MTS Series 793 - Manual (Page 270)

b) Set the Amplitude Min/Max.
c) Set the Freq Convergence.
d) Set the Frequency Min/Max.
e) For Adaptive State, select Resume All.
6. On the File menu, select Save Parameters to save the values.
About Peak/Valley Phase (PVP) Compensators
The Peak/Valley Phase (PVP) compensator combines amplitude and phase (APC) with Peak/Valley
Compensation (PVC) algorithms to improve the amplitude and phase tracking of the command and sensor
feedback.
The advantages of this technique are:
• PVP compensates for phase error, unlike PVC.
• PVP provides good amplitude tracking on nonlinear specimens, unlike APC.
• PVP adjusts the mean command level if it detects mean-level divergence in the feedback signal.
The PVP compensator’s computational requirements may limit the sampling rate on multichannel systems.
Note:
The PVP compensator may have difficulty compensating command waveforms below 0.5 Hz.
The PVP is a phase compensator cascading into a peak/valley compensator. The phase algorithm is similar
to the one used by APC. The peak/valley algorithm is identical to the one used by PVC.
Peak-Valley Phase (PVP) Compensators
Item Callout
Segment Generator 1
Phase Compensator 2
270 MTS Series 793 Control Software
Station Setup