Optimization and Dynamics #2
- Stijn Lemmens (European Space Agency)
- Ruaraidh Mackenzie (ESOC)
- Christina Jetzschmann (Airbus DS Bremen)
Online optimization and trajectory planning are key aspects of autonomous deep space missions. Taking into account individual target criteria, such as time or energy optimality, any spacecraft maneuver can be traced back to a general problem definition of the form "move the spacecraft from its initial state to a desired final state, while considering a dynamic model and avoiding collisions"....
SQP methods for nonlinear programming rely on a quadratic programming solver for computing a search direction in each major iteration. From the start, the large scale NLP solver WORHP has been using the interior point method QPSOL within its SQP framework, which was developed specifically for WORHP. Experience from usage of WORHP in many areas and development of features like sensitivity...
MODHOC (Multi Objective Direct Hybrid Optimal Control) is a toolbox for the design, optimisation and trade off study of space systems and missions.
It solves general nonlinear multi phase optimal control problems, automatically computing a well spread set of optimal trade off solutions. In addition, it is able to handle discrete optimisation parameters.
In order to do so, MODHOC combines a...