Steady-state output controllability and output controllability of linear systems

A definition of constant steady-state output controllability of linear systems is presented based upon steady-state control. It shows that the constant steady-state output controllability and the output controllability are not equivalent, while the condition of the former is stricter. It is also proved that the necessary condition for the constant steady-state output controllability must be a stable system, on which the several important necessary and sufficient conditions for the constant steady-state output controllability are elaborated.