质量控制中完全检验的一种最优设计

本文提出质量控制中完全检验的一种最优设计。所谓完全检验 ,也就是 1 0 0 %检验 ,是指生产出来的每一个产品都要经过检验。生产过程中有两种生产状态 :控制状态和失控状态。当一个产品的质量特征值超过预定的控制界限 ,就立即对生产过程进行检查 ,一旦发现生产失控 ,马上采取调整措施使生产恢复正常。检验后的产品按其质量特征值接受或者重新制作。根据本文所建立的质量成本模型 ,我们可以得到最优的产品质量的规格界限和控制界限 ,对实际企业的生产有积极的指导作用。

Economic design of control chart in complete inspection

In this paper a new economic design of control chart in complete inspection is presented.Two process states,in-control and out-of-control,are assumed.When the quality characteristic of a product exceeds a predetermined action limit,a reactive action is taken for searching the assignable causes.If an out-of control state is found,a rectifying action is taken to restore the process to the in-control state.Inspected items are either accepted with quality cost or reworked according to the observed quality characteristic.Specification limits and action limits for monitoring the observed quality characteristic.Specification limits and action limits for monitoring the process are derived from the proposed model.