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在生产过程中除去对逐日、逐批的产品质量进行控制与管理以外,还要求对一个工作周期或整个批量的总产品质量进行控制与管理,这就需要应用累积图。 累积图分为累积控制图与累积选控图。前者控制与管理总产品质量或总服务质量,而后者则控制与管理总工序产品质量或总岗位服务质量,也即总工作质量。 本文全面论述了累积控制图并提出累积选控图理论。 文中实例证实本文所提出的理论与实践一致。
In addition to controlling and managing day-by-day, batch-by-batch product quality during production, it also requires the control and management of total product quality over a work cycle or entire batch, which requires the use of a cumulative plot. Cumulative chart is divided into cumulative control chart and cumulative control chart. The former controls and manages the total product quality or total service quality, while the latter controls and manages the total process product quality or total post service quality, ie the overall quality of work. This paper comprehensively discusses the cumulative control chart and proposes the cumulative control chart theory. The examples in this paper confirm that the theory and practice proposed in this paper are consistent.