TY - JOUR
T1 - Economical quality control policies for a single cause system
AU - Saniga, Erwin M.
AU - Montgomery, Douglas C.
N1 - Funding Information:
h his research was supported in part by a University of Delaware General University Research Grant and by the Office of Naval Research under Contract No. ~00014-78-C-0312N, R047-175.
PY - 1981/9
Y1 - 1981/9
N2 - We consider four types of process control procedures; variables control charts, attributes control charts, a never-inspect policy, and a regular inspection policy consisting of periodic process reset and/or repair. Using a designed experiment, we compare the optimal economic designs associated with these policies for a practical range of costs and other system parameters. We find that the regular inspection policy is economically optimal in many configurations. Moreover, we find that the type of policy that yields minimum cost depends primarily on the expected magnitude of the process shift, the relative cost of variable versus attribute sampling, and the expected search time for an assignable cause. Some general guidelines for the appropriate type of control procedure for use in practice are given.
AB - We consider four types of process control procedures; variables control charts, attributes control charts, a never-inspect policy, and a regular inspection policy consisting of periodic process reset and/or repair. Using a designed experiment, we compare the optimal economic designs associated with these policies for a practical range of costs and other system parameters. We find that the regular inspection policy is economically optimal in many configurations. Moreover, we find that the type of policy that yields minimum cost depends primarily on the expected magnitude of the process shift, the relative cost of variable versus attribute sampling, and the expected search time for an assignable cause. Some general guidelines for the appropriate type of control procedure for use in practice are given.
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U2 - 10.1080/05695558108974559
DO - 10.1080/05695558108974559
M3 - Article
AN - SCOPUS:0019611890
SN - 0569-5554
VL - 13
SP - 258
EP - 264
JO - AIIE Transactions
JF - AIIE Transactions
IS - 3
ER -