MTS Series 793 - Manual (Page 250)

5. In the PVC tab, define PVC values:
a) Set the Convergence Rate.
b) Set the Sensitivity.
c) For Adaptation State, select Resume.
6. To save the values, go to the Station Manager window’s File menu and select Save Parameters.
About Amplitude and Phase Control (APC) Compensators
The Amplitude and Phase Control (APC) compensator monitors feedback from sine and sine tapered
commands for amplitude roll-off and phase lag.
• APC increases the command amplitude if it detects roll-off in the feedback signal.
• APC alters the command phase if it detects phase lag in the feedback signal.
APC guidelines
APC is a good choice when you need to control the amplitude of the fundamental frequency component.
• If you want to achieve peaks, particularly if the feedback is distorted, using APC is not a good choice.
• APC’s computational requirements may limit the sampling rate on some older multichannel systems.
• For best results when using APC, you may have to adjust the I Gain for the control mode being
compensated.
APC Tab Settings
Description Item
Sets how quickly compensation values are applied to converge the
feedback and command signals. Convergence Rate
Hold—Continues to use current values but stops adapting new values. Adaptation State
Resume—Adapts and continuously updates compensation values.
Clears acquired compensation values and restarts the adaptation process. Reset
Clicking Reset with compensation applied may produce a spike in the
feedback signal. Read the Warning that follows this table.
250 MTS Series 793 Control Software
Station Setup