A method for improving blade feeding accuracy in tobacco shred production

A precision and blade technology, which is applied in the field of improving blade feeding accuracy in the production of tobacco shreds, can solve the problems of high cumulative feeding accuracy in production, excessive feeding instantaneous accuracy, etc., achieve the improvement of feeding instantaneous accuracy and cumulative accuracy, improve internal quality and follow-up Process satisfaction, effect of ensuring universal applicability

Active Publication Date: 2019-08-13
CHINA TOBACCO HEBEI INDUSTRIAL CO LTD +1
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Problems solved by technology

[0012] The invention provides a method for improving the feeding accuracy of blades in the production of tobacco shreds, so as to solve the problems that the instantaneous feeding accuracy exceeds the standard when the material flow fluctuates greatly and the cumulative feeding accuracy of the whole batch production is large

Method used

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  • A method for improving blade feeding accuracy in tobacco shred production
  • A method for improving blade feeding accuracy in tobacco shred production
  • A method for improving blade feeding accuracy in tobacco shred production

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Embodiment Construction

[0060] The present invention will be further described in detail below in conjunction with specific embodiments.

[0061] Such as figure 1 The control system block diagram of the method for improving blade feeding accuracy in tobacco shredded production is shown, and the overall pump frequency output is predicted by the feeding pump frequency u p (k) and feeding pump frequency feedback output u f (k) consists of two parts. u p (k) The calculation process is that the predictive controller calculates the predicted output value of the feeding flow , and the difference between the actual output value y(k) of the feeding flow rate, and corrected by the parameter H, combined with the set value r(k) and y(k) of the feeding flow rate to obtain the reference trajectory Y of the feeding flow rate r (k) Obtain the objective function, and calculate u through the optimization algorithm p (k); u f (k) The error value is obtained from the difference between y(k) and r(k), and is calcu...

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Abstract

The invention discloses a method for improving the feeding precision of leaves in production of tobacco primary processing. The method includes the following steps that a feeding flow set value is calculated, a prediction control model of a leaf feeding system is established, and the prediction output quantity and feedback output quantity of feeding pump frequency are calculated. With the method, the problems that when material flow fluctuates greatly, feeding transient precision exceeds standards, and feeding accumulated precision is high during batched production are solved, a good control effect can be achieved, the inner quality of products is improved, and the satisfaction degree of the follow-up procedure of the products is increased. Compared with a traditional PID algorithm, the feeding transient precision and accumulated precision are remarkably improved. On-site production data shows that when the material flow fluctuates greatly, the average value of the feeding transient precision of the leaves is decreased to 2.37% from 4.13%, and the average value of the accumulated precision is decreased to 0.04% from 0.29%.

Description

technical field [0001] The invention relates to the field of tobacco shredded production, in particular to a method for improving blade feeding accuracy in tobacco shredded production. Background technique [0002] In the tobacco cutting process, the feeding process is to transport the feed liquid configured in the spice kitchen to the leaf moistening drum through the feeding pipeline through the feed pump, and spray it on the constantly turning leaves together with the steam to complete the tobacco leaf feeding. The uniformity of feeding directly affects the taste of cigarettes, and the uniformity of feeding is reflected by the two indicators of instantaneous accuracy and cumulative accuracy of feeding. At sampling time k, the instantaneous accuracy λ(k) and cumulative accuracy Λ(k) of feeding are calculated by the following formula: [0003] [0004] [0005] Among them, δ(k) and Δ(k) are the instantaneous flow rate and cumulative flow rate of the belt scale at time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B3/12
CPCA24B3/12
Inventor 郑松锦李再段海涛刘玉斌孔冠冲朱萌刘柏松钟良解民顾农林洁李维娜霍晓晖王玉林
Owner CHINA TOBACCO HEBEI INDUSTRIAL CO LTD
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