LTLで記述されるマニュアルに対するオートメーションサプライズの検出

抄録

In a human-machine system, an interface displays an abstracted state of the machine. The abstracted state may differ from that anticipated by a user. Such a phenomenon is called an automation surprise and may cause a serious human error. In this paper, we assume that the user operates the machine according to a manual which is modeled by LTL (Linear-Time Temporal Logic). We propose a formal method for detection of three automation surprises and livelocks due to the manual. First, we transform the LTL representation of the manual into a transition system. Next, we propose a composite model derived from the transition system and a machine model, which describes concurrent behavior of the machine and the user. Finally, solving a reachability problem and searching strongly-connected components for the composite model, both the automation surprises and live lock can be detected formally.