Mach-DSP User’s Manual
Document Number: MACH-DSP-9021
Page 80
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M.
(You can get a better view by changing the time-base on the Oscilloscope to 50
microseconds per division and then zooming as shown below.)
N.
On the Oscilloscope, Select the Position Error signal for Channel C, and set the
Error Scale Factor for 0.1 degrees per division. The Error signal will be used to help
you fine-tune the controls to eliminate overshoots, and also identify the step time
that is being achieved by the system. This is illustrated in the picture below.
O.
Increase the High Frequency Damping control to help eliminate the overshoot that
could not be eliminated using Low Frequency Damping alone, then increase Low
Frequency Damping as well. Basically you should adjust Low Frequency Damping
and High Frequency Damping to levels that will completely eliminate overshoot.
