This correspondence considers a problem of robust impulse control of uncert
ain singular systems by decentralized output-feedback. It derives a perturb
ation upper bound that ensures the existence of decentralized output-feedba
ck control law such that the closed-loop system remains both regularity and
impulse free for any allowable perturbations. Algebraic sufficient conditi
ons are also presented that guarantee the existence of so-called decentrali
zed robust impulse controllers.