Delta ASD-A2-0121 Series User Manual page 236

ASDA-A2 Chapter 6 Control Mode of Operation
Generally, instrument is needed when applying frequency domain for measurement. Users are
required to adopt the measurement techniques; while time domain only needs a scope and goes
with the analog input/output terminal provided by the servo drive. Thus, time domain is frequently
used to adjust PI controller. The abilities of PI controller to deal with the resistance of torque load
and the following command are the same. That is to say, the following command and resistance of
torque load have the same performance in frequency domain and time domain. Users can reduce
the bandwidth by setting the low-pass filter in command end.
Auto Mode
Auto mode adopts adaptive principle. The servo drive automatically adjusts the parameters
according to the external load. Since the adaptive principle takes longer time, it will be unsuitable if
the load changes too fast. It would be better to wait until the load inertia is steady or changes
slowly. Depending on the speed of signal input, the adaptive time will be different from one another.
Motor Speed
W
Inertia Estimation
Inertia Measurement
J
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