Title :
Application of fail-safe multiple-valued logic for control of power press
Author :
Sakai, Masayoshi ; Kato, Masakazu ; Futsuhara, Koichi ; Mukaidono, Masao
Author_Institution :
Nippon Signal Co. Ltd., Saitamaken, Japan
Abstract :
The logical construction of a safety control for the operation of a power press is explicated. Fail-safe dual two-rail system signal processing and fail-safe multivalued logic operations as methods for achieving this control as a fail-safe system are described. A circuit for generating fail-safe two-rail run button signals based on ternary logic for concrete operation of the power press and an operation control circuit for confirming brake performance for each cycle of slide operation by using the run button signals are presented
Keywords :
forming processes; many-valued logics; safety systems; concrete operation; fail-safe multiple-valued logic; logical construction; operation control circuit; power press; safety control; slide operation; ternary logic; two-rail system signal processing; Circuits; Concrete; Control systems; Logic devices; Multivalued logic; Power generation; Safety; Signal generators; Signal processing; Switches;
Conference_Titel :
Multiple-Valued Logic, 1992. Proceedings., Twenty-Second International Symposium on
Conference_Location :
Sendai
Print_ISBN :
0-8186-2680-1
DOI :
10.1109/ISMVL.1992.186792
