Dynamic modeling and adaptive control of a H-type gantry stage

This paper addresses the dynamic modeling and adaptive control of a H-type gantry stage. The stage is posed as a three-degree-of-freedom system. Based on this structure, a mathematical model is built using the Lagrangian equation. An adaptive control method is formulated for the positioning of the stage, with minimal a priori information assumed of the model. A stability analysis is provided for the proposed control scheme. Both software simulation and experimental results are documented to illustrate the practical application of the scheme, and to verify the adequateness of the gantry model.

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