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Process abnormal state diagnosing device and abnormal state diagnosing method

A technology of abnormal state and diagnosis device, applied in the direction of length measuring device, manufacturing tool, metal processing equipment, etc., can solve the problems of grasping prediction results, deviation of statistical model prediction accuracy, and high noise.

Active Publication Date: 2020-02-11
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the case of using a statistical model as described in Patent Documents 1 and 2, for a manufacturing process with complex phenomena, it is necessary to comprehensively judge with a plurality of statistical models, but there is a difference in prediction accuracy between the statistical models, Therefore, there is a lot of noise, and it is difficult to grasp the real abnormality based on the prediction results.

Method used

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  • Process abnormal state diagnosing device and abnormal state diagnosing method
  • Process abnormal state diagnosing device and abnormal state diagnosing method
  • Process abnormal state diagnosing device and abnormal state diagnosing method

Examples

Experimental program
Comparison scheme
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no. 1 approach

[0035] Hereinafter, an abnormal state diagnosing device and an abnormal state diagnosing method of the process according to the first embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment. In addition, the constituent elements of the following embodiments include elements that can be easily replaced by those skilled in the art, or elements that are practically the same. In addition, in the following description, "A and / or B" specifically means "A and B" or "A or B".

[0036][Abnormal state diagnosis device]

[0037] Abnormal state diagnosis device 1 is a device for diagnosing abnormal states of various processes such as the manufacturing process of manufacturing equipment such as iron and steel equipment, the power generation process of power generation equipment, and the conveying process of conveying equipment, such as figure 1 As shown, an input unit 10 , an output unit ...

Embodiment

[0085] Hereinafter, the first embodiment of the present invention will be described more specifically with reference to examples. Image 6 is an example of displaying the deviation index for each sub-model obtained from the performance operation by changing the color according to the present invention. The direction of the vertical axis of the graph is the deviation index of each sub-model. In addition, the direction of the abscissa of this figure shows the time change, and the content which represents 1 batch per unit is shown by day. The values ​​on the horizontal axis represent the number of days ago relative to the current day.

[0086] Such as Image 6 As shown, the deviation indicators of submodels 11 to 15 and 20 have continued since about 10 days ago and show a high trend. In addition, the deviation indicators of the sub-models 26, 31, 32 continued from about 20 days ago and showed a high trend. Therefore, by referring to this figure, it can be grasped at a glance ...

no. 2 approach

[0090] Below, refer to Figure 7 ~ Figure 12 The abnormal state diagnosing device and abnormal state diagnosing method of the process according to the second embodiment of the present invention will be described. In addition, in this embodiment, the function as a platform for diagnosing an abnormal state of a process is clarified and concreted compared to the first embodiment described above.

[0091] [Abnormal state diagnosis device]

[0092] Abnormal state diagnosis device 1A is a device for diagnosing the abnormal state of the process based on a pre-specified normal state of the process as a reference, based on a plurality of deviation indicators that index the magnitude of the deviation from the reference, such as Figure 7 As shown, as main structural elements, an input unit 10 , an output unit 20 , an external device 30 , a storage unit 40A, a definition unit 50A, and a control unit 60A are provided. In addition, in the following description, the example which applied ...

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Abstract

An abnormal state diagnosing device 1A diagnoses an abnormal state of a process on the basis of a plurality of deviation indices which index the magnitude of a deviation from a reference, taking a normal state of the process as the reference, wherein the abnormal state diagnosing device is provided with: a color mapping unit 64 which configures a two-dimensional matrix in which a chronological element axis including time serves as a first axis, and items of the deviation indices serve as a second axis, associates data relating to each item of the deviation indices and each chronological element with each cell in the matrix, and assigns a color corresponding to the magnitude of the deviation index to each cell in the matrix; and a color map display unit 65 which displays a color map createdby the color mapping unit.

Description

technical field [0001] The invention relates to an abnormal state diagnosis device and an abnormal state diagnosis method for a manufacturing process and the like. Background technique [0002] As a method of diagnosing an abnormal state of a process such as a manufacturing process, a power generation process, or a transportation process, there are a model-based design method and a data-based design method. The model-based design method is a method of constructing a model that expresses a physical or chemical phenomenon in a process mathematically, and using the constructed model to diagnose an abnormal state of the process. On the other hand, the data-based design method is a method of constructing a model for statistical analysis based on operational data obtained in a process, and diagnosing an abnormal state of the process using the constructed model. [0003] In manufacturing processes such as iron and steel processing, a single manufacturing line manufactures products...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02G06Q10/00B21B38/00
CPCB21B38/00G06Q10/00G05B23/024G05B23/0254G05B23/0272G05B23/02G05B2219/24104G05B23/0281
Inventor 平田丈英
Owner JFE STEEL CORP
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