Polypropylene production quality detection system

Abstract

The invention relates to a polypropylene production quality detection system, which comprises: a data preprocessing module which is used for carrying out standardization processing on operation parameters of a propylene polymerization process to obtain input variables; a Gabor multi-scale analysis module which analyzes the multi-scale characteristics of the input variable by taking the frequency as a reference, performs multi-scale reconstruction on the variable through a Gabor kernel function, and extracts local texture feature information of the input variable in each scale and each direction under different frequencies to obtain an input feature signal; and an extreme random tree measurement model module which is used for converting the input characteristic signal and outputting a soft measurement value of the corresponding polypropylene product on the basis of a polypropylene product sample set and priori knowledge. The defects that a traditional chemical instrument lags in measurement time and is low in measurement precision are overcome, online measurement is achieved, the structure and parameter dynamic adjustment and optimization popularization capacity is high, a detection system is adjusted in a self-adaptive mode, the noise interference resisting capacity is high, and precision is high.

Description

technical field [0001] The invention relates to the field of chemical process quality detection, the field of data-driven modeling and the field of group intelligence optimization, in particular to a polypropylene production quality detection system with multi-scale adaptive intelligence and optimization. Background technique [0002] Polypropylene is a thermoplastic resin obtained by the polymerization of propylene. The most important downstream product of propylene, 50% of the world's propylene and 65% of China's propylene are used to make polypropylene. life is closely related. 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 our polypropylene products have market competitiveness, develop impact copolymer products, random copolymer products, BOPP and CPP film materials, fibers and non-woven materials with good rigidity, toughness and fluidity balance, and d...

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Problems solved by technology

[0005] In order to overcome the shortcomings of the current existing propylene polymerization production process that the quality of polypropylene can only be measured offline, the measurement accuracy is not high, and it is easily affected by human factors, the purpose of the present invention is to provide an online measurement, dynamic adjustment and optimization of structure and parameters Gabor multi-scale analysis with strong promotion ability, self-adaptive to changes in production conditions, strong anti-noise ability and high precision Polypropylene production quality inspection system with improved self-adaptive particle swarm optimization extreme random tree

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