Spacecraft flight control with the new phase space control law and optimal linear jet selectAn autopilot designed for rotation and translation control of a rigid spacecraft is described. The autopilot uses reaction control jets as control effectors and incorporates a six-dimensional phase space control law as well as a linear programming algorithm for jet selection. The interaction of the control law and jet selection was investigated and a recommended configuration proposed. By means of a simulation procedure the new autopilot was compared with an existing system and was found to be superior in terms of core memory, central processing unit time, firings, and propellant consumption. But it is thought that the cycle time required to perform the jet selection computations might render the new autopilot unsuitable for existing flight computer applications, without modifications. The new autopilot is capable of maintaining attitude control in the presence of a large number of jet failures.
Document ID
19770059929
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Bergmann, E. V. (Draper (Charles Stark) Lab., Inc. Cambridge, MA, United States)
Croopnick, S. R. (Draper (Charles Stark) Lab., Inc. Cambridge, MA, United States)
Turkovich, J. J. (Draper (Charles Stark) Lab., Inc. Cambridge, MA, United States)
Work, C. C. (Charles Stark Draper Laboratory, Inc. Cambridge, Mass., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking