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PLATSIM: A Simulation and Analysis Package for Large-Order Flexible SystemsThe software package PLATSIM provides efficient time and frequency domain analysis of large-order generic space platforms. PLATSIM can perform open-loop analysis or closed-loop analysis with linear or nonlinear control system models. PLATSIM exploits the particular form of sparsity of the plant matrices for very efficient linear and nonlinear time domain analysis, as well as frequency domain analysis. A new, original algorithm for the efficient computation of open-loop and closed-loop frequency response functions for large-order systems has been developed and is implemented within the package. Furthermore, a novel and efficient jitter analysis routine which determines jitter and stability values from time simulations in a very efficient manner has been developed and is incorporated in the PLATSIM package. In the time domain analysis, PLATSIM simulates the response of the space platform to disturbances and calculates the jitter and stability values from the response time histories. In the frequency domain analysis, PLATSIM calculates frequency response function matrices and provides the corresponding Bode plots. The PLATSIM software package is written in MATLAB script language. A graphical user interface is developed in the package to provide convenient access to its various features.
Document ID
19980017485
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Maghami, Peiman G. (NASA Langley Research Center Hampton, VA United States)
Kenny, Sean P. (NASA Langley Research Center Hampton, VA United States)
Giesy, Daniel P. (NASA Langley Research Center Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1997
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NASA-TM-4790
NAS 1.15:4790
L-17608
Funding Number(s)
PROJECT: RTOP 233-10-14-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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