Filament constant-tension control method based on optimized BP neural network

Abstract

The invention discloses a filament constant-tension control method based on an optimized BP neural network. The method comprises the steps of: building a filament constant-tension control hardware system based on the optimized BP neural network; determining a BP neural network structure, input sample data and an expected output value of the neural network; initializing populations of weights and threshold values, and calculating the fitness values of the populations; performing selection , crossing and mutation operation on the initial value and threshold value of the neural network; performing winning and elimination according to fitness values obtained after genetic operation; describing a weight matrix and a threshold value matrix in the optimized BP neural network structure into a chromosome string; and adopting judgment on whether a system reaches required precision or not as an end condition, under the condition that the system reaches the required precision, ending the algorithm, and otherwise, returning to continue the operation. With the method adopted, the problem that in the prior art, tension is not stable in the wool sprayed tape yarn is solved.

Description

technical field [0001] The invention belongs to the technical field of filament constant tension control, and in particular relates to a filament constant tension control method based on an optimized BP neural network. Background technique [0002] The textile industry is a representative of the development of a country's light industry, a basic industry of the country, and an indispensable industry for the society. China is a big country with a rich history and culture. In the Tang Dynasty, silk became a symbol of Chinese cultural exchange at that time. Silk represented my country's advanced culture and textile technology. With the continuous development of science and technology, people are not satisfied with food and clothing, but pay more and more attention to spiritual enjoyment. Therefore, people have higher and higher requirements on the quality of fabrics, softness and warmth retention. With the continuous reform and innovation of technology, the equipment of my co...

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Problems solved by technology

[0004] The purpose of this invention is to provide a kind of filament constant tension control method based on optimized BP neural network, which solves the problem of unstable tension in the hair-spraying tape yarn that exists in the prior art

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