Auto disturbance rejection parameter setting method for pH neutralization process

The invention provides an auto disturbance rejection parameter setting method for a pH neutralization process. The method comprises the following steps that: an initial auto disturbance rejection controller structure is established, a closed loop transfer function expression corresponding to the initial auto disturbance rejection controller structure is obtained, format conversion is carried out on the closed loop transfer function expression based on rapid convergence conditions of a closed loop system, and to-be-set parameters are determined; the to-be-set parameters are set one by one and acalculation mode of each to-be-set parameter is determined; and on the basis of the charge and carbide ion balance principle, a pH neutralization model is established to realize auto disturbance rejection control of the pH neutralization process, auto disturbance rejection controller parameters of the pH neutralization process are adjusted by combining the determined calculation mode of each to-be-set parameter in the au