Chaos-based agile and high-precision optimal soft measurement meter for propylene polymerization production process

Abstract

The invention discloses a chaos-based agile and high-precision optimal soft measurement meter for a propylene polymerization production process. The optimal soft measurement meter comprises a propylene polymerization production process unit, a field intelligent instrument, a control station, a DCS database for data storage, an optimal soft measurement model for optimizing a chaotic least squares support vector machine with a differential evolution algorithm and a melt index soft measurement value displayer, wherein the field intelligent instrument and the control station are connected with thepropylene polymerization production process unit and connected with the DCS database; the optimal soft measurement model is connected with the DCS database and the soft measurement value displayer; the optimal soft measurement model for optimizing the chaotic least squares support vector machine with the differential evolution algorithm comprises a data preprocessing module, a chaos analysis module, a least squares support vector machine module, a model updating module and a differential evolution algorithm optimizing module. With the adoption of the chaos-based agile and high-precision optimal soft measurement meter for the propylene polymerization production process, agile and high-precision chaos forecast is realized.

Description

Technical field [0001] The invention relates to a chaotic, agile and high-precision optimal soft-measuring instrument and method, in particular to an optimal soft-measuring instrument for propylene polymerization process based on a differential evolution algorithm to optimize chaotic least square support vector machines. Background technique [0002] Polypropylene is a thermoplastic resin made by polymerization of propylene. The most important downstream product of propylene, 50% of the world’s propylene and 65% of my country’s propylene are used to make polypropylene. It is one of the five general-purpose plastics. Is closely related to daily life. Polypropylene is the fastest growing general-purpose thermoplastic resin in the world, second only to polyethylene and polyvinyl chloride in total. In order to make my country's polypropylene products competitive in the market, develop impact copolymer products, random copolymer products, BOPP and CPP film materials, fibers, non-woven...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of low measurement accuracy and slow speed in the existing propylene polymerization production process, the purpose of the present invention is to provide a chaos forecasting, agile and high-precision optimal soft sensor instrument for the propylene polymerization production process

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