Intelligent sensitive plate temperature modeling method based on mixed elite captivity optimization

Abstract

The invention, which relates to the technical fields of model establishment and controlling of the chemical engineering process industrial system model, discloses an intelligent sensitive plate temperature modeling method based on mixed elite captivity optimization. Being different from the natual-calculation-based optimization algorithm, an optimization algorithm based on mixed elite captivity introduces the artificial captivity concept to cultivate expected key species with great effort. The temperature of a sensitive plate in a rectifying tower is adjusted by adjusting the opening of a valve of a reboiler heat source; and the control loop is one first-order plus dead-time link. When the algorithm is applied to the model identification of the first-order plus dead-time system, the precision of model identification of the sensitive plate temperature control loop of the rectifying tower can be improved well; and the solid foundation is laid for using the advance control plan on the type of device. The method is operated simply; the searching power is high and the convergence is accelerated; the trapping in local optimum is prevented; the time is saved for the optimization problem and the system identification requirement is met completely.

Description

technical field [0001] The invention relates to the technical field of model modeling and control of chemical process industry systems, and more specifically relates to an intelligent modeling method for temperature of a sensitive plate based on a Mixed Elite Captivity Optimization (MECO) algorithm. Background technique [0002] In recent decades, control theory has experienced continuous development and great progress, and research on advanced control methods has achieved fruitful results. But the value brought to the industry is far from reflected. Most of the control systems still stay on single-variable PID control, and because of unreasonable parameter setting, it is difficult for the controller to achieve the desired effect. On the one hand, the reason is the lack of dynamic models that accurately describe industrial processes, while advanced control is based on models. [0003] Due to the complex physical process and chemical reaction in the petrochemical process, w...

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Problems solved by technology

However, due to the complex mechanism of the distillation column, which involves complex physical and chemical processes, and there is a serious hysteresis, the system has obvious overshoot and the stability of the system is destroyed.

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