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This paper proposes an optlmlzatmn-based approach to the robust 7-to~ control problem of uncertain contmuous or dmcrete-tlme linear tzme-mvariant systems with different tzme-varying delays m the state vector and control input of the dynamic equation and controlled output Sufficient delay-dependent conditions are derived for the control stabflmatmn problem, where both the sine of the tzme-varying delay and the raze of its time derivative (m the continuous-time case) play a crucml role for the closed-loop stabflzty with a guaranteed TLc¢ performance index. The solutmns that are proposed for the Hoo control problem are similar or less conservative, when compared to other recent approaches (~)

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