Discrete control method and device for chemical production
A technology of discrete control and chemical production, applied in the direction of total factory control, total factory control, electrical program control, etc., can solve the problems of wasting energy, failing to meet quality requirements, high process indicators, etc., and achieve the effect of saving energy
Active Publication Date: 2016-03-30
BLUESTAR BEIJING TECH CENT +1
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Problems solved by technology
However, this will make the technical index of "finished rubber volatile content %" of the products produced in the prior art too high, which not only wastes energy but also cannot meet the quality requirements
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Embodiment Construction
[0021] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.
[0022] The present invention extracts key process parameters from process parameters involved in the production process, and decomposes these process parameters into irrelevant first parameters without time lag and second parameters with time lag. Then, the measured value of the process index is used to fit the first parameter and the second parameter, so as to obtain a linear regression model between the process index and the process parameter. In this way, only according to the first parameter at the current moment and the second parameter at the historical moment corresponding to the current moment, the process index at the current moment can be estimated through the linear regression model, so as to obtain the estimate of the process index at that time value, thus providing online and real-time support for actu...
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The invention relates to a discrete control method and a device for chemical industry production. The discrete control method comprises establishing a technological index of a chemical product to be produced and a linear regression model that influences a plurality of technological parameters of the technological index; each technical parameter correspondingly having a regression coefficient, the technological parameter including at least a first parameter and at least a second parameter, the first parameter being real-time data, and the second parameter being historical data with time delay; obtaining a plurality of regression coefficients; and obtaining an estimated value of the technological index on line at the current time by using the obtained regression coefficients, the real-time value of the first parameter, the historical value of the second parameter, and the linear regression model. The discrete control method and the device for chemical industry production can provide real-time and significant guidance for a production process, saves energy, can achieve a predetermined quality requirement, and solves the problem that a key control index cannot be directly measured through a detector due to equipment hardware or technological requirements and the like.
Description
technical field [0001] The invention relates to the field of chemical industry, in particular to a discrete control method and device for chemical production. Background technique [0002] Next, taking the process of producing neoprene as an example, the discrete control method and device for chemical production in the prior art will be described. [0003] Due to equipment hardware problems and technological reasons, it is impossible to monitor the change of "volatile content of finished glue" (a key technological index) in the production process of the drying oven through the detector online in real time. The analysis of the process index in the laboratory needs to wait for the final product of the batch or shift to be produced, and the key process index of "volatile content of finished rubber" can be obtained after sampling the final product. [0004] However, the current testing frequency is approximately every 2 hours. It can be seen that any data of this indicator can...
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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 苏岳龙张庆新梁桂花李官胜周建张广义贾晓明
Owner BLUESTAR BEIJING TECH CENT