The model of response design is based on the SPC ... model.
The goal of response design is to determine the grace time.
The grace time is the time between the alerting time and the critical time. In this time frame, it is the operator's turn to respond to the alert
The critical time is the time after which the operator may not be able to solve the problem. In the time after the critical time, the system is under threat. It is the machine's turn to mitigate the risks of the threat.
Updated on 10 Dec 2016.