A Life Cycle Assessment Framework-Based Method for Ergonomic Indicator Selection for Complex Human-Machine Systems

Abstract

To guide the implementation of an ergonomic evaluation in the life cycle of complex human-machine systems, it is necessary to choose suitable indicators for the evaluation. In the present research, we establish an ergonomic indicator evaluation system based on a life cycle assessment framework. Within the structural framework, we propose midpoint and endpoint impact categories for ergonomic evaluation. Taking the evaluation goals as endpoint impact categories, a midpoint impact category groups different indicators into one effect in the evaluation goals. We score the indicators by measuring the relationships between the indicators and the impact categories. Based on the scores of the indicators, the representative ergonomic indicators can be selected. At the end of the manuscript, we use the framework to conduct the selection of ergonomic indicators for a train dispatching command system. This study proposes a structural framework that ensures the validity of the selected indicators.