The invention discloses a two-input and two-output networked decoupling
control system large network time
delay IMC method, and belongs to the
MIMO-NDCS technology field having limited bandwidth resources. By aiming at influences and
coupling between two-input and two-output signals, decoupling
processing of TITO-NDCS is required, and because of the network time
delay generated by transmission of
network data among nodes, stabilities of various closed-
loop control circuits are affected, and stability of a whole
system is affected, and then the problem of the loss of the stability of the TITO-NDCS can be even caused. The method of using the process of the
network data transmission among all of the actual nodes of the TITO-NDCS to replace a network time
delay compensation model is provided, and two-freedom degree IMC and one-freedom degree are carried out on the two
closed loop control circuits, and therefore the measurement, the
estimation, or the identification of the network time delay among the nodes are eliminated, a requirement on synchronization of node
clock signals is lowered, the influences of the network time delay on the stability of the TITO-NDCS are reduced, and
system control
performance quality is improved.