AUTOMATIC TEST EQUIPMENT FOR HYDRAULIC DEVICES

摘要

A variety of hydraulic units (10) may be tested by a single apparatus. A microprocessor (18) furnishes a pump (24) with control signals for pressurizing hydraulic fluid and varying the flow output to preselected levels. A fluid control test panel (12) includes a valve (52) for directing pressurized fluid into the inlet and then into the outlet of a unit undergoing test to complete leakage tests. Transducers (58) sense mechanical motion parameters as parts of the unit undergoing test are moved by controlled amounts. Electrical outputs from the transducers drive measurement instruments (60) and resulting measurements are stored in the microprocessor (18).