Multivariable dynamic on-line monitoring method and device for continuous chemical production process
A chemical production, multi-variable technology, applied in the direction of program control, comprehensive factory control, comprehensive factory control, etc., can solve problems such as the inability to achieve multi-dimensional comprehensive monitoring, and achieve the effect of improving the one-time pass rate of products and improving control accuracy.
Active Publication Date: 2016-11-09
BLUESTAR BEIJING TECH CENT
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Problems solved by technology
[0004] The purpose of the present invention is to provide a multi-variable dynamic online monitoring method and device in the continuous chemical production process to solve the problem in the prior art that the fixed upper and lower limits are used to conduct independent online monitoring of each key control variable and cannot realize multi-dimensional comprehensive monitoring. question
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[0023] 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.
[0024] The inventor finds that: in many practical problems of continuous chemical production, there is a certain correlation between the two variables, so the present invention attempts to find out several comprehensive indicators, and these comprehensive indicators can be obtained by the linear combination of the original indicators, so that It not only retains the information of the original indicators, but also can be independent of each other. To measure the quality of an indicator, in addition to its correctness and accuracy, it must also fully reflect the variation among individuals, that is, the indicator can provide a significant degree of individual differentiation. The greater the variation of an indicator among individuals, the more information it provides "More and more.
[0025] The purpose of the pre...
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The invention discloses a multivariable dynamic on-line monitoring method and device for a continuous chemical production process. The multivariable dynamic on-line monitoring method comprises steps of obtaining history data, using a main component analysis method to search two main components according to the history data, determining two main components expressions corresponding to the two main components for describing a normal production mode, substituting the history data into the two main component expressions so as to obtain a corresponding main component scoring matrix, generating a closed area for describing a normal production mode on the basis of the main component scoring matrix, obtaining real-time data for describing key control variables of the two main components, calculating a real-time score according to the real-time data and the two main component expressions, determining whether the position of the current production mode is in the closed area according to the real-time score, and if not, issuing an alarm. The multivariable dynamic on-line monitoring method and device can improve control precision of optimization of the continuous process and first pass yield.
Description
technical field [0001] The invention relates to the field of chemical industry, in particular to a multi-variable dynamic on-line monitoring method and device in a continuous chemical production process. Background technique [0002] In recent years, the complexity of the continuous chemical production process has risen sharply, and the market has more stringent requirements for product quality. Therefore, higher requirements are put forward for the control precision of continuous chemical production process optimization and the first pass rate of products. In general, continuous chemical production equipment is a complex structure composed of multiple elements. Multi-variable problems are often encountered in the process of real-time monitoring and dynamic optimization. Too many variables will undoubtedly increase the difficulty and complexity of analysis problems . If only a single indicator is used to monitor and analyze the continuous production process, the conclusion...
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Login to View More IPC IPC(8): G05B19/418
CPCY02P90/02G05B19/41875
Inventor 苏岳龙孙玉鹏马天明陈强倪华方
Owner BLUESTAR BEIJING TECH CENT