MTS Series 793 Controller - Manual (Page 61)

About Compensators
MTS Series 793 Controller Overview Operation Concepts 61
AIC is typically used in tests on linear specimens in which road profiles
developed on a separate system must be accurately reproduced without having to
iterate.
AIC is also used on fast sine sweeps, particularly when the sweep rate is too fast
(>1Hz/s) for APC, and on any component being tested with random or time
history signals on a linear system.
Extended AIC (AICX)
AICX is an extended version of AIC for use with MTS Series 494 hardware
(basic AIC is typically used with MTS Series 493 hardware).
AICX compensation offers the following benefits over AIC:
• Performs bulk processing in the background, which decreases sensitivity to
the processor load
• Handles low coherence areas better and often allows compensation through
the region of low coherence
• Allows the use of significantly higher FIR filters with less impact on
performance.
Arbitrary Level Control
(ALC)
ALC is an adaptive compensation technique that improves the tracking accuracy
of spectrum profiles played out with the MultiPurpose TestWare application. This
technique is also known as “from-to matrix compensation.”
ALC works with linear or nonlinear specimens, and can be used with cyclic
waveforms or random profiles
ALC provides the option to have the test frequency adjusted to suit mechanical
system capability (to optimize frequency as well as amplitudes to minimize test
time)