文档介绍：Statistical Process Control: Process and Quality Views Page 1
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SG Statistical Process Control (SPC) provides a way to monitor
Date Time
Search Site Result chemical and other processes. We'll focus on continuous
2/ chemical processes and how the process and quality control
25 / 0300 departments utilize SPC. Process control engineers use SPC to
99 monitor a process's stability, consistency and overall
0900 performance. Quality control engineers use SPC to see if the
1500 process is functioning within quality standards. In industry,
these two departments work together to monitor a chemical
2100 process. SPC, in a classical sense, will not reveal much about
2/ the quality of the product. For example, a process may be
26 / 0300 operating very well and in a very stable manner...as far as the
99 process engineer is concerned, everything is fine. However, if
0900 the process is currently 20% below the quality standard for A
1500 or top grade material, it would be difficult to say that the
2100 process is fine.
To help introduce the basics of SPC, we'll assume that the
2/
variable being monitored is the specific gravity