Analysis of relation between operator´s control performance and the skill level

There are many systems to include humans in the mechanical control loops. In such systems, low-skilled operators are considered to cause accidents. To prevent these kinds of accidents, analysis of human´s model with various methods has been studied. “Crossover model” is well known as one of the models to analyze human-machine systems. However, many of those researches have analyzed humans when they used one hand in operating the systems. In this paper, it is considered that humans use both hands in operation, and an analysis approach is proposed to evaluate human dynamic characteristics based on human´s control performance and operation performance in bimanual (two hands) operation. The purpose of this research is to clarify relation between human´s control performance and operation performance. It is also confirmed that analysis based on frequency responses of the crossover model is valid in the bimanual case as same as in the single-hand case. From experimental results of the bimanual operation, the proposed evaluation method successfully works to quantitatively evaluate human´s control performance and operation performance.