This paper considers the problem of H8 observers design for a class of Lipschitz continuous nonlinear singular systems. The\r\nmethod is based on the parameterization of the solution of the generalized Sylvester equations obtained from the estimation\r\nerrors. Sufficient conditions for the existence of the observers which guarantee stability and the worst case observers error energy\r\nover all bounded energy disturbances is minimized are given. The approach also unifies the full-order, the reduced-order, and the\r\nminimal-order observers design. The solutions are obtained through linear matrix inequalities (LMIs) formulation. A numerical\r\nexample is given to illustrate our results.
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