A general purpose software research tool designed to facilitate the development and testing of power train health monitoring algorithms.
Healthwatch-2 allows rapid prototyping of advanced vehicle health monitoring concepts and algorithms. It may be reconfigured for real-time use with a broad range of mechanical systems.
Specific research objectives and underlying motivations for developing the HW-2 system are as follows:
Right: OH-58C Helecopter Instrumented with Healthwatch-2 System.
The Healthwatch-2 (HW-2) software system developed at NASA Ames Research Center is designed to support research into power train damage detection algorithms. The system is written in C/C++ and executes on an x86-based computer running the Linux operating system. The HW-2 executive module has interfaces to collect data from various sources, for example, accelerometers, torque meters and tachometers. Some of the special features of HW-2 are:
Healthwatch-2 was installed to monitor the main transmission on an OH-58C Kiowa helicopter in September 2003. Since October 2003, it has been used to collect and process data in-flight. A system is currently being built for an EH-60L Blackhawk helicopter to monitor the main transmission, intermediate and tail rotor gear boxes.
Right: Healthwatch-2 Schematic Diagram.
Recent Technical Papers
Barszcz, E.; Mosher, M.; and Huff, E. M.: Healthwatch-2 System Overview. Presented at American Helicopter Society’s 60th Annual Forum, Baltimore, MD, 2004.
Mosher, M.; Huff, E. M.; and Barszcz, E.: Analysis of In-Flight Measurements from Helicopter Transmissions. Presented at American Helicopter Society’s 60th Annual Forum, Baltimore, MD, 2004.
Tumer, I. Y.; and Huff, E. M.: Analysis of Triaxial Vibration Data for Health Monitoring of Helicopter Gearboxes. ASME Journal of Vibration and Acoustics, vol. 125, pp. 120-128, 2003.
Huff, E. M.; Mosher, M.; and Barszcz, E.: An Exploration of Discontinuous Time Synchronous Averaging Using Helicopter Flight Vibration Data. Presented at the American Helicopter Society’s 59th Annual Forum, Phoenix, AZ, 2003.