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2013 European Control Conference (ECC)
The problem of interval state observer design is addressed for time-invariant discrete-time systems. Two solutions are proposed: the first one is based on a similarity transformation synthesis, which connects a constant matrix with its nonnegative representation ensuring the observation error positivity. The second contribution shows that in discrete-time case the estimation error dynamics always can be represented in a cooperative form without a transformation of coordinates. The correspondingdoi:10.23919/ecc.2013.6669108 fatcat:opuuwmjv7nanhemen4zietmqoe