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Moisture regaining feed-forward control method based on supplied material water content differences

A technology of feedforward control and moisture content, applied in ratio control, self-adaptive control, general control system, etc., can solve the problem that the moisture content of loose and moisture-recovered materials does not participate in feedback control, etc., achieve short delay and improve response speed Effect

Inactive Publication Date: 2013-11-06
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two cases both focused on the environment inside the cylinder and the stability of the processing medium, and the moisture content of the loose and rehydrated material did not participate in the feedback control

Method used

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  • Moisture regaining feed-forward control method based on supplied material water content differences
  • Moisture regaining feed-forward control method based on supplied material water content differences
  • Moisture regaining feed-forward control method based on supplied material water content differences

Examples

Experimental program
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Embodiment 1

[0026] The tobacco leaf that the present embodiment adopts is the B module of Yunyan (soft precious product) brand, and it comprises the following steps:

[0027] 1. The loose moisture regain drum collects the moisture signal of the material (w 1 ), w 1 Between 10-13%; then compare the material moisture signal (w 1 ) and the set value of material moisture content (w 0 ), the water addition coefficient K (K=6%) is corrected by the water addition coefficient correction formula to obtain the water addition coefficient correction value K', the formula is as follows:

[0028] K ′ = K × ( 1 - w 1 - w 0 w 0 )

[0029] w 0 =12%

[0030] After ...

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Abstract

The invention discloses a moisture regaining feed-forward control method based on supplied material water content differences. Due to comparison of the differences of smoke block supplied material water content and a preset value, a water supplying coefficient of a loose moisture regaining cylinder is modified, and therefore actual water supply amount is adjusted. The method includes the steps of collecting material water signal w1, comparing the differences between the w1 and a material water content preset value w0, obtaining a water supply coefficient modified value K' through calculation, collecting material flow signal P, obtaining a water supply amount value SP after calculation, and modifying an actual water supply amount value in real time according to the water supply amount value SP through a water flow meter after data stack delay so that the actual water supply amount value is consistent with the water supply amount value SP. Front-period turbulence is taken as a main reason, on the basis of the water content differences between smoke blocks at an inlet, a water supply coefficient K is modified, and the preventing effect of turbulence of the water content at a smoke sheet outlet is good. Data stack delay is short, and the response speed of water supply amount closed-loop control of a loose moisture regaining device is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of loosening and regaining moisture in shredded cigarettes, and in particular relates to a moisture regaining water feed-forward control method based on differences in moisture content of incoming materials. Background technique [0002] In the silk production line, the loosening and re-moisture process is the first process of the heat-humidity treatment of the leaf segments. The low-moisture content and high-density tobacco blocks are re-moisturized through circulating hot air (steam) and steam injection, and the temperature and temperature of the tobacco sheets are gradually increased. The moisture content and the processing resistance of the tobacco leaves are enhanced; and then the materials are loosened by the fork of the rake nails and the throwing movement of the materials. Due to the limited range of moisture adjustment in the feeding process, the fluctuation of moisture at the outlet of loose moistu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G05D11/00
Inventor 刘继辉华一崑方劲松徐永康向虎李绍臣
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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