A new invertibility criterion for linear multivariable systems
S. Wang, Edward Joseph Davison · IEEE Transactions on Automatic Control · 1973
A new invertibility criterion for linear time-invariant multivariable systems is derived. This criterion is stated as a rank condition of a matrix whose elements consist of the system parameters (A,B,C,D) instead of the Markov parameters (D,CB, ..., CA^{n-1}B).