关键词: 物料约束关系, 制造信息质量, 信息管理, 统计过程控制

Abstract: To estimate quality of enterprise manufacturing information, thus improve management quality, manufacturing information and manufacturing information quality were firstly defined. Information quality was defined as a function of seven information structural elements：thing, time, space, status, origin, medium and expression. Taking thing, time, space and status as key content of manufacturing information quality estimation, material constraint relationship was constructed for a specified space element. By using this material constraint relationship and actual output of a work center, a ratio set of actual input to ideal input corresponding to the actual output was obtained. According to the distribution of the ratio elements, estimation method for manufacturing information quality was put forward on the basis of statistical process control.

Key words: material constraint relationship, manufacturing information quality, information management, statistical process control