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More than never, the automation of industrial processes has high technical requirements.
Today, most of the fabrication processes must operate with an efficient and precise control
of different parameters like: velocity, position and torque. Simultaneously, the controller
must be immune enough to the outside world perturbations typically found in industry. At
the same time, the kind of movement required by today processes is beyond the simple
rotational configuration. Linear actuators are making their appearance in the industry, being
already a reality and a truly available option that designers and engineers can consider. The
traditional conversion method used to transform rotational motion into linear displacement
is no more acceptable. In the old days, linear displacement was obtained from a rotational
motor shaft, after mechanical conversion by a specific mechanism containing pulleys, worm
gears and belts. The presence of these components diminishes the robustness and reliability
of the industrial processes. [...]
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Intech Open Limited