Title :
Trade-off between safety and normal-case control performance based on probabilistic safety management of control laws
Author_Institution :
Tokyo Univ. of Marine Sci. & Technol., Tokyo, Japan
Abstract :
This paper presents a probabilistic safety management framework for control laws to provide a balance between normal-case performance, safety and fault-case performance according to the international standard on safety, IEC 61508. It is based on multiobjective design for simultaneous problems for each context to optimize only normal-case performance out of the whole including fault-case performance. Also the framework establishes the existence of trade-off between them quantitatively for the first time ever.
Keywords :
control engineering computing; probability; safety; software engineering; IEC 61508; control laws; international standard on safety; multiobjective design; probabilistic safety management; social environment surrounding system safety; software design; software management; software quantitative safety assessment; Context; Control systems; Frequency control; IEC standards; Probabilistic logic; Risk management; Safety;
Conference_Titel :
Control Conference (ECC), 2009 European
Conference_Location :
Budapest
Print_ISBN :
978-3-9524173-9-3
