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Roller kiln temperature prediction integrated modeling method capable of combining mechanism with data

A modeling method and roller kiln technology, applied in the direction of electrical digital data processing, special data processing applications, computer-aided design, etc., can solve the problems that the mechanism model cannot reflect the factors affecting the temperature, and the temperature has errors, so as to improve the product quality. Production quality and qualified rate, good guidance, and accurate output results

Active Publication Date: 2017-08-11
CENT SOUTH UNIV
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Problems solved by technology

However, due to the complexity of the sintering process, the mechanism model cannot reflect all the factors affecting the temperature, and there will inevitably be errors between the obtained results and the actual temperature. Therefore, in order to obtain a more accurate temperature estimate, it is also necessary to predict the errors generated by the model in advance. big problem solved

Method used

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  • Roller kiln temperature prediction integrated modeling method capable of combining mechanism with data
  • Roller kiln temperature prediction integrated modeling method capable of combining mechanism with data
  • Roller kiln temperature prediction integrated modeling method capable of combining mechanism with data

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Embodiment 1

[0052] Step 1: Data preprocessing: pre-organize the operation data of the roller kiln process, including displaying wrong data, missing data, etc., and store them in the created database after sorting. The database mainly includes the following data: The temperature of the upper / lower temperature zone of the i-th temperature zone of the roller kiln x i1 ,x i2 , Heating power P in the upper / lower temperature zone i1 ,P i2 , the temperatures before and after the i-th temperature zone are respectively x (i-1)1 ,x (i-1)2 ,x (i+1)1 ,x (i+1)2 , the air flow v into each temperature zone i , the moving speed V of the material and bowl; the obtained data is transferred to a certain amount as training sample data, which is used to identify model parameters and establish a data error prediction model;

[0053] Step 2: First, through in-depth analysis of the factors affecting the temperature change in the i1th temperature zone, the temperature change is mainly affected by the follo...

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Abstract

The invention discloses a roller kiln temperature prediction integrated modeling method capable of combining a mechanism with data. The method comprises the following steps that: through the analysis of factors which affect temperature change, from a perspective of the temperature change and energy, establishing a mechanism model; then, considering situations that roller kiln sintering is a very complex process, a whole sintering process can not be described through a single mechanism model and the mechanism model has model errors through simplification, establishing a data model to predict model errors so as to make up mechanism output, i.e., utilizing errors to serve as a training sample to establish an error prediction model of a nonlinear time-varying process based on local weighted kernel principal component regression; and finally, combining the mechanism model with the data model to establish a roller kiln temperature prediction integration model. By use of the model, the state change of a process can be better tracked, and a good guidance function is provided for roller kiln temperature control so as to improve the production quality and the percent of pass of a product.

Description

[0001] Field [0002] The invention belongs to the field of roller kiln smelting, and in particular relates to an integrated modeling method for temperature prediction of roller kiln Background technique [0003] Lithium batteries have the characteristics of high working voltage, large specific energy, long cycle life, light weight, and less environmental pollution. They are widely used in many fields around the world, such as mobile phones, electric vehicle technology, and medical instrument power supplies. Among them, the representative battery is a lithium battery with roller kiln as the production platform and lithium cobalt oxide as the positive electrode material. The roller kiln, a sintering device for producing lithium battery cathode materials, is a light-weight continuous industrial kiln, which has the characteristics of low energy consumption, short firing cycle, and good furnace temperature uniformity. In addition, it is also a distributed heat flow field. The sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/08
Inventor 陈宁罗朗浩桂卫华阳春华戴佳阳田爽袁小锋郭宇骞
Owner CENT SOUTH UNIV
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