A basis of safety design for cooperative human-machine system

Fundamental safety requirements for cooperative human-machine systems such as symbiosis robots are logically demonstrated in this paper. New protective measure for cooperative system should be proposed based on principle of safety design regulated by current safety standard. Such measure, however, needs to show good reasoning to vindicate its sufficiency for cooperative system. A theoretical analysis formed by algebra of sets is conducted in order to analyze the sufficiency. Safety requirements for the cooperative human-machine system are clarified based on the theoretical analysis.