cdesilva Posted June 24, 2022 Share Posted June 24, 2022 I am troubleshooting an issue related to a servo motor which we use to drive a monochromator Bragg axis. At a specific range of the motion, we observe that the x-ray beam jitters possibly due to motor oscillation. The motor is driven by an external amplifier and we use power PMAC for torque control. The motion is typically carried out by executing a motion program. We first observe the issue with our data. Afterwards we jogged the motor in the questionable range and was able to narrow down on the range where we see the oscillation. The x-ray beam stabilize upon killing power to the motor. I am guessing that the motor is trying to correct its position during this range. In any case I want to plot relevant variables by gathering data. I have not used the plotting feature for gathering and also not gathered data before. Need some help for the following #1. Determine which variables to plot #2. What is the procedure for plotting given that I can run a trajectory from EPICS controls to execute the motion program Thank you. Quote Link to comment Share on other sites More sharing options...
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