Pruning neural networks for a two-link robot control system

  • Authors:
  • Jie Ni;Qing Song

  • Affiliations:
  • School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore;School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore

  • Venue:
  • IWANN'05 Proceedings of the 8th international conference on Artificial Neural Networks: computational Intelligence and Bioinspired Systems
  • Year:
  • 2005

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Abstract

Two-link robot arm model is extensively used in literatures for that it is simple enough to simulate conveniently, yet contains all the nonlinear terms arising in general n-link manipulators. And neural networks are reported to be computationally efficient compared with traditional PID control and adaptive control. However, when a neural network is applied, one of the key step is to choose the optimal number of neurons. In this paper, a relative large number of neurons are initially used, which is pruned during the training. The conic sector theory is introduced in the design of this robust neural control system, which aims at providing guaranteed boundedness for both the input-output(I/O) signals and the weights of the neural network.