ORBEX-A

Adaptive control for orbital capture

Adaptive dynamic tube model predictive control for rendezvous with tumbling, noncooperative objects under uncertain dynamics and time-varying safety constraints.

Context
M.S. research · UCLA
Collaboration
With Brett T. Lopez
Areas
Robust control · MPC · Orbital robotics
Conceptual illustration of an orbital rendezvous and adaptive tube control problem
Conceptual orbital-capture illustration from Aaron John Sabu’s portfolio; the publication and public simulation repository are the authoritative technical record.

Problem

Capturing a tumbling, noncooperative object requires a chaser to rendezvous while the target motion and environmental dynamics remain uncertain. A controller must adapt without discarding the safety margins that make the approach robust.

Contribution

The work develops adaptive dynamic tube model predictive control around nonlinear rendezvous optimization, robust tubes, set-membership identification, and target-aware docking constraints.

The public implementation supports single- and multi-chaser missions and reports physical margins, tightened constraints, parameter estimates, target attitude, and inter-chaser spacing.

Outcome

The research was published at the 2025 IEEE Aerospace Conference and is accompanied by a reproducible public simulation codebase.

The evidence is computational: the project does not claim flight or hardware validation.

How to cite this work

Peer-reviewed conference paper · IEEE Aerospace Conference, 2025