Patent ID: 11898930
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for processing rotating shaft-relative vibration data, the method comprising:
measuring shaft displacement data with a pair of sensors, wherein the shaft-displacement data comprises shaft center X-axis displacement and shaft center Y-axis displacement, wherein the X-axis displacement and Y-axis displacement are orthogonal to each other;
converting the shaft displacement data to shaft velocity data by calculating a difference in shaft displacement over time;
filtering the shaft velocity data;
sorting the shaft velocity data;
grouping the shaft velocity data into three or more velocity groups;
assigning a different color to each velocity group; and
displaying an image of a velocity orbit plot on an electronic display, where the X-axis displacement and the Y-axis displacement define coordinate pairs of a trace of shaft center displacement, and the velocity group between each coordinate pair defines a display color of the trace.