It has been pointed out that the semiconductor industry of Japan is lagging behind the new industrial countries in respect to the production efficiency, as the multi-product, varying volume production system based on the cutting-edge processes advances.

A highly efficient production control method is developed to keep stabilized production despite production variability caused by accidental failures, while reducing the inventory volume of half-finished semiconductor line products, through the optimization technology based on ultra-fast simulation and the distributed production control scheme.

The study will contribute to improving the performance and expanding the market share of the Japanese semiconductor industry, which has been seriously challenged with respect to the production cost in the international competitive market.