Extended High-Gain Observer for Robust Position Control of a Micro-gripper in Air and Vacuum

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TitreExtended High-Gain Observer for Robust Position Control of a Micro-gripper in Air and Vacuum
Type de publicationConference Paper
Year of Publication2015
Auteursde Faria MGaudenzi, Haddab Y, Le Gorrec Y, Lutz P
Conference Name2015 INTERNATIONAL CONFERENCE ON AUTOMATION SCIENCE AND ENGINEERING (CASE)
PublisherIEEE; IEEE Robotics & Automation Society; ABB; Chalmers; Wingquist Laboratory; City of Gothenburg; Cognibotics; Kuka; Volvo; AREUS; Information and communication technology
Conference Location345 E 47TH ST, NEW YORK, NY 10017 USA
ISBN Number978-1-4673-8183-3
Résumé

This paper aims to develop a position tracking controller for a micro-gripper's tip. The controller should be robust, able to compensate external disturbances and perform precise reference tracking under parameter variation and incertitudes. It becomes clear when considering the gripper's response on two different environments: air and vacuum. In this work, two models were identified based on experimental data, one for each case of study, and an extended high-gain observer controller based on output feedback is proposed. Simulations show that the controller, chosen to achieve a desired performance for the system in air, is able to maintain similar results in vacuum. The proposed setup was implemented in real-time for the system in air and simulated for vacuum.