Research Summaries

Back CMG Duty-Cycle Optimization

Fiscal Year 2016
Division Graduate School of Engineering & Applied Science
Department Mechanical & Aerospace Engineering
Investigator(s) Karpenko, Mark
Sponsor Department of Defense Space (DoD)
Summary Recent discoveries at the Naval Postgraduate School have revealed that many satellite attitude controls have physical capabilities that go un-tapped due to simplifications made in heritage algorithms. Because of this, the status quo for increasing the performance of CMG spacecraft is to use larger CMGs. The objective of this project is to develop new concepts for reducing the SWaP and extending the life expectancy of CMG systems while maintaining requirements on agility. The proposed approach will use new nonlinear control algorithms to access and manage the “hidden” torque capability of a CMG system in order to reduce the overall stress on the CMG array. The idea is based on the insight that heritage algorithms force a CMG array to work harder than necessary to slew the vehicle. Reducing the CMG duty-cycle by using the newly developed concepts will improve the torque efficiency and therefore enhance the life expectancy of CMGs. The results of this project will have a profound effect on future systems.
Keywords Control and Optimization
Publications Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal