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Hierarchy of Human Operator Models for Digital Twin

The effectiveness of the functioning of the cyber-physical system is largely determined by the correctness of the model representation of the components of the production structure, including the human operator. Since the human operator's activity is characterized by high psycho-emotional stress, it can have a negative impact on the quality of the tasks to be solved. Therefore, constant monitoring of the functional state of people controlling complex devices, equipment and complexes is necessary. The article describes an approach to building an adequate model of a human operator, which is used to assess its functional state. It is based on the concept of a hierarchical representation of a virtual model of a complex system and a synergistic method of basic models. The results of psychological testing were used to estimate the parameters of the digital twin model of the upper level. At the lower level, the problem of identifying and building the cardiovascular system model is solved using synchronous biosignals (an electrocardiogram and a photoplethysmogram).