Mts Series 793 Controller Manual do Utilizador descarregar pdf (Página 62)

MTS Series 793 Controller Overview

About Compensators

Operation Concepts

ALC is typically used in matrix depletion fatigue tests where only one or two

cycles of a particular amplitude are executed before new amplitudes are

introduced.

Adaptive Harmonic

Cencellation (AHC)

Adaptive Harmonic Cancellation (AHC) works with Amplitude Phase Control

(APC) to minimize spurious harmonic distortion.

Note The adaptive harmonic canceller function can only be enabled if

Amplitude Phase Control (APC) is on.

Adaptive Harmonic Cancellation allows you to set up adaptive harmonic

cancellers to reduce or cancel spurious harmonics in the feedback when

programming sine waves. This approach injects input harmonics into the

controller command waveform with just the right phase and amplitude to cancel

the feedback harmonics.

Example of

feedback dropping

off in a test

waveform without

ALC compensation.

The same waveform

with ALC

compensation

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Mts Series 793 Controller Manual do Utilizador Página 62