Anti-swing control for 2-D under-actuated cranes with load hoisting/lowering: A coupling-based approach
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Published on: May 25, 2016
Xue Li1, Xiuhui Peng1, Zhiyong Geng1
1State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, Peking University, Beijing 100871, China.
Abstract:
In this paper, we present a coupling-based anti-swing control for 2-dimensional (2-D) under-actuated cranes with load hoisting/lowering, which achieves precise trolley positioning, accurate load hoisting/lowering and efficient load swing suppression. Compared to the existing methods for cranes with load hoisting/lowering, this paper introduces a novel composite signal which enhances the coupling behavior between the actuated and under-actuated variables. Then, based on this signal and its derivatives, we constructed our controller without linearization or approximation operations to the original nonlinear crane model. In addition, some common assumptions related to the rope length and original model among existing works are further relaxed in this paper. Last, we provide numerical simulation results to validate the feasibility and effectiveness of the proposed controller.
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