NT-MDT Solver Next - Adjusting Working Level of the Feedback Gain

Chapter 7. Performing Measurements
131
Fig. 7-109. Approach
Fig. 7-110
7.4.1.3. Adjusting Working Level of the Feedback Gain
The greater is the level of the feedback gain (Gain parameter), the greater is data
processing speed in the feedback loop. Nevertheless, at some high level of the feedback
gain (let us call it threshold value), the mode of operation of the feedback loop becomes
unstable and noise generation occurs. Under this condition, the
IProbe signal is supplied
with a significant alternating component.
For stable operation, it is recommended to define the feedback gain to less 0.5÷0.7 of the
threshold value where the noise generation occurs. The feedback gain is adjusted in the
Gain input field.
To adjust the working level of the feedback gain, perform the following steps:
1. Double-click the
Gain input field in the Main Parameters panel. The adjusting slider of
the feedback gain will appear.