Abstract
In recent years, some unmanned operation systems for the hydraulic excavator are required and some tele-operation systems are already developed. However, it is difficult to realize effective operation utilizing such systems, because the operator cannot sense condition of site. The skillful operator adaptive their operation to the excavating environment based on the experience, and realizing the efficient excavating. In this paper, we described the experiment for extracting operator's skill for controlling unmanned hydraulic excavator. We discussed about relation of excavating resistance and bucket's posture from experimental results. Furthermore, we compared the operation of two skillful operators and tried to extract skill that is not individual but common between skillful operators on the same working environment.
