Nostra: Power System Condition Monitoring and Prognostics

The NOSTRA system monitors battery health by comparing observed voltage, current, and temperature data to models of both known healthy and known unhealthy battery packs. In Phase I of the NOSTRA program, we demonstrated that this model-based approach can generate accurate estimates of battery age. During Phase II, we will use this approach to estimate battery capacity and internal impedance, the key factors in determining battery health. We will also use a dynamic Bayes network to make inferences about future battery health, allowing users to ensure that a battery will support a given mission. Finally, we will deploy the NOSTRA system on two real robotic systems, the iRobot PackBot 510 and the iRobot Roomba 550, to demonstrate the systems ability to provide commercial value.