A dual neural network for redundancy resolution of kinematically redundant manipulators subject to joint limits and joint velocity limits

Authors:
Yunong Zhang;Jun Wang;Youshen Xia
Affiliations:
Dept. of Autom. & Comput.-Aided Eng., Chinese Univ. of Hong Kong, Shatin, China;-;-
Venue:
IEEE Transactions on Neural Networks
Year:
2003

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Abstract

In this paper, a recurrent neural network called the dual neural network is proposed for online redundancy resolution of kinematically redundant manipulators. Physical constraints such as joint limits and joint velocity limits, together with the drift-free criterion as a secondary task, are incorporated into the problem formulation of redundancy resolution. Compared to other recurrent neural networks, the dual neural network is piecewise linear and has much simpler architecture with only one layer of neurons. The dual neural network is shown to be globally (exponentially) convergent to optimal solutions. The dual neural network is simulated to control the PA10 robot manipulator with effectiveness demonstrated.