Ten lectures on wavelets
Robust stabilization of feedback linearizable time-varying uncertain nonlinear systems
Automatica (Journal of IFAC) - Special issue on robust control
Adaptive robust control of SISO nonlinear systems in a semi-strict feedback form
Automatica (Journal of IFAC)
Optimal design of adaptive tracking controllers for non-linear systems
Automatica (Journal of IFAC)
Robust nonlinear control design: state-space and Lyapunov techniques
Robust nonlinear control design: state-space and Lyapunov techniques
Gaussian networks for direct adaptive control
IEEE Transactions on Neural Networks
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We consider functionally uncertain systems which can be written in an output feedback form, where the nonlinearities are functions of the output only. The uncertainty is described by a weighted L^2 norm about a nominal system, and an approximate adaptive design is given which ensures output practical stability. The main result requires knowledge of the weighted L^2 uncertainty level. An upper bound on the LQ performance of the output transient and the control input is derived, where the cost penalises the output transient and the control effort on the time interval where the output lies outside the prescribed neighbourhood of zero to which we achieve convergence.