The paper deals with the resilient attitude tracking problem for state-unmeasurable spacecraft under actuator faults and time-varying input delay by developing a new observer-based switching linear parameter-varying (SLPV) approach. First, the uncertain nonlinear dynamics of spacecraft rotational motion are modeled as a SLPV system, where a persistent dwell time (PDT) constraint is exploited for ruling the switching mechanism. Then, using the delay-dependent multi-Lyapunov functions method, a parameter-dependent fault-tolerant SLPV controller i...
