Time-varying quadratic programming by zhang neural network equipped with a time-varying design parameter r(t)

Authors:
Zhan Li;Yunong Zhang
Affiliations:
School of Information Science and Technology, Sun Yat-sen University, Guangzhou, China;School of Information Science and Technology, Sun Yat-sen University, Guangzhou, China
Venue:
ISNN'11 Proceedings of the 8th international conference on Advances in neural networks - Volume Part I
Year:
2011

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Abstract

In this paper, a recurrent neural network termed Zhang neural network (ZNN) with a time-varying design parameter γ(t) is developed and presented to solve time-varying quadratic programs subject to time-varying linear equalities. The updated design formula for the ZNN model possesses more generality because the design parameter considered is actually (e.g., in hardware implementation) time-varying, i.e., γ(t). The state vector of such a ZNN model with time-varying design parameter γ(t), can also globally exponentially converge to the theoretical optimal solution pair of the time-varying linear-equality-constrained quadratic program. To achieve superior convergence of the ZNN model, nonlinear activation functions are adopted as well, as compared with the linear-activation-function case. Simulation results substantiate the efficiency of such a ZNN model with a time-varying design parameter γ(t) aforementioned.