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System identification of the JPL micro-precision interferometer truss: an overview

Red-Horse, J.R.; Carne, T.G.; Marek, E.L.; Mayes, R.L.; Neat, G.W.; Sword, L.F.

The JPL Micro-Precision Interferometer (MPI) is a testbed for studying the use of control-structure interaction technology in the design of space-based interferometers. A layered control architecture will be employed to regulate the interferometer optical system to tolerances in the nanometer range. This paper summarizes coordinated test and analysis efforts aimed at producing such a model for the MPI structure. Pretest analysis, modal testing and test-analysis reconciliation results are summarized for a series of tests at both the component and full system levels.