11 papers · 1 filter
Set-based Optimal, Robust, and Resilient Control with Applications to Autonomous Precision Landing
Abhinav G. Kamath, Abraham P. Vinod, Purnanand Elango +2
We present a real-time-capable set-based framework for closed-loop predictive control of autonomous systems using tools from computational geometry, dynamic programming, and convex…
Multi-Vehicle Guidance for Formation Flight on Libration Point Orbits
Yuri Shimane, Purnanand Elango, Avishai Weiss
The multiple spacecraft guidance problem for proximity flight in libration point orbit is considered. A nonlinear optimal control problem with continuous-time path constraints enfo…
Onboard Dual Quaternion Guidance for Rocket Landing
Abhinav G. Kamath, Javier A. Doll, Purnanand Elango +8
The dual quaternion guidance (DQG) algorithm was selected as the candidate 6-DoF powered-descent guidance algorithm for NASA's Safe and Precise Landing -- Integrated Capabilities E…
Successive Convexification for Passively-Safe Spacecraft Rendezvous on Near Rectilinear Halo Orbit
Purnanand Elango, Abraham P. Vinod, Kenji Kitamura +3
We present an optimization-based approach for fuel-efficient spacecraft rendezvous to the Gateway, a space station that will be deployed on a near rectilinear halo orbit (NRHO) aro…
Optimal Preconditioning for Online Quadratic Cone Programming
Abhinav G. Kamath, Purnanand Elango, Behçet AçıkmeÅe
First-order conic optimization solvers are sensitive to problem conditioning and typically perform poorly in the face of ill-conditioned problem data. To mitigate this, we propose…
Deferred-Decision Trajectory Optimization
Purnanand Elango, Selahattin Burak Sarsilmaz, Behcet Acikmese
We present DDTO--deferred-decision trajectory optimization--a framework for trajectory generation with resilience to unmodeled uncertainties and contingencies. The key idea is to e…