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On-line learning control of autonomous underwater vehicles using feedforward neural networks

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3 Author(s)
K. P. Venugopal ; Florida Atlantic Univ., Boca Raton, FL, USA ; R. Sudhakar ; A. S. Pandya

A neural-network-based learning control scheme for the motion control of autonomous underwater vehicles (AUV) is described. The scheme has a number of advantages over the classical control schemes and conventional adaptive control techniques. The dynamics of the controlled vehicle need not be fully known. The controller with the aid of a gain layer learns the dynamics and adapts fast to give the correct control action. The dynamic response and tracking performance could be accurately controlled by adjusting the network learning rate. A modified direct control scheme using multilayered neural network architecture is used in the studies with backpropagation as the learning algorithm. Results of simulation studies using nonlinear AUV dynamics are described in detail. The robustness of the control system to sudden and slow varying disturbances in the dynamics is studied and the results are presented

Published in:

IEEE Journal of Oceanic Engineering  (Volume:17 ,  Issue: 4 )