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An Optimal Controller for Trajectory Tracking of Automated Guided Vehicle
Technical Paper
2020-01-5024
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A trajectory tracking strategy for an Automated Guided Vehicle (AGV) is presented in this paper, containing a hybrid algorithm of a preview feedforward control and a feedback control via linear quadratic regulator (LQR). The purpose of trajectory tracking is to decrease the position and orientation errors between the trajectory and AGV. The vehicle - road dynamics model applied to establish the relationship between vehicle and trajectory and accurately describes plant motion. The preview feedforward control is adopted to solve time delay of steering mechanism in trajectory tracking. The feedback control via LQR is applied to decrease the errors caused by environmental disturbances. For real-time embedded system, the optimal gain is calculated offline and is used by lookup table online, which could reduce the computation time. The results of tests on a practical AGV system demonstrate the effectiveness and accuracy of the strategy presented in this paper.
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Citation
Jian, Z., Bo, Y., and Xiaofei, P., "An Optimal Controller for Trajectory Tracking of Automated Guided Vehicle," SAE Technical Paper 2020-01-5024, 2020, https://doi.org/10.4271/2020-01-5024.Data Sets - Support Documents
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