Dynamics and control of multipayload platforms: The Middeck Active Control Experiment (MACE)

摘要

The objective is to develop a well verified set of controlled structures technology tools that will allow designers to either be able to predict on-orbit behavior or allow sufficient versatility in the design to allow identification and tuning of the structure on-orbit. Since the model fidelity required for stability and performance robustness is intimately related to the level of control authority, closed-loop testing is required. Vehicle qualification testing will most likely occur on the ground where suspension and direct gravity effects will cause the 1-g and 0-g dynamics to differ. While all known influences cause regular perturbations, even small perturbations can substantially alter closed-loop behavior. Differences between the ground and on-orbit environment cause perturbations which can substantially alter closed-loop behavior. Therefore, it is essential to perform on-orbit closed-loop testing for comparison with ground testing and analytical predictions to develop these CST tools.