Search for: [Abstract = "The controllers are synthesized by using a novel combination of geometric and Lyapunov\-based techniques and enforce the above properties in the closed\-loop system independently of the size of the state delay. The proposed control method is successfully applied to a fluidized catalytic cracking unit with a time\-varying uncertain variable and is shown to outperform a proportional integral \(PI\) controller, a nonlinear controller that does not account for the uncertainty, and a nonlinear controller that does not account for the state delays."]