RESULTS
Fourteen test protocols were
completed during Expedition 1,
and an additional 62 test protocols
were completed during Expedition- Algorithms were developed to
control mechanical systems in real
time using only information from
onboard sensors and actuators to
respond to changes in the system.
These algorithms were able to
adapt whenever they sensed
changes in vibration or the loss of
a sensor or actuator. The system
was able to reduce unwanted
vibrations without human
intervention by a factor of 10 while the system was under control. It was also able to decrease
vibrations by a factor of 6 after adapting to the failure of a primary actuator. While the Air
Force Research Laboratory Science Team successfully completed all of its experiment objectives
associated with the MACE-II unit, the MIT Science Team was unable to do the same because of
data downlink constraints (Ninneman 2003).
PUBLICATION(S)
Ninneman RR, Founds DB, Davis LD, Greeley S, King J. Middeck Active Control Experiment
reflight (MACE II) program: Adventures in space. AIAA Space 2003 Conference and Exposition,
Long Beach, CA; September 23-25, 2003.
Davis LD. conomical and reliable adaptive disturbance cancellation. Air Force Research
Laboratory Technical Report; 2002. [ITAR Restricted]
This investigation is complete and all results are published.
View of Middeck Active Control Experiment-II hardware floating in
the Node 1 Unity module of the International Space Station.