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A fault detection method for fused magnesia furnace operation based on common subspace separation

A technology of an electric fused magnesia furnace and a detection method, applied in the directions of electrical program control, comprehensive factory control, comprehensive factory control, etc., can solve the problems of difficulty in determining a new sampling operation mode, large operation volume, and ignoring the similarity of modes.

Active Publication Date: 2016-08-17
NORTHEASTERN UNIV LIAONING
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  • Abstract
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Problems solved by technology

But since the similarity between modes is ignored, it is difficult to determine which mode of operation the new sample is in
In addition, this method has a large amount of operation during modeling and mode switching

Method used

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  • A fault detection method for fused magnesia furnace operation based on common subspace separation
  • A fault detection method for fused magnesia furnace operation based on common subspace separation
  • A fault detection method for fused magnesia furnace operation based on common subspace separation

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Embodiment Construction

[0065] An embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0066] The invention divides the operation of the fused magnesia furnace into multi-modes according to the change of the feeding material of the fused magnesia furnace, that is, the difference of the operation modes is reflected in the production raw materials. Due to the needs of the production process, the production raw materials will be adjusted. Under different production materials, the normal production current, voltage and electrode position are also different, but they all operate in a stable state.

[0067] In the present embodiment, there are two kinds of operation modes in the operation process of the fused magnesia furnace, and the operation modes of the fused magnesia furnace when the production raw materials are magnesite block and magnesite powder are respectively represented below with mode A and mode B; The process data and quality ...

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Abstract

The invention discloses a method for detecting operation faults of an electro-fused magnesia furnace based on public subspace separation. According to the method, correlation processing is performed on a process variable and a quality variable which are obtained during operation of the electro-fused magnesia furnace by means of kernel partial least squares regression, extraction of public subspace is performed by means of processed quality correlative process data through a local tangent space alignment algorithm, original data space is further divided into quality correlative public subspace and quality correlative special subspace, and a corresponding kernel principal component analysis monitoring model is established. By means of combined monitoring of the quality correlative public subspace shared by a plurality of operation modes of the electro-fused magnesia furnace and the quality correlative special subspace of each operation mode, the false alarm rate of faults is reduced when the operation modes are switched, and sensitivity of fault detection is increased.

Description

technical field [0001] The invention belongs to the technical field of fault detection and diagnosis, and in particular relates to a method for detecting faults in the operation of an electric fused magnesium furnace based on common subspace separation. Background technique [0002] Fused magnesium furnace belongs to submerged arc furnace equipment, such as figure 1 As shown, it mainly includes three parts: the main body of the fused magnesium furnace, the main circuit equipment and the control equipment. Among them, the body of the fused magnesium furnace is mainly composed of a furnace body, an electrode holder, and an electrode lifting mechanism. The furnace body is composed of a furnace shell and a furnace bottom steel plate. The furnace shell is generally round and slightly tapered. In order to facilitate the shelling of the smelt, a lifting ring is welded on the wall of the furnace shell. The electrode holder is capable of clamping the electrode to facilitate the tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 张颖伟张传放樊云鹏
Owner NORTHEASTERN UNIV LIAONING
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