Intelligent feedforward and feedback decoupling control method for post-combustion carbon dioxide trapping system

The invention relates to the technical field of thermal control, in particular to an intelligent feedforward feedback decoupling control method for a post-combustion CO2 capture system, which comprises the following steps of: identifying a transfer function model of the post-combustion CO2 capture system: identifying based on a step response experiment to obtain a controlled open-loop transfer function array G (s); designing a decoupling compensation controller: on the basis of the existing G (s), adding a decoupling controller D (s), and according to the principle of feed-forward compensation, setting the G (s) and D (s) as a diagonal matrix to obtain a transfer function model of the decoupling compensation controller; designing a feed-forward controller: designing the feed-forward controller according to an invariance principle method based on the decoupled equivalent object; and designing parameters of the PID controller set by the genetic algorithm: on the basis of the designed decoupling compensation con