Hiwin D1 - Nyquist

D1 Servo Drive User Manual Tuning
HIWIN MIKROSYSTEM CORP. 6-39
MD20UE01-2109
6.7.2.2 Nyquist
Select Nyquist in Loop constructor window to simulate and analyze the frequency responses of velocity
open loop (Vel open loop) and position open loop (Pos open loop) of control system. Check the checkbox
of Vel open loop or Pos open loop to simulate and analyze its Nyquist plot. The checkboxes of Vel
open loop and Pos open loop can be checked at the same time. The Nyquist plot of position open loop
is shown in figure 6.7.2.2.1. Click on the curve to display frequency response value to analyze control
system.
(1) Vel open loop: Show the frequency response of velocity open loop.
(2) Pos open loop: Show the frequency response of position open loop.
Figure6.7.2.2.1 Nyquist plot of position open loop