Most advanced autotuning tool in a commercial motion controller

Written by: Tom Austin-Morgan | Published:

Aerotech claims EasyTune is the most advanced autotuning tool available in a commercial motion controller. Entirely data-driven, the algorithm is said to mimic the process followed by an experienced controls engineer.

Many tuning techniques rely on basic model-fitting or ‘rules-of-thumb’ that ignore machine resonances or nonlinear behaviour, but EasyTune is said to directly measure and compensate for those effects. It assumes no prior knowledge of the system properties, and begins with a system identification operation. It continues with the development of a baseline stabilising controller followed by progressively more sophisticated compensation via loop-shaping procedures. The final controller is claimed to have the highest bandwidth practical for that particular stage system.

EasyTune has been tested and refined on different motion systems, including those with different bearing styles, drive technologies, and mechanical configurations. It requires no input from the user, completes in minutes, and provides measured verification of the servo performance when complete. EasyTune is a standard feature of Aerotech’s A3200, Ensemble, and Soloist motion controls.

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