Parameter setting method of thermal process active disturbance rejection time delay controller and controller

Abstract

The invention discloses a parameter setting method of a thermal process active disturbance rejection time delay controller and a controller, and the parameter setting method comprises the following steps: setting a control object with a first-order inertia pure lag characteristic by adopting an active disturbance rejection time delay controller parameter setting mode based on relative time delay margin; wherein the parameters of the auto-disturbance rejection time delay controller parameter setting mode based on the relative time delay margin comprise a gain parameter b0, an extended state observer parameter omega o and a proportional gain parameter kp; the specific quantitative characterization of the auto-disturbance rejection time delay controller parameter setting mode based on the relative time delay margin being as follows: a dimensionless number lambda and a dimensionless number xi are introduced to characterize kp and omega o, quantitative comparison is carried out based on therelative time delay margin, and then giving a reference setting value of the dimensionless number. According to the parameter setting method of a thermal process active disturbance rejection time delay controller, the stability of a closed-loop system after parameter setting can be guaranteed, the auto-disturbance rejection time delay controller parameter setting method is suitable for most thermotechnical processes with the first-order inertia pure lag characteristic, and good control quality can be obtained.

Description

technical field [0001] The invention relates to the technical field of thermal process control, in particular to a parameter setting method of a thermal process active disturbance rejection time-delay controller based on a relative time-delay margin. Background technique [0002] In recent years, PID (proportional-integral-derivative) controllers or PI (proportional-integral) controllers have been dominating the field of thermal process control in thermal power plants. This is due to its simple structure and ease of use, especially engineering practitioners can use various mature parameter tuning methods to know the use of the controller. According to a recent survey of thermal process fields such as power generation, about 94.4% of the regulating controllers in use are PI controllers, of which the Skogstad Internal Model Control (SIMC) tuning rule is said to be the best PID in the world The tuning rules are widely used. However, it is still difficult for PID controllers t...

AI Technical Summary

Problems solved by technology

Specifically, the sporadic application of TD-ADRC in thermal power plants usually requires the presence of a control theory expert, which consumes a lot of time and effort in tuning parameters and training field operators

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