Previous Projects
  • Spacecraft Global Attitude Control.

    Joint work with Prof. Kenneth D. Mease and Sanjay Bharadwaj, University of California, Irvine

    The problem of globally stabilizing the attitude of a rigid body was considered. Topological and geometric properties of the space of rotations relevant to the stabilization problem were investigated. A control Lyapunov function approach was used to design globally stabilizing feedback laws that have desirable optimality properties. Their performance was compared to the performance of previously developed proportional-derivative and feedback linearizing control laws and shown to be superior.


  • X-34 Entry Guidance.

    Joint work with Prof. Kenneth D. Mease, University of California, Irvine

    The entry corridor was computed for X-34 aerodynamic model. For the reduced order model of the X-34 vehicle 3D predictive guidance/trajectory planner was generated as a solution of optimal control problem with constraints.


  • Ejection Seat Flight Optimizer.

    Joint work with Prof. Kenneth D. Mease, University of California, Irvine

    The ejection seat/pilot system was modeled as a six-degree of freedom rigid body. For the model predictive guidance the set of feasible trajectories was generated as a solution of the optimal control problem with constraints on control input and state variables imposed by safe crew escape requirements.


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