ARX(∞) Model Approximation
Chen Han-Fu, Lei Guo · Systems & control · 1991
In preceding chapters, we have studied finite dimensional linear systems of the form (3.91), or (9.1) $$ {y_n} = [I - {C^{ - 1}}(z)A(z)]{y_n} + {C^{ - 1}}(z)B(z){u_n} + {w_n}, $$ where C−1(z)A(z) and C−1(z)B(z) are rational transfer matrices.