再起動防止制御の論理構成とその安全作業システムへの適用

概要

論文の詳細を見る
Operation control based on the idea of antirepeat used in a system where the human operator and machine work in the same space is defined as antirepeat control. This study uses multiple-valued logic to evaluate the idea of antirepeat and clarifies the logic structure of antirepeat control. Antirepeat control is expressed by such an interlock that safety resulting from the action of the operator is taken as a signal to permit the movable part of the machine to operate. Two methods are available to assure safety in antirepeat control. One method allows the movable part of the machine to operate based on the proof that the operator has returned from the hazardous space to a safety place. The other allows the movable part of the machine to operate based on the proof that the operator is not present in the hazardous space. These two methods constitute different systems from a safety control point of view and are represented here by concrete operation control circuits. The control circuits proposed here have fail-safe output property.
社団法人電気学会の論文