DYNAMICS OF VARIABLE DISPLACEMENT PUMP CONTROLS

Abstract

For a medium pressure axial piston unit installed in a test circuit where two variable restrictors excite the system transients, a dynamic model explores the performances of individual controls. For two case-studies (“pressure compensator” and “flow compensator”) a reference configuration is treated in some detail and checked for sensitivity. Multiple controls are then introduced by giving two examples of “free” structures, identifying the general class of “modular” structures and outlining few interaction problems.