TR2020-006

Control Strategy for Long-Term Station-Keeping on Near-Rectilinear Halo Orbits


    •  Muralidharan, V., Weiss, A., Kalabic, U., "Control Strategy for Long-Term Station-Keeping on Near-Rectilinear Halo Orbits", AAS/AIAA Space Flight Mechanics Meeting, DOI: 10.2514/6.2020-1459, January 2020.
      BibTeX TR2020-006 PDF
      • @inproceedings{Muralidharan2020jan,
      • author = {Muralidharan, Vivek and Weiss, Avishai and Kalabic, Uros},
      • title = {Control Strategy for Long-Term Station-Keeping on Near-Rectilinear Halo Orbits},
      • booktitle = {AAS/AIAA Space Flight Mechanics Meeting},
      • year = 2020,
      • month = jan,
      • doi = {10.2514/6.2020-1459},
      • url = {https://www.merl.com/publications/TR2020-006}
      • }
  • MERL Contacts:
  • Research Areas:

    Control, Dynamical Systems, Robotics

This work considers the control of a spacecraft in indefinite near-rectilinear halo orbit about the Earth-Moon L2. For indefinite station-keeping, it is important to minimize fuel consumption, while allowing for occasional transfer to a new orbit. The control scheme therefore consists of two components: the first component is the tracking of the nominal NRHO and the second component is an orbit correction maneuver between NRHO trajectories. The nominal NRHO is computed using a multiple-shooting technique that takes into account all forces on the spacecraft whose magnitude is larger than the dominant disturbance forces caused by navigational error. The tracking component is a linear-quadratic regulation scheme that rejects disturbances caused by orbit determination error, using a Lyapunov sublevel set that models the state covariance generated using sequential Kalman filter. The orbit correction maneuver is computed to minimize fuel costs.