Auto disturbance rejection parameter setting method for pH neutralization process

Abstract

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 auto disturbance rejection controller. Since the pH neutralization process is controlled by using an improved auto disturbance rejection controller, the high robustness and anti-interference ability are realized while the tracking performance of the system is ensured. Compared with other auto disturbance rejection controllers, the auto disturbance rejection controller enables the number of to-be-set parameters to be reduced and the setting efficiency to be improved.

Description

technical field [0001] The invention belongs to the field of process control, in particular to an ADRC parameter setting method for pH neutralization process. Background technique [0002] The control of pH neutralization process widely exists in various fields of human life and production, and the rapid and precise control of pH neutralization process has extremely important practical value and economic benefits. In the field of medical and health care, the control of pH value will directly affect the content of viruses and bacteria in the water quality. Once a control error occurs, it will lead to the failure of drugs at the slightest, and the production of toxic and harmful substances at the worst. In industrial production, such as sewage treatment, improper control of the pH value of the effluent will cause serious water pollution and endanger the ecological environment. In chemical processes such as pickling and electrolysis, the pH value of the reaction process will d...

AI Technical Summary

Problems solved by technology

At present, the active disturbance rejection method is rarely used in the control of the pH neutralization process, while the conventional active disturbance rejection control strategy needs to tune more parameters, and the observed states still need to be combined nonlinearly before feedback

Moreover, the implementation of the ADRC controller lacks a specific parameter tuning strategy, and the parameter tuning process is relatively complicated, which makes the application and promotion of the ADRC control method in the pH neutralization process still have many inconveniences in the actual production process.

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