D2 Drive User Guide v1.8 6. Drive Tuning
HIWIN Mikrosystem Corp. 179
6.7. Loop constructor
“Loop constructor” allows users to confirm the stability of control system. It has spectrum
analysis tools, such as Nyquist, Nichols, and Bode, and provides users for adjusting filters and
gain values (vpg, vig, ppg, and CG). This function can directly adjust parameters to observe
the frequency response of control system. To open the “Loop constructor” window, click the
“Loop constructor” option in the “Tools” menu of Lightening, as shown in Fig. 6-47. The “Loop
constructor” window is given in Fig. 6-48.
Fig. 6-47 Open “Loop constructor” from “Tools”
Fig. 6-48 Loop constructor interface
Gain margin and phase margin
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