In order to improve the response property of a closed-loop control system, in general, the control-weighting of cost function is given a positive value. But this may cause the offset in the output of the system. Also, the offset may occur because of input diturbance. To eliminate these offsets, in the closed-loop control system constructed by generalized minimum variance control (GMVC), the structure of the control system must be modified. However, appropriate methods for removing the offsets have not become clear as yet.
In this paper, we study about the methods to remove the above mentioned offsets in GMVC. We have studied several methods for removing the offsets. These methods are expressed in numerical expressions and we verified them by using the final value theorem. Also we have verified them by numerical simulations.