过程控制中测量系统误差的性能影响分析

Property influence analysis of measurement system error in process control

从控制图的建立和监控两个不同阶段的角度分别讨论了测量系统误差对过程质量控制监控性能的影响。以平均运行长度作为过程控制性能评价的指标,分析了两种不同类型的测量误差对监控性能的干扰模式。最后通过一个算例分析测量系统误差的危害性,表明一个好的测量系统在过程监控中的重要性。

Start from the angle of two different stages of the establishment of controlling graph and monitory control the influence on the monitory control property of processes quality control affected by the measuring systematic error was separately discussed. Take the average operational length as the property evaluation target of processes control, the disturbance mode on the monitory control affected by two kinds of different typed measuring error was analyzed. Finally by means of a computational example the harmfulness of the measuring systematic error was analyzed and the importance of a good measuring system in the process of monitory control was indicated.