| 摘要 |
PURPOSE: A machine protection system for rotating equipment is provided, which includes a memory storing baseline vibration amplitude and phase data in a unit circle, and a comparison unit that compares the sensed vibration amplitude and phase with the baseline vibration amplitude and phase data. CONSTITUTION: A vector sensor unit(12) includes one or more proximity probes(14) and an angle position sensor(16). In the present embodiment, the angle position sensor(16) detects an angle position of the rotor. A control system(18), such as the General Electric Mark V control system controls the operation of the gas turbine(10). A processor(20) and memory(22) form part of the control system and receive data input from the vector sensor unit(12). The memory(22) stores baseline vibration amplitude and phase data in a unit circle(24), which incorporates deviation ranges for triggering alarms. Vibration temporal displacement is measured by the vector sensor unit(12) and is characterized by both amplitude and phase. Vibration alarms are generated by comparing with a comparator in the control system(18) the proximity probe amplitude and phase measurements vectorially with a set of baseline displacement values, including baseline vibration amplitude and phase data.
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