Efficient Evaluation of Control Software for Machining Cell Production System

Abstract

Software for a continuous machining production system with machining centers was debugged by the use of L36 orthogonal arrays, based on the probability matching method. A combination of five orthogonal arrays was used, roughly classified into operating conditions, detailed settings, and uncertain factors. With conventional verificatien methods, it took several weeks to find ordinaly bugs; with the new method, verification was completed in two days. Since then,no bugs have been found in the delivered software for several years except for one, which was purely external. Introduction of the new method has improved software reliability and has been economically effective as well.