Robust fault-tolerant controller design

摘要: A robust fault-tolerant control scheme using an accurately-identified model of a plant operating in closed-loop is proposed. Parametric uncertainties are restricted to the subsystems which likely vary and do not apply entire system. good accuracy parameter estimation obtained by ensuring that identified set includes true system model, two-stage closed - loop identification. Both primary goal this paper, namely high performance controller design, secondary performance, stability condition monitoring achieved. The parametric uncertainty associated with modeled as perturbations numerator denominator polynomials develop controllers mixed-sensitivity H ∞ controller. proposed extensively tested through simulations on physical laboratory- scale magnetic levitation