Premium
Optimal initial production control period based on a quality growth model
Author(s) -
Tatsumi Yasumichi,
Kimura Mitsuhiro,
Yamada Shigeru
Publication year - 1999
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/(sici)1099-1638(199905/06)15:3<229::aid-qre246>3.0.co;2-2
Subject(s) - production (economics) , quality (philosophy) , control (management) , process (computing) , optimal control , computer science , reliability engineering , production control , phase (matter) , operations management , operations research , manufacturing engineering , engineering , mathematical optimization , mathematics , economics , microeconomics , philosophy , chemistry , organic chemistry , epistemology , artificial intelligence , operating system
The initial production phase of new products or the initial installation phase of new manufacturing facilities isoften unstable because of inexperienced workers and many defective products. An initial production process control, inwhich the defects in design, production technologies and products are fully fixed and removed, is switched to a normalprocess control whenever it is ready for actual mass production. This paper discusses a method of deciding the optimalinitial production control period, based on a quality growth model. It is determined by the number of products with theminimum expected total quality control cost. Finally a penalty cost due to unattainable loss to the quality goal isintroduced in the quality control cost: the realized stabilization level of the initial production process control islower than the original quality objective. Numerical illustrations of the optimal policy are also presented. Copyright© 1999 John Wiley & Sons, Ltd.