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Inspection method and inspection apparatus

An inspection method and measurement technology, applied in the field of inspection, can solve the problems of inability to provide inspection devices and the like

Inactive Publication Date: 2006-09-20
ORMON CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a problem that most of the defective products that become the basis of the sample data used in the construction of the inspection device are not generated because of the implementation of countermeasures, not only that, but also new types of defects are generated, and it is impossible to provide effective inspection device, etc.

Method used

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  • Inspection method and inspection apparatus

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no. 1 approach

[0089] In addition, in this embodiment, the MTS (Maharanobis-Taguchi System) method is used as a parameter-based method. That is, in the MTS method, an ordinary set is set in any meaning, such as a set of good products. Call it unit space. In the judgment of defective products, good products are included in the unit space. Furthermore, if the unit space and observation variables are set, the mean vector and the variance-covariance matrix which are the basis of the Maharanobis distance described below are estimated from only the samples belonging to the unit space.

[0090] Here, the Maharanobis distance is represented by the following formula, and is a scalar value representing a distance taking the mean vector as the origin and taking into account the correlation degree of the variables which is the variance covariance matrix.

[0091] Δ 2 =(x-μ)'Σ -1 (x-μ) (Equation 1)

[0092] (Σ: variance covariance matrix, μ: mean vector)

[0093] In this way, the Maharanobis distan...

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Abstract

The invention relates to a detect device and relative detect method, which can detect according to different worse condition. Wherein, said detect device is used to execute for processing abnormal judgment, based on the mode of normal data from the good product, while it has the function that judge the quality based on variable judgment mode and the function that judge quality based on the non-variable judgment mode; when the sample data is not enough, or the distribution of good product in character space is instable, with not enough estimate accuracy on the shape of normal area, it executes the judgment based on the judge mode of opposite objects, and processes the final judgment according to the result; when the sample data is enough, the distribution of good product, and the shape of normal area are stable, it executes judgment only based on the parameter judge mode.

Description

technical field [0001] The present invention relates to an inspection device and an inspection method, and more specifically, to an inspection device that extracts feature quantities from input measurement data of an inspection object, and judges a state based on the extracted feature quantities, and an inspection performed using the inspection device. method. Background technique [0002] In automobiles, home appliances, etc., rotating equipment incorporating drive components such as motors is widely used. For example, if you take a car as an example, there are rotating equipment installed in the engine, power steering, power seat, transmission and other parts. In addition, among home appliances, there are refrigerators, air conditioners, washing machines, and various other products. Furthermore, when these rotary devices are actually operated, a sound is generated along with the rotation of a motor or the like. [0003] Such sounds include not only the sounds that are i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00G01H17/00G01M99/00
CPCG06K9/6269G06F18/2411
Inventor 糀谷和人清水敦田崎博
Owner ORMON CORP
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