Iulian LUPEA


Order analysis is used to observe the vibration of machine elements of a rotating machinery test rig. The rotational speed of the dc motor integrated with the gear reducer and subsequent shafts, changes over time during run-ups and coast-downs. Orders viewed as harmonics of the tracked shaft rotational speed are employed to certify estimated motor stator poles and armature windings, gear pair ratios on the reducer gearbox and to sustain vibro-acoustic diagnosis of the machine elements of the test rig. This is a prerequisite to the application of some methods to detect faulty machine elements of the test rig, starting from time varying rotational speed measurements.

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