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Cigarette weight control system starting position predicting method and system based on GPR model

A technology for starting position and weight control, applied in tobacco, cigarette manufacturing, applications, etc., can solve the problems of poor model robustness, low prediction accuracy adaptability, unsatisfactory static model prediction performance, etc., to reduce convergence time, reduce wasteful effect

Active Publication Date: 2018-07-27
HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
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Problems solved by technology

[0005] In addition, due to the time-varying production process and the diversity of equipment characteristics, the predictive performance of static models will be unsatisfactory
In order to avoid problems such as poor model robustness and low adaptability of prediction accuracy, it is necessary to continuously update the prediction model online

Method used

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  • Cigarette weight control system starting position predicting method and system based on GPR model
  • Cigarette weight control system starting position predicting method and system based on GPR model
  • Cigarette weight control system starting position predicting method and system based on GPR model

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specific Embodiment

[0091] For the currently widely used ZJ112 coiling unit to combine the above methods for verification, such as figure 2 Shown is the flow chart of the starting position prediction of the cigarette weight control system based on the online learning GPR model provided by the present invention in this embodiment, including the specific implementation steps of the method applied in this embodiment:

[0092] After the cigarette machine stops, read the target position data of the collimator before stopping and the target position data after starting in the previous n=5 stop data;

[0093] Standardize the target position data of the collimator before the shutdown, intercept the data 3 minutes before the shutdown, use the previous data to make up for those less than 3 minutes, use the target position of the collimator before the shutdown to construct the target variable set T={T k |k=1,2,...,5};

[0094] Calculate the mean value of the target position in the first 3 seconds after st...

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Abstract

The invention discloses a cigarette weight control system starting position predicting method and a predicting system based on a GPR model. The predicting method comprises the following steps: acquiring target position data of a cigarette weight control system ecreteur of a cigarette maker before stopping as well as target position data after starting, and extracting characteristic variable sets and target variable sets of the target position data before stopping and the target position data after stopping; with the characteristic variable sets and the target variable sets as training samples,initializing and training the GPR model; in accordance with the target position data before stopping in the current time, obtaining a predicted value of a starting position via the constructed GPR model, calculating and obtaining a predicted residual via the predicted value of the starting position and an actual value, and further constructing a residual predicting GPR model, so that a residual predicted value is obtained; and correcting the predicted value of the starting position, so that an output value of the starting position of a weight control system is obtained. The method achieves relatively good robustness; and possible jump influence of sudden change of a production state in some time to an overall predicting result can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of dynamic optimization of process parameters of a cigarette making machine, in particular to a method and system for predicting the starting position of a cigarette weight control system based on a GPR model. Background technique [0002] At present, the cigarette weight control system of the cigarette machine is mainly composed of a cigarette density detector, a signal processing module, an industrial control computer, a leveler (there are two ways of moving the chopper and moving the suction belt and pressing the belt wheel), and other transmission and adjustment mechanisms and other parts. Among them, the leveler is the executive part of the weight control, and the control of the weight of the cigarette is realized by controlling the lifting of the leveler: when the cigarette passes through the detector, the average weight and weight distribution of the cigarette can be obtained, By comparing with the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24C5/34
CPCA24C5/3424
Inventor 周波张开桓吴芳基
Owner HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD
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