Parameter Identification of MIMO Objects Based on Attenuation Factor Recursive Least Squares

Aiming at the problem of MIMO objects parameter identification in process control, this paper adopts attenuation factor recursive least square method to identify the MIMO objects parameter. This algorithm is based on the advantages of recursive least square method for online identification of linear MIMO objects and nonlinear MIMO objects. On the basis of adding attenuation factor into recursive least square method, the algorithm formula of attenuation factor recursive least square method and the basic steps of using this algorithm for parameter identification of MIMO objects are given. Through the simulation experiment of parameter identification of double input and double output object, it is proved that the attenuation factor recursive least square method can realize parameter identification, and improve the accuracy and convergence of parameter identification.