发明名称 |
Pass/fail judgment device, pass/fail judgment program, pass/fail judgment method, and multivariate statistics analyzer |
摘要 |
If a threshold discrimination is performed with variable Z=0 using discriminant analysis, that is useless unless know-how is accumulated through visual judgment and actual operation. A discriminant function is computed using a plurality of parameters which make pass/fail judgment factors and the results of that pass/fail judgment. With respect to the discriminant function, a histogram is generated for pass category and for fail category. Then, a threshold is determined based on the standard deviation in the individual categories so that an intended rate of flowout and rate of overcontrol will be obtained. The acceptability of pass/fail judgment objects is judged based on the threshold. Thus, the rate of flowout and the rate of overcontrol can be controlled as intended. Further, high-performance pass/fail judgment can be implemented without accumulating know-how.
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申请公布号 |
US7610168(B2) |
申请公布日期 |
2009.10.27 |
申请号 |
US20030646942 |
申请日期 |
2003.08.21 |
申请人 |
TOYOTA JIDOSHA KABSUHKI KAISHA;NAGOYA ELECTRIC WORKS CO. LTD. |
发明人 |
ISUMI YASUO;HIRANO KOU |
分类号 |
G01N21/956;G06F17/18;G01N21/88;G06T7/00;H01L21/66;H05K3/34;H05K13/08 |
主分类号 |
G01N21/956 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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