Abstract
Acceptance sampling plan is a practical quality tool which evaluates only parts of products and then decides whether to accept or not on the submitted lot. Quick switching sampling (QSS) system is combined with two variables single sampling plans under normal inspection and tightened inspection. In order to provide numerical measures on process performance, several process capability indices (PCIs) have been applied. Taguchi capability index is developed by incorporating the Taguchi loss function, and takes the process targeting and process variability into consideration simultaneously. This research develops a variables QSS system of three types based on Taguchi capability index. To determine the parameters of three types of system, the problems are formulated as optimization programming. The objective function is to minimize the average sample number (ASN), and the constraints functions are set to fulfill two-point conditions on the operating characteristic (OC) curve. The performance of proposed system is discussed and compared with single sampling plan. Lastly, an application example is illustrated.