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Abstract: On
the foundation of automatic identifying the feature, a kind of
hierarchical tolerance representation model based on feature is proposed
by using polychromatic sets the rock-bottom frame of this hierarchical
tolerance representation model is described by using polychromatic sets.
Then, using the reasoning matrix between the unified colors and
individual colors of polychromatic sets the reasoning of the constraint
primitive (CP) tier is achieved, and the method and process of the
reasoning are proposed. Finally, take the feature of hole as example,
the methods and process of the reasoning discussed are validated.
Key words: Tolerance information Rock-bottom frame Polychromatic
sets Constraint primitive tier
CLC No: TH161
国家自然科学基金资助项目(59885005). Received 20041007,
received in revised form
20050220
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