Glossary: Closed-Loop Tuning Disturbance

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Closed-Loop Tuning Disturbance (Amplitude & Frequency)

The oscillation Amplitude (primary units) and Frequency (Hz) control the disturbance magnitude for Closed Loop Tuning. Together they make the sinusoidal motion that Automation1 commands to the axis. When you do Closed Loop Tuning, the motion is a group of sine waves. The oscillations start with the ones that you specify in the Oscillation Options toolbar. Then the frequencies get larger and the amplitudes get smaller. For an axis that generates linear motion, Aerotech recommends that you specify an Amplitude of 25 mm. For an axis that generates rotational motion, Aerotech recommends that you specify an Amplitude of 45 degrees. For each type of axis, Aerotech recommends that you start with an oscillation Frequency (Hz) of 1.5 Hz. If the Closed Loop Tuning quality estimate is less than 50%, it might be possible to make the quality estimate better by increasing the oscillation Amplitude (primary units) or Frequency (Hz). You can also try increasing these two values at the same time.