Data correction method of chemical engineering procedure based on dual thread module

A data correction and chemical process technology, which is applied in the direction of instruments, adaptive control, control/regulation systems, etc., can solve the problems of amplitude error, and the data correction method of bilinear and trilinear systems is not given.

Inactive Publication Date: 2007-07-25
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Found through literature search to prior art, use more bilinear constrained data correcting method at present or traditional method, Chen et al. -S442) proposed an online optimization method based on the robust estimation method. The robust estimation method constructed using the Lorentzian distribution function is more effective for significant errors with large magnitudes. The disadvantage is that this method does not give bilinear and a data correction method for trilinear systems

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  • Data correction method of chemical engineering procedure based on dual thread module
  • Data correction method of chemical engineering procedure based on dual thread module
  • Data correction method of chemical engineering procedure based on dual thread module

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Embodiment Construction

[0022] An embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to Examples described below.

[0023] Applying the data correction method proposed by the present invention to a certain device in a certain chemical industry process, the purpose is to minimize the deviation between the corrected value of the measured data and the measured value, that is, to be closer to the real value, and to eliminate unbalanced and incomplete process data It has brought difficulties to chemical production activities such as scheduling, accounting, evaluation, scheduling, optimization, and operation.

[0024] As shown in Fig. 1, it is a data correction node flow chart of a certain productio...

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Abstract

A method for calibrating data of chemical industry process based on bilinear model includes calculating and obtaining measurement data of total flow rate and composition content of certain chemical industrial process unit according to relevant chemical balance equation, setting up calibration model of material flow in chemical industrial process unit according to said basic relation and measurement data table, decomposing bilinear problem in calibration operation to be two linear constraints for making derivation be more easier.

Description

technical field [0001] The invention relates to an industrial process control data correction method, in particular to a chemical process data correction method based on a bilinear model, which belongs to the technical field of chemical industry process control. Background technique [0002] Errors are inevitable in the measurement process of chemical process data, and the measured values ​​cannot accurately conform to the chemical reaction measurement relationship, material balance and heat balance of the chemical process. The main purpose of data correction is to improve the accuracy, balance and integrity of measurement data, so as to facilitate the design, simulation and control of the process. In data correction, there is a type of bilinear constraint problem, such as the product of total flow and concentration in the material balance equation, and the product of mass and enthalpy in the heat balance equation. The criterion for correction is: under the condition of sat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 胡明慧王永山黎华高倩邵惠鹤潘兆龙吴胜茜
Owner SHANGHAI JIAO TONG UNIV
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