标准编号：ISO 18391:2016
中文名称：几何产品规范（GPS） 人口规范
英文名称：Geometrical product specifications (GPS) — Population specification
发布日期：2016-10
标准范围
This International Standard defines rules to establish and to indicate population specifications, which are used to specify conditions on population characteristics, which are established from a set of characteristic values obtained one on each workpiece of a population of workpieces.A population specification (as applied to a population of workpieces considered as a collection and not as individual items) can be seen as a complementary requirement to the individual specification (as applied to each workpiece considered as individual items). Population specifications express the statistical hypotheses used on the population of workpieces.NOTE 1 A population specification is a complement to an individual GPS specification.NOTE 2 This International Standard is not intended to mandate a given tolerancing method or how to calculate tolerance values. Its intent is to specify tools to allow the expression of population specifications.
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