Modelling and Contouring Error Bounded Control of a Biaxial Industrial Gantry Machine

Meng Yuan1, Chris Manzie2, Lu Gan3, Malcolm C. Good2, Iman Shames4

  • 1The University of Melbourne
  • 2University of Melbourne
  • 3ANCA Motion
  • 4The University of Melbroune

Details

Category

Regular Session

Sessions

15:30 - 17:30 | Mon 19 Aug | Lau, 6-213 | MoC6

Predictive Control 2

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Abstract

Dual drive gantry machines are widely used in industry for manufacturing. However, the non-synchronised movement of the dual drive may lead to deterioration in contouring accuracy, and traditional control architectures commonly used in machining cannot explicitly bound the contouring error to meet a desired tolerance. In this paper, we propose a model predictive control architecture based on switched linear time invariant control-oriented models, that is able to guarantee a two dimensional contouring tolerance in the presence of uncertainty arising from imperfect drive synchronisation. To develop the controller, we introduce a high-fidelity model for the dual drive gantry machine and identify its parameters using data from an industrial machine, and systematically reduce it to a control-oriented model. The performance and computational tractability of the proposed approach is demonstrated using high fidelity simulations.

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