Abstract
This paper considers the observation of linear, time-invariant dynamical systems in the general case in which some of the input functions are unknown. By arguments based on the concepts of controlled and conditioned invariance, a convenient expression for the observability subspace is found which includes the well-known expression for the case in which the input functions are given.
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Communicated by G. Leitmann
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Basile, G., Marro, G. On the observability of linear, time-invariant systems with unknown inputs. J Optim Theory Appl 3, 410–415 (1969). https://doi.org/10.1007/BF00929356
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DOI: https://doi.org/10.1007/BF00929356