication of the size of the valve relative to the required duty. There is also the facility to create customized databases using normal catalogued data. The need for constant reference to catalogues is thus eliminated. Steady-state errors can be viewed in this module. This is the heavyweight calculating module where the various elements are drawn together to determine the overall performance of the system i.e. the Frequency Response Parameters.