Linear Motion Profile Generation using a Danaher Thomson Actuator with Ball Screw Drive
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2014, Vol 11, Issue 2
Abstract
A Danaher Thomson linear actuator with ball screw drive is used here to generate vibrations in the 1-3 Hz frequency range. More precisely, the linear motion profile corresponding to the vertical displacements induced under the driver seat by the car ride on some real random road profile was successfully generated using this Danaher Thomson actuator. Also was generated a simplified linear motion profile corresponding to the sum of three sinusoids: a first sinusoidal vibration with A1=2cm amplitude and f1=1 Hz frequency, a second sinusoid with A2=1.5cm amplitude and f2=1.5 Hz frequency and a third sinusoid with A3=1cm amplitude and f3=2 Hz. The actuator is commanded in position (“position mode”), but also in acceleration; for each elementary motion from one position to another, the user provides the limitations in velocity and acceleration/deceleration. The paper presents a simple method to automatically compute the uniform acceleration, maximum velocity and uniform deceleration needed for an elementary motion, taking into account the importance of increasing as much as possible this lifetime expectancy of the ball screw drive.
Authors and Affiliations
Dan DUMITRIU, Daniel BALDOVIN, Emil VIDEA
Keywords
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