• Article  

      Delayed observers for linear systems with unknown inputs 

      Sundaram, S.; Hadjicostis, Christoforos N. (2007)
      We present a method for constructing reduced-order state observers for linear systems with unknown inputs. Our approach provides a characterization of observers with delay, which eases the established necessary conditions ...
    • Article  

      Partial state observers for linear systems with unknown inputs 

      Sundaram, S.; Hadjicostis, Christoforos N. (2008)
      We consider the problem of constructing partial state observers for discrete-time linear systems with unknown inputs. Specifically, for any given system, we develop a design procedure that characterizes the set of all ...