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A method for temperature prediction and control of traditional Chinese medicine decoction pieces in the process of gas phase displacement and moistening

A technology of traditional Chinese medicine decoction and predictive control, which is applied in the direction of temperature control with electric mode, auxiliary controller with auxiliary heating device, etc., which can solve the problems such as difficult temperature control, achieve good control, retain medicinal ingredients, reduce product The effect of attrition rate

Active Publication Date: 2021-04-06
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0003] Aiming at the problem that the temperature is difficult to control in the process of gas-phase replacement and moistening of traditional Chinese medicine decoction pieces, the present invention proposes a dynamic matrix temperature prediction control method with good dynamic performance and strong robustness. The difficult problem of temperature control in the process

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  • A method for temperature prediction and control of traditional Chinese medicine decoction pieces in the process of gas phase displacement and moistening
  • A method for temperature prediction and control of traditional Chinese medicine decoction pieces in the process of gas phase displacement and moistening
  • A method for temperature prediction and control of traditional Chinese medicine decoction pieces in the process of gas phase displacement and moistening

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[0040] The method of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] refer to Figure 1 ~ Figure 4 , a method for temperature prediction and control of the process of gas-phase displacement and moistening of Chinese medicinal decoction pieces, said method comprising the steps of:

[0042] 1) Given the desired temperature value r of the decoction pieces of Chinese herbal medicine in the gas-phase replacement moistening chamber, by increasing the opening of the steam valve by one degree, record the unit step response sequence of the temperature in the moistening chamber {a 1 ,a 2 ,...,a n};

[0043] 2) Establish a prediction model, the prediction model adopts a step response model, referring to formula (1):

[0044]

[0045] Among them, y(k) is the temperature output value of the moistening chamber at time k, Δu(k-i) is the variation of steam valve opening at time k-i, a i is the temperature step res...

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Abstract

A temperature prediction control method for the process of gas-phase replacement of decoction pieces of Chinese medicine, according to the temperature control structure of the process of gas-phase replacement of decoction pieces of Chinese medicine, the unit step response model of the temperature of the decoction pieces of Chinese medicine and the opening of the steam valve is used as the dynamic prediction model, through extreme Minimize the quadratic performance index function of the temperature tracking deviation of the moistening chamber and the variation of the steam valve opening in the future, and calculate in real time the variation of the steam valve opening during the gas phase replacement of the Chinese herbal decoction pieces, and realize the gas phase of the traditional Chinese medicine decoction pieces. Optimum automatic control of temperature tracking set value of wetting medicine in the process of displacing wetting medicine. The invention solves the problem that it is difficult to control the temperature in the gas-phase replacement and moistening process of the decoction pieces of the traditional Chinese medicine, can better control the softening process of the decoction pieces of the traditional Chinese medicine, retains the effective components to the greatest extent, improves the clinical curative effect, and reduces the product loss rate.

Description

technical field [0001] The invention belongs to the field of automatic control of the production process of decoction pieces of traditional Chinese medicine, and relates to a method for temperature prediction and control of the decoction pieces of Chinese medicine in the vapor phase replacement and moistening process. Background technique [0002] Chinese herbal decoction pieces are finished products after special processing of Chinese herbal medicines. They are the material basis of TCM syndrome differentiation and treatment. In the field of Chinese herbal decoction pieces processing, the moistening process of Chinese herbal medicines has always been a very critical process in the production of Chinese herbal decoction pieces. The moisturizing process of Chinese medicinal materials will directly affect the quality of the processing process, and then affect the quality of Chinese herbal pieces. The gas phase replacement method is one of the most commonly used methods in the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/32
CPCG05D23/32
Inventor 何德峰彭彬彬余世明郑雅羽朱威杨永祥李行诺
Owner ZHEJIANG UNIV OF TECH
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