Title :
An adaptive tracking controller using neural networks for a class of nonlinear systems
Author :
Zhihong, Man ; Wu, H.R. ; Palaniswami, M.
Author_Institution :
Dept. of Electr. & Electron. Eng., Tasmania Univ., Hobart, Tas., Australia
fDate :
9/1/1998 12:00:00 AM
Abstract :
A neural-network-based adaptive tracking control scheme is proposed for a class of nonlinear systems in this paper. It is shown that RBF neural networks are used to adaptively learn system uncertainty bounds in the Lyapunov sense, and the outputs of the neural networks are then used as the parameters of the controller to compensate for the effects of system uncertainties. Using this scheme, not only strong robustness with respect to uncertain dynamics and nonlinearities can be obtained, but also the output tracking error between the plant output and the desired reference output can asymptotically converge to zero. A simulation example is performed in support of the proposed neural control scheme
Keywords :
Lyapunov methods; adaptive control; feedforward neural nets; learning (artificial intelligence); neurocontrollers; nonlinear control systems; robust control; tracking; uncertain systems; Lyapunov uncertainty bounds; RBF neural networks; adaptive learning; adaptive tracking controller; asymptotic convergence; compensation; controller parameters; neural control scheme; nonlinear systems; system uncertainties; system uncertainty bound learning; Adaptive control; Control systems; Neural networks; Nonlinear control systems; Nonlinear systems; Programmable control; Robust control; Robust stability; Sliding mode control; Uncertainty;
Journal_Title :
Neural Networks, IEEE Transactions on