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Loose conditioning moisture control method based on fuzzy PID

A control method and fuzzy control technology, applied in the direction of adaptive control, general control system, control/adjustment system, etc., can solve the problems of random interference, unknown parameters such as moisture content of incoming cigarette packs, lag, etc., and achieve satisfactory control effect, Improved moisture control ability, good robustness effect

Inactive Publication Date: 2013-10-09
CHINA TOBACCO ZHEJIANG IND
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Problems solved by technology

Among them, the parameters such as the moisture content of the incoming cigarette pack are unknown, and the whole system has hysteresis and random interference, so it is a mathematical model that cannot be obtained accurately

Method used

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  • Loose conditioning moisture control method based on fuzzy PID
  • Loose conditioning moisture control method based on fuzzy PID
  • Loose conditioning moisture control method based on fuzzy PID

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Embodiment Construction

[0021] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 Shown is a fuzzy PID-based loose moisture control method for leaf moistening, which adopts the method of parallel superposition of fuzzy control block 1 and PID control block 2. Such as figure 2 As shown, the fuzzy control block 2 includes a fuzzy interface 3 , a rule base 4 , a database 5 , an inference engine 6 and a defuzzification interface 7 . Such as image 3 As shown, the PID control end of the whole model adopts a digital PID controller, and its closed-loop feedback type can improve the control accuracy; the fuzzy controller first fuzzifies the PID output, and then refers to the established database 4 and the defined rule base 5 in the inference engine 6 in order to make timely adjustments, and finally restore the data format through the defuzzification interface 7, and finally superimpose on t...

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Abstract

The invention relates to a loose conditioning moisture control method based on fuzzy PID. According to the method, the mode that a fuzzy control block and a PID control block are connected in parallel and overlaid is adopted, a digital PID controller is used in the PID control end of the entire model of the PID control block, feeding-back and inputting are conducted through the proportion (P), integration (I) and differentiation (D) operation, and a closed loop feedback mode is used for improving control accuracy. The fuzzy control block comprises a fuzzification interface, a rule base, a data base, an inference engine and a defuzzification interface. The fuzzy control block conducts fuzzification on PID output quantity first, afterwards, the established data base and the defined rule base are cited for calculation in the inference engine in order to make timely adjustment, finally data format reduction is carried out through the defuzzification interface, and output interfaces are overlaid ultimately. By means of the loose conditioning moisture control method based on the fuzzy PID, the requirement for exact match control can be met, an incoming material moisture pre-judgment mechanism can achieve timely self-regulation, and thus the purpose for improving moisture control ability is achieved.

Description

technical field [0001] The invention relates to an automatic moisture control method applied to the tobacco shredded process, in particular to a fuzzy PID-based moisture control method for loose leaf moistening. Background technique [0002] The process of loosening and moistening the leaves of the silk thread is mainly to process the tobacco sheets after threshing and rebaking. Specifically, the cigarette blocks output by the vertical slitting machine are loosened into tobacco sheets, and the tobacco sheets are heated and humidified. The advantages and disadvantages of the moisture control accuracy of the tobacco sheet are particularly important for improving the toughness and processing resistance of the tobacco sheet. [0003] The fuzzy controller is a new type of controller developed in recent years. Its advantage is that it does not require the precise mathematical model of the controlled object, but organizes the control decision table according to the manual control r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 郭奔李汉莹朱辉平王有利孙哲建
Owner CHINA TOBACCO ZHEJIANG IND
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