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Initial Ares I Bending Filter DesignThe Ares-I launch vehicle represents a challenging flex-body structural environment for control system design. Software filtering of the inertial sensor output will be required to ensure control system stability and adequate performance. This paper presents a design methodology employing numerical optimization to develop the Ares-I bending filters. The filter design methodology was based on a numerical constrained optimization approach to maximize stability margins while meeting performance requirements. The resulting bending filter designs achieved stability by adding lag to the first structural frequency and hence phase stabilizing the first Ares-I flex mode. To minimize rigid body performance impacts, a priority was placed via constraints in the optimization algorithm to minimize bandwidth decrease with the addition of the bending filters. The bending filters provided here have been demonstrated to provide a stable first stage control system in both the frequency domain and the MSFC MAVERIC time domain simulation.
Document ID
20070013790
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Jang, Jiann-Woei
(Draper (Charles Stark) Lab., Inc. Houston, TX, United States)
Bedrossian, Nazareth
(Draper (Charles Stark) Lab., Inc. Houston, TX, United States)
Hall, Robert
(Draper (Charles Stark) Lab., Inc. Huntsville, AL, United States)
Norris, H. Lee
(Draper (Charles Stark) Lab., Inc. Cambridge, MA, United States)
Hall, Charles
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Jackson, Mark
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 23, 2013
Publication Date
February 8, 2007
Subject Category
Launch Vehicles And Launch Operations
Meeting Information
Meeting: 2007 AAS Guidance and Control Conference
Location: Breckenridge, CO
Country: United States
Start Date: February 2, 2007
End Date: February 8, 2007
Sponsors: American Astronomical Society
Distribution Limits
Public
Copyright
Public Use Permitted.
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