%0 Journal Article %T Robust H¥ control of uncertain nonlinear time-varing systems via state feedback %J Iranian Journal of Science and Technology Transactions of Electrical Engineering %I Shiraz University %Z 2228-6179 %D 2013 %\ 02/17/2013 %V 25 %N 3 %P 509-513 %! Robust H¥ control of uncertain nonlinear time-varing systems via state feedback %K Robust H¥control %K nonlinear time-varing systems %R 10.22099/ijste.2013.1075 %X  This paper considers the robust control problem for an affine nonlinear time-varing system with gain bounded uncertainty. We address the problem of designing a state feedback controller such that -gain of the mapping from the exogenous input to the controlled output is less than or equal to a prescribed number g. It is shown that a state feedback control law can be found from a smooth solution of a “scaled” Hamilton-Jacobi-Isaacs inequality %U